Natrona County is a

county A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...

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 so ...

Wyoming Wyoming ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States, Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho t ...

. As of the 2020 United States census, the population was 79,955, making it the second-most populous county in Wyoming. Its

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

is Casper. Natrona County comprises the Casper, WY Metropolitan Statistical Area. In 2010, the

center of population In Demography, demographics, the center of population (or population center) of a region is a geographical point that describes a centerpoint of the region's population. There are several ways of defining such a "center point", leading to dif ...

of Wyoming was in Natrona County, near Alcova.

History

Prior to Wyoming's settlement by European-based populations, the area's stretches played host to nomadic tribes such as

Cheyenne The Cheyenne ( ) are an Indigenous people of the Great Plains. The Cheyenne comprise two Native American tribes, the Só'taeo'o or Só'taétaneo'o (more commonly spelled as Suhtai or Sutaio) and the (also spelled Tsitsistas, The term for th ...

Arapaho The Arapaho ( ; , ) are a Native American people historically living on the plains of Colorado and Wyoming. They were close allies of the Cheyenne tribe and loosely aligned with the Lakota and Dakota. By the 1850s, Arapaho bands formed t ...

Shoshone The Shoshone or Shoshoni ( or ), also known by the endonym Newe, are an Native Americans in the United States, Indigenous people of the United States with four large cultural/linguistic divisions: * Eastern Shoshone: Wyoming * Northern Shoshon ...

, and

Sioux The Sioux or Oceti Sakowin ( ; Dakota/ Lakota: ) are groups of Native American tribes and First Nations people from the Great Plains of North America. The Sioux have two major linguistic divisions: the Dakota and Lakota peoples (translati ...

. New York investor

John Jacob Astor John Jacob Astor (born Johann Jakob Astor; July 17, 1763 – March 29, 1848) was a German-born American businessman, merchant, real estate mogul, and investor. Astor made his fortune mainly in a fur trade monopoly, by exporting History of opiu ...

established the settlement of Astoria on the

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

, and sent Robert Stuart eastward to blaze a trail and lay the foundation of a string of trading posts. Stuart documented the South Pass Route through the

Continental Divide A continental divide is a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not ...

, near the SW corner of present-day Natrona County. Stuart's company erected the first hut in the area in 1812, near present-day Bessemer Bend. In 1840, Father

Pierre-Jean De Smet Pierre-Jean De Smet, SJ ( ; 30 January 1801 – 23 May 1873), also known as Pieter-Jan De Smet, was a Flemish Catholic priest and member of the Society of Jesus (Jesuits). He is known primarily for his widespread missionary work in the mid-19t ...

began preaching the Christian teaching to this area's indigenous peoples. He carved his name on Independence Rock and called it ''The Register of the Desert''. Later explorers who inscribed the rock include

John C. Frémont Major general (United States), Major-General John Charles Frémont (January 21, 1813July 13, 1890) was a United States Army officer, explorer, and politician. He was a United States senator from California and was the first History of the Repub ...

(1843), who explored the country along the Platte and Sweetwater Rivers. The first Euro-American settlement occurred in the Casper area in the late 19th century. Natrona County was created by the legislature of the Wyoming Territory on March 9, 1888, and it was organized in 1890. The land for Natrona County was annexed from Carbon County. Natrona County was named for the deposits of

natron Natron is a naturally occurring mixture of sodium carbonate decahydrate ( Na2CO3·10H2O, a kind of soda ash) and around 17% sodium bicarbonate (also called baking soda, NaHCO3) along with small quantities of sodium chloride and sodium sulfate. ...

found in the area. According to George Mitchell, first mayor of Casper and member of the organization commission for Natrona County, the name was first suggested "by my old friend the late Cy Iba, who at one time owned the soda lakes." In 1909, Natrona County gained land from Fremont County. The boundaries were adjusted slightly in 1911 and 1931, and at that point the county gained its present outline.

Geography

According to the

U.S. Census Bureau The United States Census Bureau, 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 U.S. Census Bureau is part of the U ...

, the county has an area of , of which is land and (0.7%) is water.

Geographic features

* Casper Mountain * Devil's Gate * Hell's Half Acre * Independence Rock * Martin's Cove * Teapot Rock

Adjacent counties

* Johnson County – north * Converse County – east * Albany County – southeast * Carbon County – south * Fremont County – west * Washakie County – northwest

Major highways

Interstate 25 Interstate 25 (I-25), also known as the Pan-American Freeway, is a major Interstate Highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 st ...

* *

U.S. Highway 20 * US 26

U.S. Highway 26 * US 87

U.S. Highway 87 * US 287

U.S. Highway 287 * Wyoming Highway 220 * Wyoming Highway 251 *

Wyoming Highway 252 Wyoming Highway 252 (WYO 252) is a Wyoming state road in Natrona County, Wyoming, Natrona County, serving the areas just south of the City of Casper, Wyoming, Casper. It is locally known as Garden Creek Road from WYO 251 to the Casper cit ...

* Wyoming Highway 253 * Wyoming Highway 256 * Wyoming Highway 257 * Wyoming Highway 258 * Wyoming Highway 259 * Wyoming Highway 387 * Wyoming Highway 487

Transit

* Casper Area Transit *

Express Arrow Express, The Expresss or EXPRESS may refer to: Arts, entertainment and media Film * '' Express: Aisle to Glory'', a 1998 comedy short film featuring Kal Penn * '' The Express: The Ernie Davis Story'', a 2008 film starring Dennis Quaid * The Ex ...

Geology

Natrona County derives its name from the vast deposits of the mineral

Natron Natron is a naturally occurring mixture of sodium carbonate decahydrate ( Na2CO3·10H2O, a kind of soda ash) and around 17% sodium bicarbonate (also called baking soda, NaHCO3) along with small quantities of sodium chloride and sodium sulfate. ...

found within the county. Of the 18 million tons of Natron consumed by American industry annually 17 Million tons is mined in Wyoming due to it purity.

National protected areas

* Medicine Bow National Forest (part) * Pathfinder National Wildlife Refuge (part)

Demographics

2000 census

As of the 2000 United States Census, of 2000, there were 66,533 persons, 26,819 households, and 17,754 families in the county. The

population density Population density (in agriculture: Standing stock (disambiguation), 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 geog ...

was . There were 29,882 housing units at an average density of . The

racial 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 16th century, when it was used to refer to groups of va ...

makeup of the county was 94.15%

White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

, 0.76%

Black Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...

African American African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...

, 1.03% Native American, 0.42% Asian, 0.04%

Pacific Islander Pacific Islanders, Pasifika, Pasefika, Pacificans, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe th ...

, 1.92% from other races, and 1.68% from two or more races. 4.90% of the population were

Hispanic The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...

or Latino of any race. 24.6% were of

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

, 11.6% English, 11.3% American and 11.2% Irish ancestry. There were 26,819 households, out of which 32.20% had children under the age of 18 living with them, 51.40% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognised union between people called spouses. It establishes rights and obligations between them, as well as between them and their children (if any), and b ...

living together, 10.60% had a female householder with no husband present, and 33.80% were non-families. 27.50% of all households were made up of individuals, and 9.40% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.95. The county population contained 26.00% under the age of 18, 10.10% from 18 to 24, 27.90% from 25 to 44, 23.30% from 45 to 64, and 12.70% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 97.70 males. For every 100 females age 18 and over, there were 95.00 males. The median income for a household in the county was $36,619, and the median income for a family was $45,575. Males had a median income of $33,524 versus $21,374 for females. The

per capita income Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such ...

for the county was $18,913. About 8.70% of families and 11.80% 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 ...

, including 16.20% of those under age 18 and 7.20% of those age 65 or over.

2010 census

As of the 2010 United States Census, there were 75,450 people, 30,616 households, and 19,714 families in the county. The population density was . There were 33,807 housing units at an average density of . The racial makeup of the county was 92.8% white, 1.0% American Indian, 0.9% black or African American, 0.7% Asian, 0.1% Pacific islander, 2.2% from other races, and 2.4% from two or more races. Those of Hispanic or Latino origin made up 6.9% of the population. In terms of ancestry, 27.2% were

, 15.2% were Irish, 13.2% were English, and 10.7% were American. Of the 30,616 households, 31.9% had children under the age of 18 living with them, 48.1% were married couples living together, 10.9% had a female householder with no husband present, 35.6% were non-families, and 28.5% of all households were made up of individuals. The average household size was 2.41 and the average family size was 2.94. The median age was 36.8 years. The median income for a household in the county was $50,936 and the median income for a family was $62,859. Males had a median income of $47,610 versus $30,664 for females. The per capita income for the county was $28,235. About 5.4% of families and 8.4% of the population were below the

, including 9.9% of those under age 18 and 8.8% of those age 65 or over.

Communities

Cities

* Casper (county seat and largest municipality)

Towns

* Bar Nunn * Edgerton *

Evansville Evansville is a city in Vanderburgh County, Indiana, United States, and its county seat. With a population of 118,414 at the 2020 census, it is Indiana's third-most populous city after Indianapolis and Fort Wayne, the most populous city in S ...

Midwest The Midwestern United States (also referred to as the Midwest, the Heartland or the American Midwest) is one of the four census regions defined by the United States Census Bureau. It occupies the northern central part of the United States. It ...

* Mills

Unincorporated areas

Census-designated places

* Alcova * Antelope Hills * Bessemer Bend * Brookhurst * Casper Mountain * Hartrandt * Homa Hills * Meadow Acres * Mountain View * Powder River * Red Butte * Vista West

Other communities

* Arminto * Bucknum * Crimson Dawn * Goose Egg * Hells Half Acre * Hiland * Natrona * Strouds

Politics

Like almost all of Wyoming, Natrona is a heavily Republican county. It is rather conservative for an urban county, having gone Republican in all but three elections since 1944. No Democratic presidential candidate has won forty percent of the county's vote since

Lyndon Johnson Lyndon Baines Johnson (; August 27, 1908January 22, 1973), also known as LBJ, was the 36th president of the United States, serving from 1963 to 1969. He became president after assassination of John F. Kennedy, the assassination of John F. Ken ...

garnered 52 percent in his 1964 landslide against

Barry Goldwater Barry Morris Goldwater (January 2, 1909 – May 29, 1998) was an American politician and major general in the United States Air Force, Air Force Reserve who served as a United States senator from 1953 to 1965 and 1969 to 1987, and was the Re ...

Bill Clinton William Jefferson Clinton (né Blythe III; born August 19, 1946) is an American politician and lawyer who was the 42nd president of the United States from 1993 to 2001. A member of the Democratic Party (United States), Democratic Party, ...

did win a 100-vote plurality in the 1992 election due to a significant third-party vote. In 2024,

Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...

received 72.7% of the vote, the county's highest vote percentage for any presidential candidate since Wyoming statehood in 1890. Natrona County is governed by a commission, based in the county seat of Casper. The five-member board consists of commissioners, elected to staggered four-year terms. Current commissioners are: * Forrest Chadwick (chairman) – Republican * John Lawson (Vice-chairman) – Republican * Matt Keating – Republican * Rob Hendry – Republican * Steve Schlager – Republican

Education

Natrona County School District Number 1 is the school district for the entire county.
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References

External links

* {{Coord, 42.97, -106.80, display=title, type:adm2nd_region:US-WY_source:UScensus1990 World War II Heritage Cities 1890 establishments in Wyoming Populated places established in 1890