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Black Hawk County, IA (shown in white) has 565.76 mi² of land area and 6.92 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 780.8' to a high of 1,049.9', with a weighted average of 921.8' above sea level.
Temperatures range from average lows around 9.4°F to average highs around 85.4°F. A year-round daily temperature averages 48.4°F. Average annual precipation is 40.6". With these temperatures and precipation, the majority of the county scores as an 5A using the USDA Plant Hardiness Zone Map (the standard by which gardeners and growers can determine which perennial plants are most likely to thrive in a location).
The estimated population of Black Hawk County is 131,901 with 54,524 households. These households are spread across 10 unique municipalties (not all shown).
