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Polk County, Iowa
Polk County is located in the U.S. state of Iowa. As of the 2020 census, the population was 492,401. making it the most populous county in Iowa, and was estimated to be 505,255 in 2023. The county seat is Des Moines, which is also the capital city of Iowa. Polk County is included in the Des Moines–West Des Moines, IA Metropolitan Statistical Area.
On January 13, 1846, the legislative body of the Iowa Territory authorized the creation of twelve counties in the Territory, with general descriptions of their boundaries. On January 17 they further enacted a resolution setting the effective date of the county government for Jasper and Polk Counties as March 1, 1846. Polk County's name referred to United States President James K. Polk, who served from 1845 to 1849.
The first courthouse, a two-story structure, was built in Des Moines in 1846. Rapid settlement and commercial growth in the county soon rendered this building insufficient, so construction of a larger building was initiated in 1858. Due to construction delays and the onset of the Civil War, the structure was not completed until 1866. The present courthouse was erected in 1906, and in 1962 it was extensively renovated and enlarged.
According to the United States Census Bureau, the county has a total area of 591.888 square miles (1,532.98 km2), of which 572.720 square miles (1,483.34 km2) is land and 19.168 square miles (49.64 km2) (3.0%) is water. The county is bisected by the Des Moines River.
As of the third quarter of 2024, the median home value in Polk County was $285,410.
As of the 2023 American Community Survey, there are 202,404 estimated households in Polk County with an average of 2.41 persons per household. The county has a median household income of $81,621. Approximately 11.5% of the county's population lives at or below the poverty line. Polk County has an estimated 71.0% employment rate, with 39.5% of the population holding a bachelor's degree or higher and 83.7% holding a high school diploma.
The top five reported ancestries (people were allowed to report up to two ancestries, thus the figures will generally add to more than 100%) were English (85.2%), Spanish (7.8%), Indo-European (1.5%), Asian and Pacific Islander (3.2%), and Other (2.2%).
The median age in the county was 36.8 years.
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Polk County, Iowa
Polk County is located in the U.S. state of Iowa. As of the 2020 census, the population was 492,401. making it the most populous county in Iowa, and was estimated to be 505,255 in 2023. The county seat is Des Moines, which is also the capital city of Iowa. Polk County is included in the Des Moines–West Des Moines, IA Metropolitan Statistical Area.
On January 13, 1846, the legislative body of the Iowa Territory authorized the creation of twelve counties in the Territory, with general descriptions of their boundaries. On January 17 they further enacted a resolution setting the effective date of the county government for Jasper and Polk Counties as March 1, 1846. Polk County's name referred to United States President James K. Polk, who served from 1845 to 1849.
The first courthouse, a two-story structure, was built in Des Moines in 1846. Rapid settlement and commercial growth in the county soon rendered this building insufficient, so construction of a larger building was initiated in 1858. Due to construction delays and the onset of the Civil War, the structure was not completed until 1866. The present courthouse was erected in 1906, and in 1962 it was extensively renovated and enlarged.
According to the United States Census Bureau, the county has a total area of 591.888 square miles (1,532.98 km2), of which 572.720 square miles (1,483.34 km2) is land and 19.168 square miles (49.64 km2) (3.0%) is water. The county is bisected by the Des Moines River.
As of the third quarter of 2024, the median home value in Polk County was $285,410.
As of the 2023 American Community Survey, there are 202,404 estimated households in Polk County with an average of 2.41 persons per household. The county has a median household income of $81,621. Approximately 11.5% of the county's population lives at or below the poverty line. Polk County has an estimated 71.0% employment rate, with 39.5% of the population holding a bachelor's degree or higher and 83.7% holding a high school diploma.
The top five reported ancestries (people were allowed to report up to two ancestries, thus the figures will generally add to more than 100%) were English (85.2%), Spanish (7.8%), Indo-European (1.5%), Asian and Pacific Islander (3.2%), and Other (2.2%).
The median age in the county was 36.8 years.