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Sangamon County, IL (shown in white) has 868.24 mi² of land area and 8.78 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 498.7' to a high of 698.8', with a weighted average of 596.7' above sea level.
Temperatures range from average lows around 18.8°F to average highs around 86.4°F. A year-round daily temperature averages 53.5°F. Average annual precipation is 41.2". 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 Sangamon County is 197,224 with 84,775 households. These households are spread across 26 unique municipalties (not all shown).
