Ohio Counties (88) - US Census Bureau 2025 cartographic boundaries
The 88 counties of Ohio. Geometry: U.S. Census Bureau, 2025 Cartographic Boundary File, County and Equivalent for United States, 1:500,000 (cb_2025_us_county_500k), NAD83 (EPSG:4269). Generalized for small-scale mapping; not a survey boundary.

Adams
Adams County. FIPS 39001. Land 1512221260 sq m, water 6250109 sq m.
Adams County
Ohio

Allen
Allen County. FIPS 39003. Land 1042587385 sq m, water 11152061 sq m.
Allen County
Ohio

Ashland
Ashland County. FIPS 39005. Land 1095528195 sq m, water 9969109 sq m.
Ashland County
Ohio

Ashtabula
Ashtabula County. FIPS 39007. Land 1819252266 sq m, water 1724330055 sq m.
Ashtabula County

Athens
Athens County. FIPS 39009. Land 1304429458 sq m, water 12364206 sq m.
Athens County

Auglaize
Auglaize County. FIPS 39011. Land 1039590221 sq m, water 1339586 sq m.
Auglaize County

Belmont
Belmont County. FIPS 39013. Land 1378321843 sq m, water 23691593 sq m.
Belmont County

Brown
Brown County. FIPS 39015. Land 1267932495 sq m, water 8858347 sq m.
Brown County

Butler
Butler County. FIPS 39017. Land 1208310917 sq m, water 9155717 sq m.
Butler County

Carroll
Carroll County. FIPS 39019. Land 1022198379 sq m, water 11183048 sq m.
Carroll County

Champaign
Champaign County. FIPS 39021. Land 1111045219 sq m, water 2180178 sq m.
Champaign County

Clark
Clark County. FIPS 39023. Land 1025322039 sq m, water 14608568 sq m.
Clark County

Clermont
Clermont County. FIPS 39025. Land 1172125416 sq m, water 19874908 sq m.
Clermont County

Clinton
Clinton County. FIPS 39027. Land 1058609499 sq m, water 9329331 sq m.
Clinton County

Columbiana
Columbiana County. FIPS 39029. Land 1377692484 sq m, water 7277033 sq m.
Columbiana County

Coshocton
Coshocton County. FIPS 39031. Land 1460521586 sq m, water 9127208 sq m.
Coshocton County

Crawford
Crawford County. FIPS 39033. Land 1040619655 sq m, water 2359514 sq m.
Crawford County

Cuyahoga
Cuyahoga County. FIPS 39035. Land 1184224634 sq m, water 2041679906 sq m.
Cuyahoga County

Darke
Darke County. FIPS 39037. Land 1549077543 sq m, water 4244897 sq m.
Darke County

Defiance
Defiance County. FIPS 39039. Land 1065623070 sq m, water 7100811 sq m.
Defiance County

Delaware
Delaware County. FIPS 39041. Land 1147751355 sq m, water 36699318 sq m.
Delaware County

Erie
Erie County. FIPS 39043. Land 650833153 sq m, water 969939816 sq m.
Erie County

Fairfield
Fairfield County. FIPS 39045. Land 1306299917 sq m, water 10869534 sq m.
Fairfield County

Fayette
Fayette County. FIPS 39047. Land 1052469886 sq m, water 1694038 sq m.
Fayette County

Franklin
Franklin County. FIPS 39049. Land 1378952503 sq m, water 29018708 sq m.
Franklin County

Fulton
Fulton County. FIPS 39051. Land 1050110446 sq m, water 4579039 sq m.
Fulton County

Gallia
Gallia County. FIPS 39053. Land 1208305869 sq m, water 12087309 sq m.
Gallia County

Geauga
Geauga County. FIPS 39055. Land 1037134792 sq m, water 20674141 sq m.
Geauga County

Greene
Greene County. FIPS 39057. Land 1071302625 sq m, water 6798109 sq m.
Greene County

Guernsey
Guernsey County. FIPS 39059. Land 1352599514 sq m, water 15666081 sq m.
Guernsey County

Hamilton
Hamilton County. FIPS 39061. Land 1050120459 sq m, water 18612564 sq m.
Hamilton County

Hancock
Hancock County. FIPS 39063. Land 1376122056 sq m, water 6024245 sq m.
Hancock County

Hardin
Hardin County. FIPS 39065. Land 1218033118 sq m, water 630279 sq m.
Hardin County

Harrison
Harrison County. FIPS 39067. Land 1042032639 sq m, water 21847163 sq m.
Harrison County

Henry
Henry County. FIPS 39069. Land 1077469004 sq m, water 9680060 sq m.
Henry County

Highland
Highland County. FIPS 39071. Land 1432479977 sq m, water 12194983 sq m.
Highland County

Hocking
Hocking County. FIPS 39073. Land 1091289822 sq m, water 5955974 sq m.
Hocking County

Holmes
Holmes County. FIPS 39075. Land 1094566304 sq m, water 3694365 sq m.
Holmes County

Huron
Huron County. FIPS 39077. Land 1274906336 sq m, water 8626249 sq m.
Huron County

Jackson
Jackson County. FIPS 39079. Land 1088598927 sq m, water 3167846 sq m.
Jackson County

Jefferson
Jefferson County. FIPS 39081. Land 1057037098 sq m, water 7335056 sq m.
Jefferson County

Knox
Knox County. FIPS 39083. Land 1361036423 sq m, water 10721050 sq m.
Knox County

Lake
Lake County. FIPS 39085. Land 594129620 sq m, water 1942308103 sq m.
Lake County

Lawrence
Lawrence County. FIPS 39087. Land 1174285730 sq m, water 10026362 sq m.
Lawrence County

Licking
Licking County. FIPS 39089. Land 1767486181 sq m, water 12753670 sq m.
Licking County

Logan
Logan County. FIPS 39091. Land 1187529021 sq m, water 21588083 sq m.
Logan County

Lorain
Lorain County. FIPS 39093. Land 1270483158 sq m, water 1119495059 sq m.
Lorain County

Lucas
Lucas County. FIPS 39095. Land 879736348 sq m, water 663476626 sq m.
Lucas County

Madison
Madison County. FIPS 39097. Land 1208715720 sq m, water 2129636 sq m.
Madison County

Mahoning
Mahoning County. FIPS 39099. Land 1065833169 sq m, water 35542847 sq m.
Mahoning County

Marion
Marion County. FIPS 39101. Land 1045855309 sq m, water 908577 sq m.
Marion County

Medina
Medina County. FIPS 39103. Land 1091573519 sq m, water 4193803 sq m.
Medina County

Meigs
Meigs County. FIPS 39105. Land 1113957874 sq m, water 7519818 sq m.
Meigs County

Mercer
Mercer County. FIPS 39107. Land 1197732209 sq m, water 28431995 sq m.
Mercer County

Miami
Miami County. FIPS 39109. Land 1053040429 sq m, water 7924793 sq m.
Miami County

Monroe
Monroe County. FIPS 39111. Land 1179949519 sq m, water 4488375 sq m.
Monroe County

Montgomery
Montgomery County. FIPS 39113. Land 1194897299 sq m, water 7492172 sq m.
Montgomery County

Morgan
Morgan County. FIPS 39115. Land 1078538280 sq m, water 13868572 sq m.
Morgan County

Morrow
Morrow County. FIPS 39117. Land 1051881044 sq m, water 2819351 sq m.
Morrow County

Muskingum
Muskingum County. FIPS 39119. Land 1721165819 sq m, water 20823923 sq m.
Muskingum County

Noble
Noble County. FIPS 39121. Land 1030735773 sq m, water 16984489 sq m.
Noble County

Ottawa
Ottawa County. FIPS 39123. Land 659630330 sq m, water 855711441 sq m.
Ottawa County

Paulding
Paulding County. FIPS 39125. Land 1078563693 sq m, water 6242939 sq m.
Paulding County

Perry
Perry County. FIPS 39127. Land 1056560150 sq m, water 11774320 sq m.
Perry County

Pickaway
Pickaway County. FIPS 39129. Land 1298270767 sq m, water 13694541 sq m.
Pickaway County

Pike
Pike County. FIPS 39131. Land 1140325073 sq m, water 9566957 sq m.
Pike County

Portage
Portage County. FIPS 39133. Land 1262500481 sq m, water 43060220 sq m.
Portage County

Preble
Preble County. FIPS 39135. Land 1098741137 sq m, water 6062721 sq m.
Preble County

Putnam
Putnam County. FIPS 39137. Land 1249784142 sq m, water 4544339 sq m.
Putnam County

Richland
Richland County. FIPS 39139. Land 1282631596 sq m, water 12560134 sq m.
Richland County

Ross
Ross County. FIPS 39141. Land 1784931095 sq m, water 9994410 sq m.
Ross County

Sandusky
Sandusky County. FIPS 39143. Land 1057352836 sq m, water 24511837 sq m.
Sandusky County

Scioto
Scioto County. FIPS 39145. Land 1580293393 sq m, water 16072294 sq m.
Scioto County

Seneca
Seneca County. FIPS 39147. Land 1427151724 sq m, water 4576816 sq m.
Seneca County

Shelby
Shelby County. FIPS 39149. Land 1055914218 sq m, water 7811001 sq m.
Shelby County

Stark
Stark County. FIPS 39151. Land 1489087345 sq m, water 13606591 sq m.
Stark County

Summit
Summit County. FIPS 39153. Land 1068850952 sq m, water 18982378 sq m.
Summit County

Trumbull
Trumbull County. FIPS 39155. Land 1599556452 sq m, water 47773885 sq m.
Trumbull County

Tuscarawas
Tuscarawas County. FIPS 39157. Land 1470097268 sq m, water 10250140 sq m.
Tuscarawas County

Union
Union County. FIPS 39159. Land 1118131407 sq m, water 13415724 sq m.
Union County

Van Wert
Van Wert County. FIPS 39161. Land 1059692858 sq m, water 3287921 sq m.
Van Wert County

Vinton
Vinton County. FIPS 39163. Land 1068008168 sq m, water 6781751 sq m.
Vinton County

Warren
Warren County. FIPS 39165. Land 1039659283 sq m, water 15711767 sq m.
Warren County

Washington
Washington County. FIPS 39167. Land 1637293170 sq m, water 20665052 sq m.
Washington County

Wayne
Wayne County. FIPS 39169. Land 1437488513 sq m, water 5040384 sq m.
Wayne County

Williams
Williams County. FIPS 39171. Land 1089504761 sq m, water 6298923 sq m.
Williams County

Wood
Wood County. FIPS 39173. Land 1598454612 sq m, water 8706879 sq m.
Wood County

Wyandot
Wyandot County. FIPS 39175. Land 1053812244 sq m, water 1783532 sq m.
Wyandot County