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Counties in Ohio, United States
County Name
|
Population
|
Water Area Percentage
|
Land Area Percentage
|
Adams County, OH
|
27,330
|
0.32%
|
99.68%
|
Allen County, OH
|
108,473
|
0.6%
|
99.4%
|
Ashland County, OH
|
52,523
|
0.58%
|
99.42%
|
Ashtabula County, OH
|
102,728
|
48.67%
|
51.33%
|
Athens County, OH
|
62,223
|
0.35%
|
99.65%
|
Auglaize County, OH
|
46,611
|
0.12%
|
99.88%
|
Belmont County, OH
|
70,226
|
0.75%
|
99.25%
|
Brown County, OH
|
42,285
|
0.7%
|
99.3%
|
Butler County, OH
|
332,807
|
0.62%
|
99.38%
|
Carroll County, OH
|
28,836
|
1.09%
|
98.91%
|
Champaign County, OH
|
38,890
|
0.27%
|
99.73%
|
Clark County, OH
|
144,742
|
0.92%
|
99.08%
|
Clermont County, OH
|
177,977
|
1.24%
|
98.76%
|
Clinton County, OH
|
40,543
|
0.34%
|
99.66%
|
Columbiana County, OH
|
112,075
|
0.51%
|
99.49%
|
Coshocton County, OH
|
36,655
|
0.62%
|
99.38%
|
Crawford County, OH
|
46,966
|
0.18%
|
99.82%
|
Cuyahoga County, OH
|
1,393,978
|
63.19%
|
36.81%
|
Darke County, OH
|
53,309
|
0.08%
|
99.92%
|
Defiance County, OH
|
39,500
|
0.73%
|
99.27%
|
Delaware County, OH
|
109,989
|
2.97%
|
97.03%
|
Erie County, OH
|
79,551
|
59.29%
|
40.71%
|
Fairfield County, OH
|
122,759
|
0.69%
|
99.31%
|
Fayette County, OH
|
28,433
|
0.12%
|
99.88%
|
Franklin County, OH
|
1,068,978
|
0.63%
|
99.37%
|
Fulton County, OH
|
42,084
|
0.13%
|
99.87%
|
Gallia County, OH
|
31,069
|
0.5%
|
99.5%
|
Geauga County, OH
|
90,895
|
1.13%
|
98.87%
|
Greene County, OH
|
147,886
|
0.32%
|
99.68%
|
Guernsey County, OH
|
40,792
|
1.21%
|
98.79%
|
Hamilton County, OH
|
845,303
|
1.31%
|
98.69%
|
Hancock County, OH
|
71,295
|
0.42%
|
99.58%
|
Hardin County, OH
|
31,945
|
0.05%
|
99.95%
|
Harrison County, OH
|
15,856
|
1.77%
|
98.23%
|
Henry County, OH
|
29,210
|
0.83%
|
99.17%
|
Highland County, OH
|
40,875
|
0.82%
|
99.18%
|
Hocking County, OH
|
28,241
|
0.2%
|
99.8%
|
Holmes County, OH
|
38,943
|
0.24%
|
99.76%
|
Huron County, OH
|
59,487
|
0.37%
|
99.63%
|
Jackson County, OH
|
32,641
|
0.29%
|
99.71%
|
Jefferson County, OH
|
73,894
|
0.31%
|
99.69%
|
Knox County, OH
|
54,500
|
0.46%
|
99.54%
|
Lake County, OH
|
227,511
|
76.69%
|
23.31%
|
Lawrence County, OH
|
62,319
|
0.51%
|
99.49%
|
Licking County, OH
|
145,491
|
0.27%
|
99.73%
|
Logan County, OH
|
46,005
|
1.79%
|
98.21%
|
Lorain County, OH
|
284,664
|
46.64%
|
53.36%
|
Lucas County, OH
|
455,054
|
42.86%
|
57.14%
|
Madison County, OH
|
40,213
|
0.16%
|
99.84%
|
Mahoning County, OH
|
257,555
|
1.92%
|
98.08%
|
Marion County, OH
|
66,217
|
0.07%
|
99.92%
|
Medina County, OH
|
151,095
|
0.37%
|
99.63%
|
Meigs County, OH
|
23,072
|
0.68%
|
99.32%
|
Mercer County, OH
|
40,924
|
2.12%
|
97.88%
|
Miami County, OH
|
98,868
|
0.53%
|
99.47%
|
Monroe County, OH
|
15,180
|
0.42%
|
99.58%
|
Montgomery County, OH
|
559,062
|
0.58%
|
99.43%
|
Morgan County, OH
|
14,897
|
1%
|
99%
|
Morrow County, OH
|
31,628
|
0.28%
|
99.72%
|
Muskingum County, OH
|
84,585
|
1.18%
|
98.82%
|
Noble County, OH
|
14,058
|
1.38%
|
98.62%
|
Ottawa County, OH
|
40,985
|
56.43%
|
43.57%
|
Paulding County, OH
|
20,293
|
0.63%
|
99.37%
|
Perry County, OH
|
34,078
|
0.68%
|
99.32%
|
Pickaway County, OH
|
52,727
|
0.96%
|
99.04%
|
Pike County, OH
|
27,695
|
0.55%
|
99.45%
|
Portage County, OH
|
152,061
|
2.9%
|
97.1%
|
Preble County, OH
|
42,337
|
0.36%
|
99.64%
|
Putnam County, OH
|
34,726
|
0.07%
|
99.93%
|
Richland County, OH
|
128,852
|
0.69%
|
99.31%
|
Ross County, OH
|
73,345
|
0.66%
|
99.34%
|
Sandusky County, OH
|
61,792
|
2.06%
|
97.94%
|
Scioto County, OH
|
79,195
|
0.62%
|
99.38%
|
Seneca County, OH
|
58,683
|
0.32%
|
99.68%
|
Shelby County, OH
|
47,910
|
0.43%
|
99.57%
|
Stark County, OH
|
378,098
|
0.82%
|
99.18%
|
Summit County, OH
|
542,899
|
1.75%
|
98.25%
|
Trumbull County, OH
|
225,116
|
2.87%
|
97.13%
|
Tuscarawas County, OH
|
90,914
|
0.68%
|
99.32%
|
Union County, OH
|
40,909
|
0.08%
|
99.92%
|
Van Wert County, OH
|
29,659
|
0.1%
|
99.9%
|
Vinton County, OH
|
12,806
|
0.21%
|
99.79%
|
Warren County, OH
|
158,383
|
1.84%
|
98.16%
|
Washington County, OH
|
63,251
|
0.78%
|
99.22%
|
Wayne County, OH
|
111,564
|
0.17%
|
99.83%
|
Williams County, OH
|
39,188
|
0.31%
|
99.69%
|
Wood County, OH
|
121,065
|
0.52%
|
99.48%
|
Wyandot County, OH
|
22,908
|
0.49%
|
99.51%
|
|