Clark County is the southernmost

county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...

. As of the 2020 census, the population was 503,311, making it Washington's fifth-most populous county. Its

county seat A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US st ...

and largest city is

Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the ...

. It was the first county in Washington, named after

William Clark William Clark (August 1, 1770 – September 1, 1838) was an American explorer, soldier, Indian agent, and territorial governor. A native of Virginia, he grew up in pre-statehood Kentucky before later settling in what became the state of Misso ...

of the

Lewis and Clark Expedition The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select gro ...

. It was created by the provisional government of

Oregon Territory The Territory of Oregon was an organized incorporated territory of the United States that existed from August 14, 1848, until February 14, 1859, when the southwestern portion of the territory was admitted to the Union as the State of Oregon. Ori ...

on August 20, 1845, and at that time covered the entire present-day state. Clark County is the third-most-populous county in the

Portland Portland most commonly refers to: * Portland, Oregon, the largest city in the state of Oregon, in the Pacific Northwest region of the United States * Portland, Maine, the largest city in the state of Maine, in the New England region of the northeas ...

-Vancouver- Hillsboro, OR-WA

Metropolitan Statistical Area In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally Incorporated town, incorporate ...

, and is across the

Columbia River The Columbia River (Upper Chinook: ' or '; Sahaptin: ''Nch’i-Wàna'' or ''Nchi wana''; Sinixt dialect'' '') is the largest river in the Pacific Northwest region of North America. The river rises in the Rocky Mountains of British Columbia, C ...

from Portland.

History

Clark County began as the ''District of Vancouver'' on July 27, 1844. It included all the land north of the Columbia River, west of the

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico in ...

, and south of

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

. In 1845 the provisional government changed its name to Vancouver County. At that time it stretched from the Columbia River to 54 degrees 40 minutes North Latitude in what is now

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

. On June 15, 1846, the United States Senate approved the present boundary between the U.S. and Canada at the 49th Parallel. On August 13, 1848, President

James K. Polk James Knox Polk (November 2, 1795 – June 15, 1849) was the 11th president of the United States, serving from 1845 to 1849. He previously was the 13th speaker of the House of Representatives (1835–1839) and ninth governor of Tennessee (183 ...

signed an act creating the entire region as the Oregon Territory. On September 3, 1849, the Oregon Territorial Legislature modified the borders again and changed its name to Clarke County in honor of explorer William Clark. At this time it included all of present-day Washington and continued to be divided and subdivided until reaching its present area in 1880. It was not until 1925 that the spelling was corrected to its present form. In September 1902 the

Yacolt Burn The Yacolt Burn is the collective name for dozens of fires in Washington state and Oregon occurring between September 8 and September 12, 1902, causing 38 deaths in the Lewis River area, at least nine deaths by fire in Wind River and 18 deaths in ...

, the largest fire in state history, began in neighboring

Skamania County Skamania County () is a county located in the U.S. state of Washington. As of the 2020 census, the population was 12,036. The county seat and largest incorporated city is Stevenson, although the Carson River Valley CDP is more populous. The ...

and swept west along a 12-mile front to Yacolt, nearly engulfing the town. Salvaging the remaining timber was a lucrative industry for a time.

Geography

According to the

United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...

, the county has a total area of , of which is land and (4.1%) is water. It is the fifth-smallest county in Washington by land area. Clark County is surrounded on two sides by the Columbia River and on the north by the North Fork of the Lewis River. The East Fork of the Lewis River and the

Washougal River The Washougal River is a tributary of the Columbia River in the U.S. state of Washington. Its headwaters and upper are in Skamania County in the Gifford Pinchot National Forest, and its lower are in Clark County. The river, which meets the C ...

cut across the county. The largest stream arising solely within the county is Salmon Creek, which terminates at

Vancouver Lake Vancouver Lake is located just west of Vancouver, Washington, United States, north of the Columbia River and Portland, Oregon, south of Ridgefield, Washington, and the Ridgefield National Wildlife Refuge. The lake is shallow, with a maximum depth ...

before eventually flowing into the Columbia River. Like most of Oregon and Washington south of

Puget Sound Puget Sound ( ) is a sound of the Pacific Northwest, an inlet of the Pacific Ocean, and part of the Salish Sea. It is located along the northwestern coast of the U.S. state of Washington. It is a complex estuarine system of interconnected ma ...

into the

Willamette Valley The Willamette Valley ( ) is a long valley in Oregon, in the Pacific Northwest region of the United States. The Willamette River flows the entire length of the valley and is surrounded by mountains on three sides: the Cascade Range to the east, ...

the landscape and climate of Clark County are determined by its placement between the

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

Pacific Coast Pacific coast may be used to reference any coastline that borders the Pacific Ocean. Geography Americas Countries on the western side of the Americas have a Pacific coast as their western or southwestern border, except for Panama, where the Pac ...

and

Cascade Range The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, ...

s, where

glaciation A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate betw ...

helped form a U-shaped valley which meets the river valley of the Columbia River as it leaves the

Columbia River Gorge The Columbia River Gorge is a canyon of the Columbia River in the Pacific Northwest of the United States. Up to deep, the canyon stretches for over as the river winds westward through the Cascade Range, forming the boundary between the sta ...

. Volcanic andisol soils are common, with fertile

mollisols Mollisol is a soil type which has deep, high organic matter, nutrient-enriched surface soil (a horizon), typically between 60 and 80 cm in depth. This fertile surface horizon, called a mollic epipedon, is the defining diagnostic feature of M ...

in the lower areas. The central and southwest areas of the county are generally flat floodplains, sculpted by torrents of prehistoric

Lake Missoula Lake Missoula was a prehistoric proglacial lake in western Montana that existed periodically at the end of the last ice age between 15,000 and 13,000 years ago. The lake measured about and contained about of water, half the volume of Lake Mic ...

. A series of dramatic floods known as the

Missoula Floods The Missoula floods (also known as the Spokane floods or the Bretz floods or Bretz's floods) were cataclysmic glacial lake outburst floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the last ...

took place 15,000–13,000 years ago, as several ice dams melted, forming a series of low steps such as the "Heights", "Mill Plain", "Fourth Plain" and "Fifth Plain". Clark County's

Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...

is "Csb". Many lakes border the river in the lowlands near Ridgefield, including Vancouver Lake. Eastern and northern Clark County contain forested foothills of the

Cascade Mountains The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, ...

, rising to an elevation of on the border with Skamania County. Larch Mountain is the county's highest free-standing peak. Flora and fauna of the region include the normal

ecological succession Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire) or more or less. Bacteria allows for the cycling of nutrients such as ca ...

from lowland

big leaf maple ''Acer macrophyllum'', the bigleaf maple or Oregon maple, is a large deciduous tree in the genus '' Acer''. It is native to western North America, mostly near the Pacific coast, from southernmost Alaska to southern California. Some stands are al ...

and

western red cedar ''Thuja plicata'' is an evergreen coniferous tree in the cypress family Cupressaceae, native to western North America. Its common name is western redcedar (western red cedar in the UK), and it is also called Pacific redcedar, giant arborvitae ...

through

Garry oak ''Quercus garryana'' is an oak tree species of the Pacific Northwest, with a range stretching from southern California to southwestern British Columbia. It is commonly known as the Oregon white oak or Oregon oak or, in Canada, the Garry oak. It ...

on up through fire-dependent species such as

lodgepole pine ''Pinus contorta'', with the common names lodgepole pine and shore pine, and also known as twisted pine, and contorta pine, is a common tree in western North America. It is common near the ocean shore and in dry montane forests to the subalpine, ...

and

Douglas fir The Douglas fir (''Pseudotsuga menziesii'') is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three va ...

, as well as

grand fir ''Abies grandis'' (grand fir, giant fir, lowland white fir, great silver fir, western white fir, Vancouver fir, or Oregon fir) is a fir native to the Pacific Northwest and Northern California of North America, occurring at altitudes of sea leve ...

silver fir Silver fir is a common name for several trees and may refer to: *''Abies alba ''Abies alba'', the European silver fir or silver fir, is a fir native to the mountains of Europe, from the Pyrenees north to Normandy, east to the Alps and the Car ...

and other species common to

Gifford Pinchot National Forest Gifford Pinchot National Forest is a National Forest located in southern Washington, managed by the United States Forest Service. With an area of 1.32 million acres (5300 km2), it extends 116 km along the western slopes of Cascade Ran ...

. In addition to a wide variety of birds including

great blue heron The great blue heron (''Ardea herodias'') is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North America and Central America, as well as the Caribbean and the Galápagos ...

, raptors such as

barred owl The barred owl (''Strix varia''), also known as the northern barred owl, striped owl or, more informally, hoot owl, is a North American large species of owl. A member of the true owl family, Strigidae, they belong to the genus '' Strix'', whic ...

osprey The osprey (''Pandion haliaetus''), , also called sea hawk, river hawk, and fish hawk, is a diurnal, fish-eating bird of prey with a cosmopolitan range. It is a large raptor reaching more than in length and across the wings. It is brown o ...

red-tailed hawk The red-tailed hawk (''Buteo jamaicensis'') is a bird of prey that breeds throughout most of North America, from the interior of Alaska and northern Canada to as far south as Panama and the West Indies. It is one of the most common members with ...

and

bald eagle The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche as ...

corvid Corvidae is a Cosmopolitan distribution, cosmopolitan family (biology), family of oscine passerine birds that contains the crows, ravens, rook (bird), rooks, jackdaws, jays, magpies, treepies, choughs, and nutcracker (bird), nutcrackers. In coll ...

s (

raven A raven is any of several larger-bodied bird species of the genus ''Corvus''. These species do not form a single taxonomic group within the genus. There is no consistent distinction between "crows" and "ravens", common names which are assigned t ...

crow A crow is a bird of the genus ''Corvus'', or more broadly a synonym for all of ''Corvus''. Crows are generally black in colour. The word "crow" is used as part of the common name of many species. The related term "raven" is not pinned scientifical ...

, California scrub and Steller's jay) and others, the native streams are home to various species of

salmon Salmon () is the common name for several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the family (biology), family Salmonidae, which are native to tributary, tributaries of the ...

and the Vancouver Trout Hatchery. Larger mammals include

black-tailed deer Two forms of black-tailed deer or blacktail deer that occupy coastal woodlands in the Pacific Northwest of North America are subspecies of the mule deer (''Odocoileus hemionus''). They have sometimes been treated as a species, but virtually all r ...

coyote The coyote (''Canis latrans'') is a species of canis, canine native to North America. It is smaller than its close relative, the wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecologica ...

raccoon The raccoon ( or , ''Procyon lotor''), sometimes called the common raccoon to distinguish it from other species, is a mammal native to North America. It is the largest of the procyonid family, having a body length of , and a body weight of ...

skunk Skunks are mammals in the family Mephitidae. They are known for their ability to spray a liquid with a strong, unpleasant scent from their anal glands. Different species of skunk vary in appearance from black-and-white to brown, cream or ginge ...

and invasive

opossum Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 93 species in 18 genera. Opossums originated in South America and entered North ...

; with sightings of lynx, bobcat, black bear, cougar and elk not uncommon, especially in the northern parts of the county. Common foods used by the

indigenous people Indigenous peoples are culturally distinct ethnic groups whose members are directly descended from the earliest known inhabitants of a particular geographic region and, to some extent, maintain the language and culture of those original people ...

such as the

Klickitat tribe The Klickitat (also spelled Klikitat) are a Native Americans in the United States, Native American tribe of the Pacific Northwest. Today most Klickitat are enrolled in the Federally recognized tribe, federally recognized Confederated Tribes and B ...

and Chinook included salmon,

huckleberry Huckleberry is a name used in North America for several plants in the family Ericaceae, in two closely related genera: ''Vaccinium'' and ''Gaylussacia''. The huckleberry is the state fruit of Idaho. Nomenclature The name 'huckleberry' is a Nort ...

and ''

Camassia quamash ''Camassia quamash'', commonly known as camas, small camas, common camas, common camash or quamash, is a perennial herb. It is native to western North America in large areas of southern Canada and the northwestern United States. Description ...

'' (after which the city of Camas, Washington is named).

Mount Hood Mount Hood is a potentially active stratovolcano in the Cascade Volcanic Arc. It was formed by a subduction zone on the Pacific coast and rests in the Pacific Northwest region of the United States. It is located about east-southeast of Portlan ...

Mount St. Helens Mount St. Helens (known as Lawetlat'la to the indigenous Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United St ...

and Mount Adams are all visible from Clark County, and cold winter winds through the Columbia River Gorge often bring

freezing rain Freezing rain is rain maintained at temperatures below freezing by the ambient air mass that causes freezing on contact with surfaces. Unlike a mixture of rain and snow or ice pellets, freezing rain is made entirely of liquid droplets. The rain ...

and a coating of

glaze ice Glaze or glaze ice, also called glazed frost, is a smooth, transparent and homogeneous ice coating occurring when freezing rain or drizzle hits a surface. It is similar in appearance to clear ice, which forms from supercooled water droplets. It ...

clear ice Clear ice refers to a solid precipitation which forms when air temperature is between and and there are supercooled, relatively large drops of water (from freezing fog). A rapid accretion and a slow dissipation of latent heat of fusion favor the ...

known locally as a "silver thaw," especially in southeastern areas of the county closest to the gorge. The counterpart to this are warm winds from the southwest known locally as the "

Pineapple Express Pineapple Express is a non-technical term for a meteorological phenomenon characterized by a strong and persistent large-scale flow of warm moist air, and the associated heavy precipitation both in the waters immediately northeast of the Hawaii ...

Climate

Spring thaws can often swell county waterways, with two of the more destructive floods being those of the Columbia River in June 1894 and May, 1948. The 1948

Memorial Day Memorial Day (originally known as Decoration Day) is a federal holiday in the United States for mourning the U.S. military personnel who have fought and died while serving in the United States armed forces. It is observed on the last Monda ...

flood almost topped the Interstate Bridge's support

pier image:Brighton Pier, Brighton, East Sussex, England-2Oct2011 (1).jpg, Seaside pleasure pier in Brighton, England. The first seaside piers were built in England in the early 19th century. A pier is a raised structure that rises above a body of ...

s and completely destroyed nearby

Vanport, Oregon Vanport, sometimes referred to as Vanport City or Kaiserville, was a city of wartime public housing in Multnomah County, Oregon, United States, between the contemporary Portland, Oregon, Portland city boundary and the Columbia River. It was destr ...

. Construction of

The Dalles Dam The Dalles Dam is a concrete-gravity run-of-the-river dam spanning the Columbia River, two miles (3 km) east of the city of The Dalles, Oregon, United States. It joins Wasco County, Oregon with Klickitat County, Washington, 300 miles (309&nbs ...

and destruction of

Celilo Falls Celilo Falls (Wyam, meaning "echo of falling water" or "sound of water upon the rocks," in several native languages) was a tribal fishing area on the Columbia River, just east of the Cascade Mountains, on what is today the border between the U.S. ...

are credited with a decrease in such floods. Significant windstorms in Clark County include the

Columbus Day Columbus Day is a national holiday in many countries of the Americas and elsewhere, and a federal holiday in the United States, which officially celebrates the anniversary of Christopher Columbus's arrival in the Americas on October 12, 1492. ...

windstorm of October 12, 1962, and an April 6, 1972 tornado which rated F3 on the

Fujita scale The Fujita scale (F-Scale; ), or Fujita–Pearson scale (FPP scale), is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determ ...

, striking a local school. A " Friday the 13th" storm in November 1981 brought winds up to , with other storms including the

inauguration day The inauguration of the president of the United States is a ceremony to mark the commencement of a new four-year term of the president of the United States. During this ceremony, between 73 to 79 days after the presidential election, the pres ...

storm of January 20, 1993, the Guadalupe Day storm of December 12, 1995 (with winds up to at

Washougal, Washington Washougal ( ) is a city in Clark County, Washington, United States. The population was 17,039 as of the 2020 census. History Washougal was officially incorporated on December 4, 1908. Its Mount Pleasant Grange Hall is the oldest continually u ...

) and small tornado on January 10, 2008, which destroyed a boathouse at Vancouver Lake and caused damage to buildings in Hazel Dell before dissolving near Hockinson.

Geographic features

Major highways

Interstate 5 Interstate 5 (I-5) is the main north–south Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the contiguous U.S. from Mexico to Canada. It travels through the states of Califor ...

Interstate 205 Interstate 205 may refer to either of two unconnected Interstate Highways in the United States, both of which are related to Interstate 5 * Interstate 205 (California), a connector in the San Francisco Bay Area * Interstate 205 (Oregon–Washing ...

State Route 14 * WA-500

State Route 500 * WA-501

State Route 501 * WA-502

State Route 502 * WA-503

State Route 503

Former major highway

U.S. Route 99 * US 830 (1961)

U.S. Route 830 * WA-120

State Route 120 * WA-140

State Route 140

Adjacent counties

* Cowlitz County - north *

- east *

Multnomah County, Oregon Multnomah County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the county's population was 815,428. Multnomah County is part of the Portland–Vancouver– Hillsboro, OR–WA Metropolitan Statistical Area. Thou ...

- south *

Columbia County, Oregon Columbia County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 52,589. The county seat is St. Helens. History The Chinook and Clatskanie Native American peoples inhabited this region for c ...

- southwest

National protected areas

* Fort Vancouver National Historic Site (part) *

(part) *

Ridgefield National Wildlife Refuge Ridgefield National Wildlife Refuge is a wildlife refuge, one of the national wildlife refuges operated by the United States Fish and Wildlife Service, located in the westernmost part of Clark County, Washington. The refuge protects more than o ...

Steigerwald Lake National Wildlife Refuge The Steigerwald Lake National Wildlife Refuge is a riverine flood plain habitat, semi-permanent wetland on the Columbia River, east of Vancouver, Washington, with cottonwood-dominated riparian corridors, pastures, and remnant stands of Oregon ...

Demographics

2000 census

As of the

census A census is the procedure of systematically acquiring, recording and calculating information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses incl ...

of 2000, there were 345,238 people, 127,208 households, and 90,953 families residing in the county. The

population density Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopul ...

was 550 people per square mile (212/km²). There were 134,030 housing units at an average density of 213 per square mile (82/km²). The

racial A race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. The term came into common usage during the 1500s, when it was used to refer to groups of variou ...

makeup of the county was 88.82% White, 1.68% Black or African American, 0.84% Native American, 3.21% Asian, 0.37% Pacific Islander, 1.99% from other races, and 3.08% from two or more races. 4.71% of the population were Hispanic or Latino of any race. 17.7% were of

German German(s) may refer to: * Germany (of or related to) ** Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...

, 10.2%

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

, 8.6%

Irish Irish may refer to: Common meanings * Someone or something of, from, or related to: ** Ireland, an island situated off the north-western coast of continental Europe ***Éire, Irish language name for the isle ** Northern Ireland, a constituent unit ...

, 8.6%

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and 5.1%

Norwegian Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in northwestern Europe * Norwegians, both a nation and an ethnic group native to Norway * Demographics of Norway *The Norwegian language, including ...

ancestry. 88.8% spoke only

at home; 3.6% spoke

Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many Latin American countries **Spanish cuisine Other places * Spanish, Ontario, Can ...

and 1.9%

Russian Russian(s) refers to anything related to Russia, including: *Russians (, ''russkiye''), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *Rossiyane (), Russian language term for all citizens and peo ...

. There were 127,208 households, out of which 37.20% had children under the age of 18 living with them, 56.80% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognized union between people called spouses. It establishes rights and obligations between them, as well as between them and their children, and between t ...

living together, 10.30% had a female householder with no husband present, and 28.50% were non-families. 21.80% of all households were made up of individuals, and 6.80% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 3.15. In the county, the population was spread out, with 28.70% under the age of 18, 8.40% from 18 to 24, 30.80% from 25 to 44, 22.60% from 45 to 64, and 9.50% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 98.50 males. For every 100 females age 18 and over, there were 95.90 males. The median income for a household in the county was $48,376, and the median income for a family was $54,016. Males had a median income of $41,337 versus $28,537 for females. The

per capita income Per capita income (PCI) or total income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. It is calculated by dividing the area's total income by its total population. Per capita i ...

for the county was $21,448. About 6.90% of families and 9.10% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for t ...

, including 11.70% of those under age 18 and 6.80% of those age 65 or over.

2010 census

As of the 2010 census, there were 425,363 people, 158,099 households, and 110,672 families residing in the county. The population density was . There were 167,413 housing units at an average density of . The racial makeup of the county was 85.4% white, 4.1% Asian, 2.0% black or African American, 0.9% American Indian, 0.6% Pacific islander, 2.9% from other races, and 4.0% from two or more races. Those of Hispanic or Latino origin made up 7.6% of the population. In terms of ancestry, 24.4% were

, 13.1% were

, 5.7% were

, and 4.3% were

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

. Of the 158,099 households, 36.3% had children under the age of 18 living with them, 53.6% were married couples living together, 11.3% had a female householder with no husband present, 30.0% were non-families, and 23.1% of all households were made up of individuals. The average household size was 2.67 and the average family size was 3.15. The median age was 36.7 years. The median income for a household in the county was $58,262 and the median income for a family was $67,352. Males had a median income of $52,160 versus $38,167 for females. The per capita income for the county was $27,828. About 7.8% of families and 10.9% of the population were below the

, including 14.9% of those under age 18 and 7.2% of those age 65 or over.

Religion

Clark County is religiously diverse, with no single group comprising 10% of the population. The four groups that exceed 1% are nondenominational Christian with 30,026 members, the

Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

with 26,886 members, The Church of Jesus Christ of Latter-day Saints with 20,793 members, and the Evangelical Lutheran Church of America with 4,827. The area is also home to the nation's largest population of the Old Apostolic Lutheran Church with between 5,000 and 6,000 members living in the county. This is estimated because the Church doesn't keep membership rolls.

Emergency services

The Clark County Sheriff's Office is the local, county-level law enforcement agency serving Clark County, Washington. The sheriff's office was established in 1849 and is the oldest law enforcement organization in the state of

. Sheriff Chuck Atkins and Undersheriff John Chapman lead the Clark County Sheriff's Office. CCSO Patrol Car 2

On March 16, 2014, Clark County Fire & Rescue commissioned the ''Mary Firstenburg (fireboat), Mary Firstenburg'', a new fireboat purchased with the financial support from a bequest from Firstenburg's family, and from a FEMA Port Security Grant.

Politics

Clark County is a swing county in U.S. presidential elections that recently has voted slightly more Republican than the state and nation as a whole. For example, in 2012 President Obama carried Clark County by a few hundred votes representing a fraction of a percent, he ran behind his national showing of a 3% margin. George W. Bush carried the county twice, by 52% to 47% over John Kerry in 2004 United States presidential election, 2004 and by 49% to 46% over Al Gore in 2000 United States presidential election, 2000. Clark County usually votes for the winning presidential candidate. It voted for Ronald Reagan twice and for Bill Clinton twice. The last three presidential elections where Clark County did not vote for the national winner were 1968 United States presidential election, 1968, when it voted for Hubert Humphrey, Humphrey over Richard Nixon, Nixon, and 1988 United States presidential election, 1988, when it voted for Michael Dukakis, Dukakis over George H.W. Bush, Bush, as well as in 2016 when the county narrowly voted for Democratic nominee Hillary Clinton over Republican nominee and winner of the election Donald Trump. In the 2020 election, Joe Biden carried the county and significantly improved upon Hillary Clinton's margins and outperformed Trump by five percentage points. The county's legislative body is the Clark County Council which was created in 2014. The current elected officials are: * Assessor - Peter Van Nortwick (R) * Auditor - Greg Kimsey (R) * Clerk - Scott Weber (R) * Councilors - County Chair (At Large) Eileen Quiring (R) ** District 1 Temple Lentz (D) ** District 2 Julie Olson (R) ** District 3 John Blom (R) ** District 4 Gary Medvigy (R) * Prosecuting Attorney - Tony Golik (D) * Sheriff - Chuck E. Atkins (R) * Treasurer - Alishia Topper (NP)

Communities

Cities

*Battle Ground, Washington, Battle Ground *Camas, Washington, Camas *La Center, Washington, La Center * Ridgefield *

(county seat) *Washougal, Washington, Washougal *Woodland, Washington, Woodland (mostly in Cowlitz County)

Town

* Yacolt

Census-designated places

*Amboy, Washington, Amboy *Barberton, Washington, Barberton *Brush Prairie, Washington, Brush Prairie *Cherry Grove, Washington, Cherry Grove *Dollars Corner, Washington, Dollars Corner *Duluth, Washington, Duluth *Felida, Washington, Felida *Fern Prairie, Washington, Fern Prairie *Five Corners, Washington, Five Corners * Hazel Dell * Hockinson *Lake Shore, Washington, Lake Shore *Lewisville, Washington, Lewisville *Meadow Glade, Washington, Meadow Glade *Minnehaha, Washington, Minnehaha *Mount Vista, Washington, Mount Vista *Orchards, Washington, Orchards *Salmon Creek, Washington, Salmon Creek *Venersborg, Washington, Venersborg *Walnut Grove, Washington, Walnut Grove

Unincorporated communities

*Chelatchie, Washington, Chelatchie *Etna, Washington, Etna *Fargher Lake, Washington, Fargher Lake *Heisson, Washington, Heisson *Mill Plain, Washington, Mill Plain

Education

School districts include:
Text list
/ref> * Battle Ground School District * Camas School District * Evergreen School District (Clark) * Green Mountain School District * Hockinson School District * La Center School District * Mount Pleasant School District * Ridgefield School District (Washington), Ridgefield School District * Vancouver Public Schools * Washougal School District * Woodland School District State-operated schools: * Washington State School for the Blind * Washington School for the Deaf

References

External links

Official county website

Clark County Historic Photographs

Guide to Clark County Washington
{{Washington Clark County, Washington, 1845 establishments in Oregon Country Populated places established in 1845 Columbia River Gorge Portland metropolitan area counties Western Washington