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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]
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 counties and county equivalents (in the 50 states) are the independent cities of Virginia with the extreme being Falls Church at 2.05 sq mi (5.3 km 2; 1,310 acres). [8] If the U.S. territories are included, the smallest county-equivalent is Kingman Reef , with a land area of 0.012 square miles (3.1 ha; 7.7 acres).
According to the 2020 United States Census, Iowa has 3,190,369 inhabitants and 55,857.13 square miles (144,669.3 km 2) of land. [1] Iowa is divided into 99 counties and has 943 cities. Every incorporated place in Iowa is called a "city", regardless of population.
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Adams County is a county in the U.S. state of Iowa. As of the 2020 census , the population was 3,704, [ 1 ] making it Iowa's least-populous county. Its county seat is Corning .
The OMB defines a core-based statistical area (commonly referred to as a CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population, [2] "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with ...
It is the third-smallest county in Iowa by land area and smallest by total area. ... In the county, the population was spread out, with 26.10% under the age of 18, 7. ...