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Mahaska County, IA (shown in white) has 570.85 mi² of land area and 2.55 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 646.3' to a high of 941.6', with a weighted average of 806.8' above sea level.
Temperatures range from average lows around 12°F to average highs around 86.6°F. A year-round daily temperature averages 50.2°F. Average annual precipation is 41.8". With these temperatures and precipation, the majority of the county scores as an 5B 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 Mahaska County is 22,028 with 8,738 households. These households are spread across 9 unique municipalties (not all shown).
