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Buchanan County, IA (shown in white) has 571.08 mi² of land area and 2.02 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 777.6' to a high of 1,154.8', with a weighted average of 987' above sea level.
Temperatures range from average lows around 7.2°F to average highs around 82.9°F. A year-round daily temperature averages 45.8°F. Average annual precipation is 41". 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 Buchanan County is 20,892 with 8,331 households. These households are spread across 11 unique municipalties (not all shown).
