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Polk County is located in the U.S. state of Iowa. As of the 2020 census, the population was 492,401. [1] It is Iowa's most populous county, and home to over 15% of the state's residents. The county seat is Des Moines, [2] which is also the capital city of Iowa. Polk County is included in the Des Moines–West Des Moines, IA Metropolitan ...
The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico. [2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.
Map of the United States with Iowa highlighted. Iowa is a state located in the Midwestern United States that is divided into 99 counties and contains 62 census-designated places (CDPs). [1] All population data is based on the 2010 census.
The smallest county (Dickinson) has a land area of 381 sq mi (990 km 2), while the largest (Kossuth) has an area 973 sq mi (2,520 km 2). Polk County is the most densely populated county at 864/sq mi (333.5/km 2 ), an increase in density from 2010 when it was 655.5/sq mi (253.08/km 2 ). [ 7 ]
The metro area consists of six counties in central Iowa: Polk, Dallas, Warren, Madison, Guthrie, and Jasper. [2] The Des Moines – Ames – West Des Moines Combined Statistical Area (CSA) encompasses the separate metropolitan area of Ames ( Story Country ), and the separate micropolitan area of Boone ( Boone County ).
Polk City is a city in Polk County, Iowa, United States. The population was 5543 in the 2020 census , an increase from 2,344 in 2000 . [ 3 ] It is part of the Des Moines – West Des Moines Metropolitan Statistical Area .
Grimes is a city in Polk and Dallas counties in the U.S. state of Iowa. The population was 15,392 at the time of the 2020 Census . [ 4 ] Grimes is part of the Des Moines-West Des Moines metropolitan area .
Altoona is a city in Polk County, Iowa, United States, and part of the Des Moines metropolitan area. The population was 19,565 at the 2020 census. [3] It is home to the Adventureland amusement park and Prairie Meadows horse racing track and casino.