Clayton 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 ...

located 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 ...

Iowa Iowa ( ) is a U.S. state, state in the upper Midwestern United States, Midwestern region of the United States. It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Ill ...

. As of the 2020 census, the population was 17,043. 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 Elkader. The county was established in 1837 and was named in honor of John M. Clayton,

United States Senator The United States Senate consists of 100 members, two from each of the 50 U.S. state, states. This list includes all senators serving in the 119th United States Congress. Party affiliation Independent Senators Angus King of Maine and Berni ...

from

Delaware Delaware ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic and South Atlantic states, South Atlantic regions of the United States. It borders Maryland to its south and west, Pennsylvania to its north, New Jersey ...

and later Secretary of State under President

Zachary Taylor Zachary Taylor (November 24, 1784 – July 9, 1850) was an American military officer and politician who was the 12th president of the United States, serving from 1849 until his death in 1850. Taylor was a career officer in the United States ...

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 a total area of , of which is land and (1.8%) is water. It is the fifth-largest county in Iowa by area.

Adjacent counties

* Allamakee County (north) * Crawford County,

Wisconsin Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...

(northeast) *

Grant County Grant County may refer to: Places ;Australia * County of Grant, Victoria ;United States * Grant County, Arkansas * Grant County, Indiana * Grant County, Kansas *Grant County, Kentucky Grant County is a county located in the northern pa ...

(east) *

Dubuque County Dubuque County is a County (United States), county located in the U.S. state of Iowa. As of the 2020 United States census, 2020 census, the population was 99,266, making it the eighth-most populous county in Iowa. The county seat is Dubuque, Io ...

(southeast) * Delaware County (south) * Buchanan County (southwest) * Fayette County (west) * Winneshiek County (northwest)

Major highways

U.S. Highway 18 * US 52

U.S. Highway 52 * Circle sign 3

Iowa Highway 3 Iowa Highway 3 (Iowa 3) is a state highway that runs from east to west across the state of Iowa. It is the longest state highway in Iowa, at long. Iowa 3 begins at the South Dakota state line where it continues as South Dakota High ...

Iowa Highway 13 Iowa Highway 13 (Iowa 13) is a north–south highway in eastern Iowa. It has a length of . The southern terminus of Iowa Highway 13 is at U.S. Highway 30 (US 30) south of Bertram and southeast of Cedar Rapids. The northern terminus is a ...

Iowa Highway 56 * Elongated circle 76

Iowa Highway 76 * Elongated circle 128

Iowa Highway 128

National protected areas

* Driftless Area National Wildlife Refuge (part) * Effigy Mounds National Monument (part) *

Upper Mississippi River National Wildlife and Fish Refuge The Upper Mississippi River National Wildlife and Fish Refuge is a , See also * Izaak Walton League * List of National Wildlife Refuges *Trempealeau National Wildlife Refuge Trempealeau National Wildlife Refuge is a National Wildlife Refuge ...

(part)

Geology

Clayton County is part of the

Driftless Area The Driftless Area, also known as Bluff Country and the Paleozoic Plateau, is a topographic and cultural region in the Midwestern United States that comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme ...

, a region that completely missed being ice-covered during the last

ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and g ...

. Streams have deeply carved valleys, while the

Mississippi River The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...

has spectacular bluffs.

Demographics

2020 census

The 2020 census recorded a population of 17,043 in the county, with a population density of . 97.51% of the population reported being of one race. 93.21% were non-Hispanic White, 0.93% were Black, 2.01% were Hispanic, 0.25% were Native American, 0.28% were Asian, 0.04% were Native Hawaiian or Pacific Islander and 3.29% were some other race or more than one race. There were 8,758 housing units, of which 7,315 were occupied.

2010 census

The 2010 census recorded a population of 18,130 in the county, with a population density of . There were 8,999 housing units, of which 7,599 were occupied.

2000 census

As of the

census A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...

of 2000, there were 18,678 people, about 7,500 households, and 1 family residing 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 8,620 housing units at an average density of . The racial makeup of the county was 98.93%

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 ...

, 0.14% Black or African American, 0.22% Native American, 0.11% Asian, 0.01% Pacific Islander, 0.19% from other races, and 0.41% from two or more races. 0.76% of the population were Hispanic or Latino of any race. There were 7,375 households, out of which 30.90% had children under the age of 18 living with them, 59.70% 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, 6.10% had a female householder with no husband present, and 30.40% were non-families. 26.30% of all households were made up of individuals, and 13.30% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 2.98. In the county, the population was spread out, with 25.40% under the age of 18, 6.50% from 18 to 24, 26.00% from 25 to 44, 23.60% from 45 to 64, and 18.50% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 97.60 males. For every 100 females age 18 and over, there were 95.50 males. The median income for a household in the county was $34,068, and the median income for a family was $40,199. Males had a median income of $27,165 versus $19,644 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 $16,930. About 5.70% of families and 8.60% 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 9.60% of those under age 18 and 9.40% of those age 65 or over.

Communities

Cities

* Clayton * Edgewood * Elkader * Elkport * Farmersburg * Garber * Garnavillo * Guttenberg * Luana * Marquette * McGregor * Monona * North Buena Vista * Osterdock *

Postville Postville is a city in Allamakee County, Iowa, Allamakee and Clayton County, Iowa, Clayton counties in the U.S. state of Iowa. It lies near the junction of four counties and at the intersection of U.S. Routes U.S. Route 18 in Iowa, 18 and U.S. Ro ...

* St. Olaf * Strawberry Point *

Volga The Volga (, ) is the longest river in Europe and the longest endorheic basin river in the world. Situated in Russia, it flows through Central Russia to Southern Russia and into the Caspian Sea. The Volga has a length of , and a catchment ...

Unincorporated communities

* Beulah * Ceres * Clayton Center * Communia * Eckards * Fairview * Froelich * Giard * Gunder * Hardin *

Highland Highlands or uplands are areas of high elevation such as a mountainous region, elevated mountainous plateau or high hills. Generally, ''upland'' refers to a range of hills, typically from up to , while ''highland'' is usually reserved for range ...

Littleport Littleport is a town in East Cambridgeshire, in the Isle of Ely, Cambridgeshire, England. It lies about north-east of Ely and south-east of Welney, on the Bedford Level South section of the River Great Ouse, close to Burnt Fen and Mare Fe ...

* McGregor Heights * Mederville * Millville *

Motor An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gene ...

* Osborne * Saint Sebald * Thomasville * Turkey River * Updegraff * Watson *

Wood Wood is a structural tissue/material found as xylem in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulosic fibers that are strong in tension and embedded in a matrix of lignin t ...

Townships

Clayton County is divided into these

townships A township is a form of human settlement or administrative subdivision. Its exact definition varies among countries. Although the term is occasionally associated with an urban area, this tends to be an exception to the rule. In Australia, Canad ...

: * Boardman * Buena Vista *

Cass Cass may refer to: People and fictional characters * Cass (surname), a list of people * Cass (given name), a list of people and fictional characters * Big Cass, ring name of wrestler William Morrissey * Cass, in British band Skunk Anansie * Cass, ...

* Clayton * Cox Creek *

Elk The elk (: ''elk'' or ''elks''; ''Cervus canadensis'') or wapiti, is the second largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. ...

* Farmersburg * Garnavillo * Giard * Grand Meadow *

* Jefferson * Lodomillo * Mallory * Marion * Mendon * Millville * Monona * Read *

Sperry Sperry may refer to: Places In the United States: * Sperry, Iowa, community in Des Moines County * Sperry, Missouri *Sperry, Oklahoma, town in Tulsa County * Sperry Chalet, historic backcountry chalet, Glacier National Park, Montana * Sperry Glaci ...

Wagner Wilhelm Richard Wagner ( ; ; 22 May 181313 February 1883) was a German composer, theatre director, essayist, and conductor who is chiefly known for his operas (or, as some of his mature works were later known, "music dramas"). Unlike most o ...

Population ranking

The population ranking of the following table is based on the 2020 census of Clayton County. † ''county seat''

Politics

Clayton County leaned Republican for most of its history, though starting in 1988 it saw a Democratic trend which lasted through 2012. In 2016 the county saw a heavy shift toward the Republican Party, and since then it has voted Republican by increasing margins; both 2020 and 2024 saw the strongest Republican support in the county since the landslide victory of

Dwight Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; October 14, 1890 – March 28, 1969) was the 34th president of the United States, serving from 1953 to 1961. During World War II, he was Supreme Commander of the Allied Expeditionar ...

in 1952.https://uselectionatlas.org/RESULTS/

References

External links

*
Clayton County Development Corporation's websiteClayton County Health and Demographic Data
{{authority control 1837 establishments in Wisconsin Territory Populated places established in 1837 Driftless Area Iowa counties on the Mississippi River