Black Hawk County | |
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Black Hawk County Courthouse in Waterloo | |
![]() Location within the U.S. state of Iowa | |
![]() Iowa's location within the U.S. | |
Coordinates: 42°28′08″N 92°18′19″W / 42.468888888889°N 92.305277777778°W | |
Country | ![]() |
State | ![]() |
Founded | 1843 |
Named for | Black Hawk |
Seat | Waterloo |
Largest city | Waterloo |
Area | |
• Total | 573 sq mi (1,480 km2) |
• Land | 566 sq mi (1,470 km2) |
• Water | 6.9 sq mi (18 km2) 1.2% |
Population (2020) | |
• Total | 131,144 |
• Density | 230/sq mi (88/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 2nd |
Website | www |
Black Hawk County is a county in the northeastern part of 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]