Clayton County, Iowa

Clayton County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 18,129.[1] Its county seat is Elkader.[2] The county was established in 1837 and was named in honor of John M. Clayton,[3] United States Senator from Delaware and later Secretary of State under President Zachary Taylor.

Clayton County
U.S. county
Winter scene near Elkader
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 42°50′37″N 91°20′36″W
Country United States
State Iowa
Founded1837
Named forJohn M. Clayton
SeatElkader
Largest cityGuttenberg
Area
 • Total793 sq mi (2,050 km2)
 • Land779 sq mi (2,020 km2)
 • Water14 sq mi (40 km2)  1.8%
Population
 (2010)
 • Total18,129
 • Estimate 
(2018)
17,556
 • Density23/sq mi (8.8/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district1st
Websitewww.claytoncountyia.gov

Geography
Route W68 shield

According to the U.S. Census Bureau, the county has a total area of 793 square miles (2,050 km2), of which 779 square miles (2,020 km2) is land and 14 square miles (36 km2) (1.8%) is water.[4] It is the fifth-largest county in Iowa by area.

Adjacent counties

Major highways

National protected areas

Geology

Clayton County is part of the Driftless Area, a region that completely missed being ice-covered during the last ice age. Streams have deeply carved valleys, while the Mississippi River has spectacular bluffs.

Demographics
Historical population
CensusPop.%±
18503,873—
186020,728435.2%
187027,77134.0%
188028,8293.8%
189026,733−7.3%
190027,7503.8%
191025,576−7.8%
192025,032−2.1%
193024,559−1.9%
194024,334−0.9%
195022,522−7.4%
196021,962−2.5%
197020,606−6.2%
198021,0982.4%
199019,054−9.7%
200018,678−2.0%
201018,129−2.9%
2018 (est.)17,556[5]−3.2%
U.S. Decennial Census[6]
1790-1960[7] 1900-1990[8]
1990-2000[9] 2010-2018[1]

2010 census

The 2010 census recorded a population of 18,130 in the county, with a population density of 23.272/sq mi (8.985/km2). There were 8,999 housing units, of which 7,599 were occupied.[10]

2000 census
2000 Census Age Pyramid for Clayton County

As of the census[11] of 2000, there were 18,678 people, about 7,500 households, and 1 family residing in the county. The population density was 24 people per square mile (9/km2). There were 8,620 housing units at an average density of 11 per square mile (4/km2). The racial makeup of the county was 98.93% White, 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 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 for the county was $16,930. About 5.70% of families and 8.60% of the population were below the poverty line, including 9.60% of those under age 18 and 9.40% of those age 65 or over.

Communities

Cities

Unincorporated communities

Townships

Clayton County is divided into these townships:

Population ranking

The population ranking of the following table is based on the 2010 census of Clayton County.[12]

† county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Postville (partially in Allamakee County) City 2,227
2 Guttenberg City 1,919
3 Monona City 1,549
4 Strawberry Point City 1,279
5 † Elkader City 1,273
6 McGregor City 872
7 Edgewood (partially in Delaware County) City 864
8 Garnavillo City 745
9 Marquette City 375
10 Farmersburg City 302
11 Luana City 269
12 Volga City 208
13 North Buena Vista City 121
14 St. Olaf City 108
15 Garber City 88
16 Osterdock City 59
17 Clayton City 43
18 Elkport former City 37
19 Millville former City 30

Politics
Presidential Elections Results
Presidential Elections Results[13]
Year Republican Democratic Third Parties
2016 58.2% 5,317 35.5% 3,237 6.3% 575
2012 45.6% 4,164 52.6% 4,806 1.8% 168
2008 40.6% 3,651 57.8% 5,195 1.6% 144
2004 47.0% 4,312 51.7% 4,736 1.3% 120
2000 47.1% 4,034 49.5% 4,238 3.5% 299
1996 35.9% 2,944 52.3% 4,284 11.8% 966
1992 33.1% 3,044 40.7% 3,742 26.2% 2,404
1988 46.6% 3,839 52.4% 4,320 1.0% 83
1984 58.8% 5,029 40.3% 3,446 0.9% 78
1980 55.6% 5,115 35.8% 3,297 8.6% 794
1976 54.8% 4,826 43.2% 3,804 2.0% 177
1972 60.2% 5,447 37.2% 3,366 2.6% 235
1968 57.8% 5,132 35.7% 3,168 6.5% 578
1964 41.1% 3,923 58.9% 5,624 0.0% 3
1960 58.3% 6,441 41.7% 4,612 0.0% 4
1956 59.8% 6,529 40.1% 4,384 0.1% 13
1952 67.2% 7,669 32.7% 3,730 0.1% 9
1948 50.9% 5,151 48.0% 4,857 1.0% 103
1944 57.6% 5,855 41.9% 4,259 0.5% 49
1940 59.9% 7,443 40.0% 4,973 0.1% 18
1936 41.0% 5,017 55.0% 6,731 4.0% 488
1932 33.5% 3,725 66.0% 7,347 0.6% 62
1928 61.3% 6,774 38.3% 4,231 0.4% 49
1924 41.5% 4,168 15.5% 1,556 43.0% 4,325
1920 77.5% 6,747 20.8% 1,808 1.7% 151
1916 57.5% 3,347 40.9% 2,379 1.6% 91
1912 21.1% 1,239 49.8% 2,919 29.1% 1,703
1908 47.0% 2,773 51.3% 3,026 1.6% 96
1904 54.6% 3,339 43.0% 2,628 2.5% 150
1900 53.1% 3,366 45.5% 2,884 1.5% 92
1896 52.2% 3,302 46.0% 2,910 1.9% 119

See also

References
  1. "State & County QuickFacts". United States Census Bureau. Archived from the original on July 8, 2011. Retrieved July 14, 2014.
  2. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. pp. 84.
  4. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
  5. "Population and Housing Unit Estimates". Retrieved June 22, 2019.
  6. "U.S. Decennial Census". United States Census Bureau. Retrieved July 14, 2014.
  7. "Historical Census Browser". University of Virginia Library. Retrieved July 14, 2014.
  8. "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 14, 2014.
  9. "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 14, 2014.
  10. "Population and Housing Occupancy Status: 2010 - State -- County". United States Census Bureau American FactFinder. Retrieved March 12, 2011.
  11. "U.S. Census website". United States Census Bureau. Retrieved 2008-01-31.
  12. "Archived copy". Retrieved February 10, 2013.
  13. Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 25, 2018.

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