Rock County, WI

County

15,653 species observed across 8 groups · Pop. 163.8K

Ecoregions

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Species observed

Birds· 511 species

Mammals· 117 species

Plants· 4,647 species

Reptiles & Amphibians· 128 species

Fish· 196 species

Insects· 8,937 species

Other Invertebrates· 1,067 species

Fungi & Lichens

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Part of

StateWisconsinPop. 5.9M

Cities in Rock County

Beloit, WIPop. 36.7KJanesville, WIPop. 65.7K