Black Hawk County, Iowa
Rank City/Town/etc Municipal type Population ( 2010 Census )
1 † Waterloo City 68,406
2 Cedar Falls City 39,260
3 Evansdale City 4,751
4 Jesup ( mostly in Buchanan County ) City 2,520
5 La Porte City City 2,285
6 Hudson City 2,282
7 Elk Run Heights City 1,117
8 Janesville ( mostly in Bremer County ) City 930
9 Washburn CDP 876
10 Dunkerton City 852
11 Raymond City 788
12 Gilbertville City 712
Communities -- Population ranking
The population ranking of the following table is based on the 2010 census of Black Hawk County . [ 13 ] † county seat
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. Black Hawk County is part of the Waterloo-Cedar Falls, IA Metropolitan Statistical Area.