Williamson County, IL

County

13,119 species observed across 8 groups · Pop. 67.1K

Ecoregions

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Species observed

Birds· 446 species

Mammals· 103 species

Plants· 4,187 species

Reptiles & Amphibians· 175 species

Fish· 264 species

Insects· 6,940 species

Other Invertebrates· 954 species

Fungi & Lichens

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Part of

StateIllinoisPop. 12.8M

Cities in Williamson County

Herrin, ILPop. 12.3KMarion, ILPop. 16.8K