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About the map

Ohio Map Extent

This Ohio county map displays its 88 counties. Ohio’s 88 counties rank as 13th highest out of all states. The state capital, Columbus is located in Franklin, Ohio. This is the most populated county with over 1.3 million residents.

In fact, both Franklin County and Cuyahoga County are in the top 50 for the highest population in the United States. The least populated county in Ohio is Vinton County with just over 13,000 residents.

For size, counties in Ohio are quite uniform in area. They really don’t have any stand-outs for size and range anywhere between 200 to 750 square miles. While Lake County is the smallest county in Ohio, Ashtabula County is the largest.

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Ohio county list

County Name Population (2020 est) County Map Area (sq mi) Locator Map FIPS Code
Adams County 27,531
Adams County Map Ohio
Adams County
589.7
Adams County Map Ohio Locator
Adams County Map
39001
Allen County 101,980
Allen County Map Ohio
Allen County
406.9
Allen County Map Ohio Locator
Allen County Map
39003
Ashland County 53,362
Ashland County Map Ohio
Ashland County
426.8
Ashland County Map Ohio Locator
Ashland County Map
39005
Ashtabula County 96,513
Ashtabula County Map Ohio
Ashtabula County
709.2
Ashtabula County Map Ohio Locator
Ashtabula County Map
39007
Athens County 65,481
Athens County Map Ohio
Athens County
508.5
Athens County Map Ohio Locator
Athens County Map
39009
Auglaize County 45,680
Auglaize County Map Ohio
Auglaize County
401.9
Auglaize County Map Ohio Locator
Auglaize County Map
39011
Belmont County 65,932
Belmont County Map Ohio
Belmont County
544
Belmont County Map Ohio Locator
Belmont County Map
39013
Brown County 43,414
Brown County Map Ohio
Brown County
495.4
Brown County Map Ohio Locator
Brown County Map
39015
Butler County 385,648
Butler County Map Ohio
Butler County
469.6
Butler County Map Ohio Locator
Butler County Map
39017
Carroll County 26,897
Carroll County Map Ohio
Carroll County
399
Carroll County Map Ohio Locator
Carroll County Map
39019
Champaign County 38,960
Champaign County Map Ohio
Champaign County
429.8
Champaign County Map Ohio Locator
Champaign County Map
39021
Clark County 133,593
Clark County Map Ohio
Clark County
401.6
Clark County Map Ohio Locator
Clark County Map
39023
Clermont County 207,449
Clermont County Map Ohio
Clermont County
459.8
Clermont County Map Ohio Locator
Clermont County Map
39025
Clinton County 41,921
Clinton County Map Ohio
Clinton County
412.2
Clinton County Map Ohio Locator
Clinton County Map
39027
Columbiana County 101,118
Columbiana County Map Ohio
Columbiana County
535.6
Columbiana County Map Ohio Locator
Columbiana County Map
39029
Coshocton County 36,449
Coshocton County Map Ohio
Coshocton County
567.5
Coshocton County Map Ohio Locator
Coshocton County Map
39031
Crawford County 41,338
Crawford County Map Ohio
Crawford County
402.7
Crawford County Map Ohio Locator
Crawford County Map
39033
Cuyahoga County 1,227,883
Cuyahoga County Map Ohio
Cuyahoga County
459.5
Cuyahoga County Map Ohio Locator
Cuyahoga County Map
39035
Darke County 51,205
Darke County Map Ohio
Darke County
599.8
Darke County Map Ohio Locator
Darke County Map
39037
Defiance County 37,778
Defiance County Map Ohio
Defiance County
414.2
Defiance County Map Ohio Locator
Defiance County Map
39039
Delaware County 213,554
Delaware County Map Ohio
Delaware County
457.3
Delaware County Map Ohio Locator
Delaware County Map
39041
Erie County 73,719
Erie County Map Ohio
Erie County
255.2
Erie County Map Ohio Locator
Erie County Map
39043
Fairfield County 159,709
Fairfield County Map Ohio
Fairfield County
508.6
Fairfield County Map Ohio Locator
Fairfield County Map
39045
Fayette County 28,579
Fayette County Map Ohio
Fayette County
407
Fayette County Map Ohio Locator
Fayette County Map
39047
Franklin County 1,324,624
Franklin County Map Ohio
Franklin County
543.5
Franklin County Map Ohio Locator
Franklin County Map
39049
Fulton County 41,889
Fulton County Map Ohio
Fulton County
407
Fulton County Map Ohio Locator
Fulton County Map
39051
Gallia County 29,802
Gallia County Map Ohio
Gallia County
473.4
Gallia County Map Ohio Locator
Gallia County Map
39053
Geauga County 93,271
Geauga County Map Ohio
Geauga County
408.3
Geauga County Map Ohio Locator
Geauga County Map
39055
Greene County 170,122
Greene County Map Ohio
Greene County
416.2
Greene County Map Ohio Locator
Greene County Map
39057
Guernsey County 38,779
Guernsey County Map Ohio
Guernsey County
528.3
Guernsey County Map Ohio Locator
Guernsey County Map
39059
Hamilton County 817,985
Hamilton County Map Ohio
Hamilton County
413.5
Hamilton County Map Ohio Locator
Hamilton County Map
39061
Hancock County 75,407
Hancock County Map Ohio
Hancock County
533.7
Hancock County Map Ohio Locator
Hancock County Map
39063
Hardin County 31,469
Hardin County Map Ohio
Hardin County
470.6
Hardin County Map Ohio Locator
Hardin County Map
39065
Harrison County 15,014
Harrison County Map Ohio
Harrison County
410.8
Harrison County Map Ohio Locator
Harrison County Map
39067
Henry County 26,904
Henry County Map Ohio
Henry County
419.8
Henry County Map Ohio Locator
Henry County Map
39069
Highland County 43,304
Highland County Map Ohio
Highland County
558
Highland County Map Ohio Locator
Highland County Map
39071
Hocking County 28,095
Hocking County Map Ohio
Hocking County
423.6
Hocking County Map Ohio Locator
Hocking County Map
39073
Holmes County 44,004
Holmes County Map Ohio
Holmes County
424
Holmes County Map Ohio Locator
Holmes County Map
39075
Huron County 57,979
Huron County Map Ohio
Huron County
496
Huron County Map Ohio Locator
Huron County Map
39077
Jackson County 32,493
Jackson County Map Ohio
Jackson County
421.5
Jackson County Map Ohio Locator
Jackson County Map
39079
Jefferson County 64,939
Jefferson County Map Ohio
Jefferson County
412.9
Jefferson County Map Ohio Locator
Jefferson County Map
39081
Knox County 62,423
Knox County Map Ohio
Knox County
529.6
Knox County Map Ohio Locator
Knox County Map
39083
Lake County 229,569
Lake County Map Ohio
Lake County
231.2
Lake County Map Ohio Locator
Lake County Map
39085
Lawrence County 59,091
Lawrence County Map Ohio
Lawrence County
459.3
Lawrence County Map Ohio Locator
Lawrence County Map
39087
Licking County 178,100
Licking County Map Ohio
Licking County
687.5
Licking County Map Ohio Locator
Licking County Map
39089
Logan County 45,326
Logan County Map Ohio
Logan County
466.8
Logan County Map Ohio Locator
Logan County Map
39091
Lorain County 312,172
Lorain County Map Ohio
Lorain County
493.5
Lorain County Map Ohio Locator
Lorain County Map
39093
Lucas County 428,294
Lucas County Map Ohio
Lucas County
347.1
Lucas County Map Ohio Locator
Lucas County Map
39095
Madison County 44,559
Madison County Map Ohio
Madison County
467.5
Madison County Map Ohio Locator
Madison County Map
39097
Mahoning County 226,075
Mahoning County Map Ohio
Mahoning County
423.7
Mahoning County Map Ohio Locator
Mahoning County Map
39099
Marion County 64,820
Marion County Map Ohio
Marion County
404.1
Marion County Map Ohio Locator
Marion County Map
39101
Medina County 180,912
Medina County Map Ohio
Medina County
423.2
Medina County Map Ohio Locator
Medina County Map
39103
Meigs County 22,678
Meigs County Map Ohio
Meigs County
436.2
Meigs County Map Ohio Locator
Meigs County Map
39105
Mercer County 41,274
Mercer County Map Ohio
Mercer County
473.4
Mercer County Map Ohio Locator
Mercer County Map
39107
Miami County 107,516
Miami County Map Ohio
Miami County
409.6
Miami County Map Ohio Locator
Miami County Map
39109
Monroe County 13,586
Monroe County Map Ohio
Monroe County
458.9
Monroe County Map Ohio Locator
Monroe County Map
39111
Montgomery County 531,610
Montgomery County Map Ohio
Montgomery County
464.4
Montgomery County Map Ohio Locator
Montgomery County Map
39113
Morgan County 14,305
Morgan County Map Ohio
Morgan County
421.9
Morgan County Map Ohio Locator
Morgan County Map
39115
Morrow County 35,411
Morrow County Map Ohio
Morrow County
407.2
Morrow County Map Ohio Locator
Morrow County Map
39117
Muskingum County 86,020
Muskingum County Map Ohio
Muskingum County
672.6
Muskingum County Map Ohio Locator
Muskingum County Map
39119
Noble County 14,364
Noble County Map Ohio
Noble County
404.6
Noble County Map Ohio Locator
Noble County Map
39121
Ottawa County 40,253
Ottawa County Map Ohio
Ottawa County
260.3
Ottawa County Map Ohio Locator
Ottawa County Map
39123
Paulding County 18,648
Paulding County Map Ohio
Paulding County
418.8
Paulding County Map Ohio Locator
Paulding County Map
39125
Perry County 36,215
Perry County Map Ohio
Perry County
412.4
Perry County Map Ohio Locator
Perry County Map
39127
Pickaway County 58,658
Pickaway County Map Ohio
Pickaway County
506.6
Pickaway County Map Ohio Locator
Pickaway County Map
39129
Pike County 27,695
Pike County Map Ohio
Pike County
444
Pike County Map Ohio Locator
Pike County Map
39131
Portage County 162,583
Portage County Map Ohio
Portage County
506.4
Portage County Map Ohio Locator
Portage County Map
39133
Preble County 40,836
Preble County Map Ohio
Preble County
426.4
Preble County Map Ohio Locator
Preble County Map
39135
Putnam County 33,654
Putnam County Map Ohio
Putnam County
484.3
Putnam County Map Ohio Locator
Putnam County Map
39137
Richland County 120,891
Richland County Map Ohio
Richland County
500.1
Richland County Map Ohio Locator
Richland County Map
39139
Ross County 76,420
Ross County Map Ohio
Ross County
692.9
Ross County Map Ohio Locator
Ross County Map
39141
Sandusky County 58,351
Sandusky County Map Ohio
Sandusky County
411.7
Sandusky County Map Ohio Locator
Sandusky County Map
39143
Scioto County 74,347
Scioto County Map Ohio
Scioto County
619.1
Scioto County Map Ohio Locator
Scioto County Map
39145
Seneca County 54,938
Seneca County Map Ohio
Seneca County
552.8
Seneca County Map Ohio Locator
Seneca County Map
39147
Shelby County 48,337
Shelby County Map Ohio
Shelby County
410.7
Shelby County Map Ohio Locator
Shelby County Map
39149
Stark County 369,772
Stark County Map Ohio
Stark County
580.4
Stark County Map Ohio Locator
Stark County Map
39151
Summit County 538,866
Summit County Map Ohio
Summit County
419.8
Summit County Map Ohio Locator
Summit County Map
39153
Trumbull County 196,800
Trumbull County Map Ohio
Trumbull County
635.5
Trumbull County Map Ohio Locator
Trumbull County Map
39155
Tuscarawas County 91,776
Tuscarawas County Map Ohio
Tuscarawas County
571.5
Tuscarawas County Map Ohio Locator
Tuscarawas County Map
39157
Union County 60,021
Union County Map Ohio
Union County
436.8
Union County Map Ohio Locator
Union County Map
39159
Van Wert County 28,159
Van Wert County Map Ohio
Van Wert County
410.4
Van Wert County Map Ohio Locator
Van Wert County Map
39161
Vinton County 12,972
Vinton County Map Ohio
Vinton County
415
Vinton County Map Ohio Locator
Vinton County Map
39163
Warren County 238,412
Warren County Map Ohio
Warren County
407.1
Warren County Map Ohio Locator
Warren County Map
39165
Washington County 59,652
Washington County Map Ohio
Washington County
644.3
Washington County Map Ohio Locator
Washington County Map
39167
Wayne County 115,694
Wayne County Map Ohio
Wayne County
556.9
Wayne County Map Ohio Locator
Wayne County Map
39169
Williams County 36,565
Williams County Map Ohio
Williams County
423.1
Williams County Map Ohio Locator
Williams County Map
39171
Wood County 131,113
Wood County Map Ohio
Wood County
620.6
Wood County Map Ohio Locator
Wood County Map
39173
Wyandot County 21,711
Wyandot County Map Ohio
Wyandot County
407.6
Wyandot County Map Ohio Locator
Wyandot County Map
39175

References

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