US Counties in which the eastern Massasauga, is known to or is believed to occur:

State County
Illinois Bond
Illinois Clinton
Illinois Cook
Illinois Fayette
Illinois Knox
Illinois Lake
Illinois Madison
Illinois Piatt
Illinois Warren
Illinois Will
Indiana Allen
Indiana Carroll
Indiana Elkhart
Indiana Fulton
Indiana Kosciusko
Indiana Lagrange
Indiana La Porte
Indiana Marshall
Indiana Noble
Indiana Porter
Indiana Pulaski
Indiana Steuben
Indiana St. Joseph
Indiana Tippecanoe
Iowa Black Hawk
Iowa Bremer
Iowa Buchanan
Iowa Chickasaw
Iowa Clinton
Iowa Louisa
Iowa Muscatine
Iowa Scott
Michigan Alcona
Michigan Allegan
Michigan Alpena
Michigan Arenac
Michigan Barry
Michigan Berrien
Michigan Calhoun
Michigan Cass
Michigan Cheboygan
Michigan Clinton
Michigan Crawford
Michigan Eaton
Michigan Genesee
Michigan Grand Traverse
Michigan Hillsdale
Michigan Iosco
Michigan Jackson
Michigan Kalamazoo
Michigan Kalkaska
Michigan Kent
Michigan Lake
Michigan Lapeer
Michigan Lenawee
Michigan Livingston
Michigan Mackinac
Michigan Macomb
Michigan Manistee
Michigan Mason
Michigan Midland
Michigan Missaukee
Michigan Montcalm
Michigan Muskegon
Michigan Newaygo
Michigan Oakland
Michigan Presque Isle
Michigan Roscommon
Michigan Saginaw
Michigan St. Joseph
Michigan Van Buren
Michigan Washtenaw
Michigan Wayne
Minnesota Houston
Minnesota Wabasha
Minnesota Winona
New York Genesee
New York Onondaga
Ohio Ashtabula
Ohio Champaign
Ohio Clark
Ohio Clinton
Ohio Columbiana
Ohio Crawford
Ohio Erie
Ohio Fairfield
Ohio Fayette
Ohio Greene
Ohio Hardin
Ohio Huron
Ohio Licking
Ohio Logan
Ohio Lucas
Ohio Mahoning
Ohio Marion
Ohio Montgomery
Ohio Ottawa
Ohio Portage
Ohio Preble
Ohio Richland
Ohio Sandusky
Ohio Trumbull
Ohio Warren
Ohio Wayne
Ohio Wyandot
Pennsylvania Butler
Pennsylvania Mercer
Pennsylvania Venango
Wisconsin Buffalo
Wisconsin Crawford
Wisconsin Jackson
Wisconsin Juneau
Wisconsin La Crosse
Wisconsin Monroe
Wisconsin Pepin
Wisconsin Rock
Wisconsin Trempealeau
Wisconsin Walworth
Wisconsin Wood

This report contains Counties in which this species is known to or is believed to occur. If you are looking for the Section 7 range (for Section 7 Consultations), please visit the IPaC application.