Jefferson County, MO

County

14,694 species observed across 8 groups · Pop. 226.9K

Ecoregions

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Species observed

Birds· 428 species

Mammals· 94 species

Plants· 4,050 species

Reptiles & Amphibians· 161 species

Fish· 255 species

Insects· 6,835 species

Other Invertebrates· 856 species

Fungi & Lichens· 2,015 species

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Part of

StateMissouriPop. 6.2M

Cities in Jefferson County

Arnold, MOPop. 20.9KEureka, MOPop. 11.8KFestus, MOPop. 12.7K