Polk County, Iowa

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Polk County, Iowa
Map
Map of Iowa highlighting Polk County
Location in the state of Iowa
Map of the USA highlighting Iowa
Iowa's location in the U.S.
Statistics
Founded 1846
Seat Des Moines
Area
 - Total
 - Land
 - Water

591.90 sq mi (1,533 km²)
569.35 sq mi (1,475 km²)
22.55 sq mi (58 km²), 3.81%
Population
 - (2010)
 - Density

430,640
756/sq mi (292/km²)
Time zone Central: UTC-6/-5
Website: www.polkcountyiowa.gov
Named for: President Polk
Population [1]

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.
1850 4,513
1860 11,625 157.6%
1870 27,857 139.6%
1880 42,395 52.2%
1890 65,410 54.3%
1900 82,624 26.3%
1910 110,438 33.7%
1920 154,029 39.5%
1930 172,837 12.2%
1940 195,835 13.3%
1950 226,010 15.4%
1960 266,315 17.8%
1970 286,101 7.4%
1980 303,170 6.0%
1990 327,140 7.9%
2000 374,601 14.5%
2010 430,640 15.0%
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]

Other websites[change | change source]

Coordinates: 41°41′06″N 93°34′13″W / 41.685°N 93.57028°W / 41.685; -93.57028