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Municipal Boundaries

Overview

Madison County, IL (shown in white) has 715.52 mi² of land area and 24.53 mi² of water resources. The county is bordered by:


The county's elevations range from a low of 387.1' to a high of 659.5', with a weighted average of 512.5' above sea level.

Temperatures range from average lows around 21.2°F to average highs around 89°F. A year-round daily temperature averages 56.5°F. Average annual precipation is 46.3". 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 Madison County is 264,426 with 108,056 households. These households are spread across 32 unique municipalties (not all shown).