Black Hawk County, Iowa

Black Hawk County
Black Hawk County Courthouse in Waterloo
Official logo of Black Hawk County
Map of Iowa highlighting Black Hawk County
Location within the U.S. state of Iowa
Map of the United States highlighting Iowa
Iowa's location within the U.S.
Coordinates: 42°28′08″N 92°18′19″W / 42.468888888889°N 92.305277777778°W / 42.468888888889; -92.305277777778
Country United States
State Iowa
Founded1843
Named forBlack Hawk
SeatWaterloo
Largest cityWaterloo
Area
 • Total573 sq mi (1,480 km2)
 • Land566 sq mi (1,470 km2)
 • Water6.9 sq mi (18 km2)  1.2%
Population
 (2020)
 • Total131,144
 • Density230/sq mi (88/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitewww.blackhawkcounty.iowa.gov

Black Hawk County is a county in the northeastern part of the U.S. state of Iowa. As of the 2020 census, the population was 131,144,[1] making it Iowa's fifth-most populous county. The county seat is Waterloo.[2]

Black Hawk County is part of the Waterloo – Cedar Falls metropolitan area.[3]

  1. ^ "2020 Census State Redistricting Data". census.gov. United states Census Bureau. Retrieved August 12, 2021.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. ^ United States Office of Management and Budget. "Update of Statistical Area Definitions and Guidance on Their Uses" (PDF). pp. 5, 36. Archived from the original (PDF) on May 14, 2006. Retrieved July 21, 2006.