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De Witt County, IL (shown in white) has 397.56 mi² of land area and 7.53 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 626.6' to a high of 810.4', with a weighted average of 722.1' above sea level.
Temperatures range from average lows around 16.5°F to average highs around 85.8°F. A year-round daily temperature averages 52.3°F. Average annual precipation is 40.9". 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 De Witt County is 15,443 with 6,594 households. These households are spread across 8 unique municipalties (not all shown).
