Population in Ohio by County

Total population.

U.S. Census Bureau · ACS 5-year 2020-2024 · Updated November 2026

Ohio

11,810,293

Counties

88

Highest

Franklin

1,333,048

Lowest

Vinton

12,630

All Ohio counties, ranked

# Counties Population
1 Franklin 1,333,048
2 Cuyahoga 1,245,873
3 Hamilton 830,774
4 Summit 537,864
5 Montgomery 536,096
6 Lucas 428,018
7 Butler 392,876
8 Stark 373,713
9 Lorain 317,129
10 Warren 250,008
11 Lake 232,216
12 Delaware 226,834
13 Mahoning 226,491
14 Clermont 211,181
15 Trumbull 200,929
16 Medina 183,660
17 Licking 181,837
18 Greene 169,688
19 Fairfield 163,453
20 Portage 161,956
21 Clark 135,158
22 Wood 132,064
23 Richland 125,099
24 Wayne 116,588
25 Miami 110,296
26 Allen 101,348
27 Columbiana 100,704
28 Ashtabula 97,167
29 Geauga 95,481
30 Tuscarawas 92,385
31 Muskingum 86,411
32 Ross 76,492
33 Hancock 74,866
34 Erie 74,581
35 Scioto 72,627
36 Union 67,324
37 Belmont 65,473
38 Marion 65,020
39 Jefferson 64,518
40 Knox 63,142
41 Athens 61,737
42 Pickaway 60,131
43 Washington 58,978
44 Sandusky 58,778
45 Huron 58,319
46 Lawrence 56,819
47 Seneca 54,770
48 Ashland 52,256
49 Darke 51,594
50 Shelby 47,929
51 Auglaize 46,125
52 Logan 46,089
53 Madison 44,423
54 Holmes 44,418
55 Brown 43,845
56 Highland 43,517
57 Mercer 42,484
58 Fulton 42,240
59 Clinton 42,012
60 Crawford 41,711
61 Preble 40,765
62 Ottawa 39,994
63 Champaign 38,804
64 Defiance 38,343
65 Guernsey 38,223
66 Coshocton 36,744
67 Williams 36,719
68 Perry 35,535
69 Morrow 35,404
70 Putnam 34,314
71 Jackson 32,650
72 Hardin 30,475
73 Gallia 29,068
74 Fayette 28,876
75 Van Wert 28,826
76 Hocking 27,799
77 Henry 27,567
78 Adams 27,540
79 Pike 27,044
80 Carroll 26,659
81 Meigs 21,896
82 Wyandot 21,598
83 Paulding 18,791
84 Harrison 14,306
85 Noble 14,282
86 Morgan 13,651
87 Monroe 13,227
88 Vinton 12,630

About this dataset

Total population. Source: ACS 5-year 2020-2024 Data Profile, variable DP05_0001E. Values in people.

Source
U.S. Census Bureau
Citation
U.S. Census Bureau, American Community Survey 5-Year Estimates Data Profiles (2020-2024), DP05_0001E
Vintage
ACS 5-year 2020-2024
License
Public domain (U.S. Census Bureau)
Unit
people
Available at
State · County · ZIP code
Territory roll-up
Summed across each territory
Last loaded
November 2026

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US Population nationwide