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Brown County, IL (shown in white) has 305.73 mi² of land area and 1.6 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 429.8' to a high of 797.2', with a weighted average of 621.1' above sea level.
Temperatures range from average lows around 16.7°F to average highs around 87.3°F. A year-round daily temperature averages 52.6°F. Average annual precipation is 42". 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 Brown County is 6,187 with 1,933 households. These households are spread across 4 unique municipalties (not all shown).
