Sample of Black Hawk Communities
The following are some of the communities located in Black Hawk County:
| Community | 2009
Population | 2000
Population | Change
(2009 vs. 2000) |
| Waterloo | 66,761 | 68,747 | 2.89% decrease |
| Cedar Falls | 38,714 | 36,145 | 7.11% increase |
| Evansdale | 5,068 | 4,526 | 11.98% increase |
| La Porte City | 2,305 | 2,275 | 1.32% increase |
| Hudson | 2,201 | 2,117 | 3.97% increase |
| Elk Run Heights | 1,081 | 1,052 | 2.76% increase |
| Janesville | 876 | 829 | 5.67% increase |
| Dunkerton | 815 | 749 | 8.81% increase |
| Gilbertville | 742 | 767 | 3.26% decrease |
| Raymond | 735 | 537 | 36.87% increase |
Counties Neighboring Black Hawk
The following counties adjoin and form the boundaries of Black Hawk:
| County | Direction | 2009
Population | 2000
Population | Change
(2009 vs. 2000) |
| Benton |  SE | 26,734 | 25,308 | 5.63% |
| Bremer |  N | 23,460 | 23,325 | 0.58% |
| Buchanan |  E | 20,910 | 21,093 | -0.87% |
| Butler |  NW | 14,341 | 15,305 | -6.3% |
| Fayette |  NE | 20,164 | 22,008 | -8.38% |
| Grundy |  W | 12,177 | 12,369 | -1.55% |
| Tama |  S | 17,377 | 18,103 | -4.01% |
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