Polk County, Iowa

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Polk County, Iowa
Polk County Court House.jpg
Polk County Court House
Location within Iowa
Location within Iowa
Map of the United States highlighting Iowa
Iowa's location within the U.S.
Founded1846
Named forJames K. Polk
SeatDes Moines
Largest cityDes Moines
Area
 • Total592 sq mi (1,533 km2)
 • Land574 sq mi (1,487 km2)
 • Water18 sq mi (47 km2), 3.0%
Population
 • (2010)430,640
 • Density751/sq mi (290/km2)
Congressional district3rd
Time zoneCentral: UTC−6/−5
Websitewww.polkcountyiowa.gov

Polk County is a county in the U.S. state of Iowa. As of the 2010 census, 430,640 people lived there. It the most populous county in Iowa.[1][2] The county seat is Des Moines,[3]. Des Moines is also the capital city of Iowa. Polk County is one of the five counties that make up the Des Moines-West Des Moines Metropolitan Statistical Area.[4]

History[change | change source]

Polk County was formed on January 13, 1846. It was named after President James K. Polk. The first courthouse was built in 1846. Construction of a second courthouse was begun in 1858. It was finished in 1866.

Geography[change | change source]

Historical populations
Census Pop.
18504,513
186011,625157.6%
187027,857139.6%
188042,39552.2%
189065,41054.3%
190082,62426.3%
1910110,43833.7%
1920154,02939.5%
1930172,83712.2%
1940195,83513.3%
1950226,01015.4%
1960266,31517.8%
1970286,1017.4%
1980303,1706.0%
1990327,1407.9%
2000374,60114.5%
2010430,64015.0%
Iowa Data Center[2]

The county has a total area of 591.90 square miles (1,533.0 km2). Of this, 569.35 square miles (1,474.6 km2) (or 96.19%) is land and 22.55 square miles (58.4 km2) (or 3.81%) is water.[5] The county is bisected by the Des Moines River


Adjacent counties[change | change source]

Communities[change | change source]

Cities[change | change source]

Unincorporated communities[change | change source]

References[change | change source]

  1. "Population & Housing Occupancy Status 2010". United States Census Bureau American FactFinder. Retrieved 2011-06-01.
  2. 2.0 2.1 "Data from the 2010 Census". State Data Center of Iowa. Retrieved 2011-06-01.
  3. "Find a County". National Association of Counties. Retrieved 2008-01-31.
  4. United States Office of Management and Budget. "Update of Statistical Area Definitions and Guidance on Their Uses" (PDF). pp. 5, 36. Archived from the original (PDF) on 2006-05-14. Retrieved 2006-07-21.
  5. "Census 2000 U.S. Gazetteer Files: Counties". United States Census. Retrieved 2011-02-13.

Other websites[change | change source]

Coordinates: 41°41′06″N 93°34′13″W / 41.68500°N 93.57028°W / 41.68500; -93.57028