Massachusetts, US
State46,722 species observed across 8 groups · Pop. 7.0M
Ecoregions
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Species observed
Birds· 1,002 species
Mammals· 315 species
Plants· 10,992 species
Reptiles & Amphibians· 394 species
Fish· 952 species
Insects· 20,471 species
Other Invertebrates· 3,594 species
Fungi & Lichens· 9,002 species
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Counties in Massachusetts
Barnstable County, MAPop. 228.0KBerkshire County, MAPop. 128.6KBristol County, MAPop. 576.8KDukes County, MAPop. 20.6KEssex County, MAPop. 807.8KFranklin County, MAPop. 70.9KHampden County, MAPop. 464.3KHampshire County, MAPop. 146.6KMiddlesex County, MAPop. 1.6MNantucket County, MAPop. 14.2KNorfolk County, MAPop. 724.6KPlymouth County, MAPop. 530.2KSuffolk County, MAPop. 797.2KWorcester County, MAPop. 859.7K