Founded 1843 Largest city Waterloo Time zone Central: UTC-6/-5 Population 132,546 (2013) | Named for Black Hawk Congressional district 1st Area 1,484 km² County seat Waterloo | |
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Website www.co.black-hawk.ia.us Destinations Waterloo, Cedar Falls, La Porte City, Hudson, Jesup Rivers Cedar River, Wapsipinicon River, Black Hawk Creek Colleges and Universities University of Northern Iowa, Hawkeye Community College, Allen College, La' James International College, College of Hair Design Points of interest Lost Island Water Park, Grout Museum, Silos & Smokestacks National, George Wyth Memorial, Hartman Reserve Nature C | ||
Black Hawk County is a county in the northeastern part of U.S. state of Iowa. As of the 2010 census, the population was 131,090, making it Iowa's fourth-most populous county. The county seat is Waterloo.
Contents
- Map of Black Hawk County IA USA
- History
- Geography
- Adjacent counties
- 2010 census
- 2000 census
- Census designated place
- Other unincorporated communities
- Townships
- Population ranking
- References
Map of Black Hawk County, IA, USA
Black Hawk County is part of the Waterloo-Cedar Falls, IA Metropolitan Statistical Area.
History
Black Hawk County was formed on February 17, 1843 from sections of Buchanan County. It was named after Black Hawk, a Sauk leader during the 1832 Black Hawk War.
Geography
According to the U.S. Census Bureau, the county has an area of 573 square miles (1,480 km2), of which 566 square miles (1,470 km2) is land and 6.9 square miles (18 km2) (1.2%) is water.
The Cedar River roughly divides the county in half from the northwest to the southeast corner. The land is mostly level since much of it is on the river's flood plain.
Adjacent counties
2010 census
The 2010 census recorded a population of 131,090 in the county, with a population density of 231.20/sq mi (89.27/km2). There were 55,887 housing units, of which 52,470 were occupied.
2000 census
As of the census of 2000, there were 128,012 people, 49,683 households, and 31,946 families residing in the county. The population density was 226 people per square mile (87/km²). There were 51,759 housing units at an average density of 91 per square mile (35/km²). The racial makeup of the county was 88.42% White, 7.95% Black or African American, 0.18% Native American, 0.98% Asian, 0.04% Pacific Islander, 0.93% from other races, and 1.49% from two or more races. 1.84% of the population were Hispanic or Latino of any race.
There were 49,683 households out of which 29.50% had children under the age of 18 living with them, 50.20% were married couples living together, 10.80% had a female householder with no husband present, and 35.70% were non-families. 27.10% of all households were made up of individuals and 10.90% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.97.
Age spread: 23.10% under the age of 18, 15.70% from 18 to 24, 25.20% from 25 to 44, 22.00% from 45 to 64, and 14.00% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 92.30 males. For every 100 females age 18 and over, there were 88.80 males.
The median income for a household in the county was $37,266, and the median income for a family was $47,398. Males had a median income of $33,138 versus $23,394 for females. The per capita income for the county was $18,885. About 7.90% of families and 13.10% of the population were below the poverty line, including 14.40% of those under age 18 and 8.90% of those age 65 or over.
Census-designated place
Other unincorporated communities
Townships
Black Hawk County is divided into seventeen townships:
Population ranking
The population ranking of the following table is based on the 2010 census of Black Hawk County.
† county seat