Ranking of Ohio Counties By Population in 2017

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2017, the Population for Ohio was 11.67M. Among all Ohio counties, Franklin County had the highest population (1.30M), followed by Cuyahoga County (1.25M), and Hamilton County (814.69K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Ohio counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Ohio Counties By Population in 2017
Franklin
Cuyahoga
Hamilton
Summit
Montgomery
Lucas
Butler
Stark
Lorain
Lake
Ranking of Ohio Counties By Population in 2017
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Rank County Population
1 Franklin County 1296374
2 Cuyahoga County 1247808
3 Hamilton County 814693
4 Summit County 541695
5 Montgomery County 531964
6 Lucas County 431312
7 Butler County 380751
8 Stark County 372120
9 Lorain County 307498
10 Lake County 230114
11 Mahoning County 229438
12 Warren County 229292
13 Clermont County 204456
14 Delaware County 201157
15 Trumbull County 200424
16 Medina County 178339
17 Licking County 173790
18 Greene County 166720
19 Portage County 162441
20 Fairfield County 154718
21 Clark County 134636
22 Wood County 130593
23 Richland County 120500
24 Wayne County 116227
25 Miami County 105215
26 Columbiana County 103198
27 Allen County 103173
28 Ashtabula County 97773
29 Geauga County 93891
30 Tuscarawas County 92377
31 Muskingum County 86099
32 Ross County 77299
33 Scioto County 76018
34 Hancock County 75984
35 Erie County 74778
36 Belmont County 68074
37 Athens County 66587
38 Jefferson County 66398
39 Marion County 65113
40 Knox County 61345
41 Washington County 60557
42 Lawrence County 60176
43 Sandusky County 59097
44 Huron County 58403
45 Pickaway County 57769
46 Union County 56842
47 Seneca County 55322
48 Ashland County 53673
49 Darke County 51575
50 Shelby County 48731
51 Auglaize County 45756
52 Logan County 45217
53 Madison County 44077
54 Holmes County 43908
55 Brown County 43558
56 Highland County 42931
57 Fulton County 42274
58 Clinton County 42035
59 Crawford County 41733
60 Preble County 41119
61 Mercer County 40889
62 Ottawa County 40652
63 Guernsey County 39077
64 Champaign County 38857
65 Defiance County 38158
66 Williams County 36754
67 Coshocton County 36535
68 Perry County 35975
69 Morrow County 34928
70 Putnam County 33870
71 Jackson County 32398
72 Hardin County 31338
73 Gallia County 30156
74 Fayette County 28669
75 Hocking County 28440
76 Van Wert County 28290
77 Pike County 28084
78 Adams County 27747
79 Carroll County 27329
80 Henry County 27189
81 Meigs County 23083
82 Wyandot County 22057
83 Paulding County 18816
84 Harrison County 15203
85 Morgan County 14645
86 Noble County 14406
87 Monroe County 13946
88 Vinton County 13080