Ohio / Counties by Population

Ohio Counties by Population

Below are the 88 Ohio counties sorted by population from 1 to 88 . The population data are from the 2020 Census Redistricting dataset. If 2020 Census data are not available for a geography, then the population data are from the Census’ 2019 American Community Survey. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!

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Rank County Population
1 Franklin County 1,323,807
2 Cuyahoga County 1,264,817
3 Hamilton County 830,639
4 Summit County 540,428
5 Montgomery County 537,309
6 Lucas County 431,279
7 Butler County 390,357
8 Stark County 374,853
9 Lorain County 312,964
10 Warren County 242,337
11 Lake County 232,603
12 Mahoning County 228,614
13 Delaware County 214,124
14 Clermont County 208,601
15 Trumbull County 201,977
16 Medina County 182,470
17 Licking County 178,519
18 Greene County 167,966
19 Portage County 161,791
20 Fairfield County 158,921
21 Clark County 136,001
22 Wood County 132,248
23 Richland County 124,936
24 Wayne County 116,894
25 Miami County 108,774
26 Allen County 102,206
27 Columbiana County 101,877
28 Ashtabula County 97,574
29 Geauga County 95,397
30 Tuscarawas County 93,263
31 Muskingum County 86,410
32 Ross County 77,093
33 Erie County 75,622
34 Hancock County 74,920
35 Scioto County 74,008
36 Belmont County 66,497
37 Marion County 65,359
38 Jefferson County 65,249
39 Union County 62,784
40 Knox County 62,721
41 Athens County 62,431
42 Washington County 59,771
43 Sandusky County 58,896
44 Huron County 58,565
45 Pickaway County 58,539
46 Lawrence County 58,240
47 Seneca County 55,069
48 Ashland County 52,447
49 Darke County 51,881
50 Shelby County 48,230
51 Auglaize County 46,422
52 Logan County 46,150
53 Holmes County 44,223
54 Madison County 43,824
55 Brown County 43,676
56 Highland County 43,317
57 Fulton County 42,713
58 Mercer County 42,528
59 Crawford County 42,025
60 Clinton County 42,018
61 Preble County 40,999
62 Ottawa County 40,364
63 Champaign County 38,714
64 Guernsey County 38,438
65 Defiance County 38,286
66 Williams County 37,102
67 Coshocton County 36,612
68 Perry County 35,408
69 Morrow County 34,950
70 Putnam County 34,451
71 Jackson County 32,653
72 Hardin County 30,696
73 Gallia County 29,220
74 Fayette County 28,951
75 Van Wert County 28,931
76 Hocking County 28,050
77 Henry County 27,662
78 Adams County 27,477
79 Pike County 27,088
80 Carroll County 26,721
81 Meigs County 22,210
82 Wyandot County 21,900
83 Paulding County 18,806
84 Harrison County 14,483
85 Noble County 14,115
86 Morgan County 13,802
87 Monroe County 13,385
88 Vinton County 12,800

United States Census Bureau. B01001 SEX BY AGE, 2019 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 10 December 2020. http://www.census.gov/.

United States Census Bureau. "P2 Hispanic or Latino, and Not Hispanic or Latino by Race." 2020 Census State Redistricting Data (Public Law 94-171) Summary File. U.S. Census Bureau, 2020 Census. Web. 12 August 2021. https://www.census.gov/.

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