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Shelby County, IA (shown in white) has 590.78 mi² of land area and 0.57 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 1,148.3' to a high of 1,502.6', with a weighted average of 1,335.5' above sea level.
Temperatures range from average lows around 10°F to average highs around 85.4°F. A year-round daily temperature averages 48.4°F. Average annual precipation is 36.9". 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 Shelby County is 11,900 with 5,053 households. These households are spread across 12 unique municipalties (not all shown).
