Black Hawk County, IA
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            Black Hawk County Population: 128,012 Population Density: 225.7 per square mile Water Area Percentage: 0.84% (4.80 square miles) Land Area Percentage: 99.16% (567.11 square miles) Total Area: 571.91 square miles Housing Units: 51,759 per square mile County Links  | 
        
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				Quick Links Sandy River Reservoir News Sandy River Reservoir Photos Sandy River Reservoir Videos  | 
		

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