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Morgan County, IL (shown in white) has 568.96 mi² of land area and 3.5 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 429.8' to a high of 800.5', with a weighted average of 615.5' above sea level.
Temperatures range from average lows around 17.7°F to average highs around 87°F. A year-round daily temperature averages 53°F. Average annual precipation is 42". With these temperatures and precipation, the majority of the county scores as an 6A 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 Morgan County is 32,367 with 13,286 households. These households are spread across 12 unique municipalties (not all shown).