Please note that new Connecticut county and township level geographies are not available within the map.

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QuickFacts

Mercer County, Ohio; Geauga County, Ohio

QuickFacts provides statistics for all states and counties. Also for cities and towns with a population of 5,000 or more.

Chart

Population, Census, April 1, 2010

0
130,000
260,000
390,000
520,000
650,000
780,000
910,000
1,040,000
1,170,000
1,300,000
Cuyahoga County, Ohio
1,280,122
Franklin County, Ohio
1,163,414
Hamilton County, Ohio
802,374
Summit County, Ohio
541,781
Montgomery County, Ohio
535,153
Lucas County, Ohio
441,815
Stark County, Ohio
375,586
Butler County, Ohio
368,130
Lorain County, Ohio
301,356
Mahoning County, Ohio
238,823
Lake County, Ohio
230,041
Warren County, Ohio
212,693
Trumbull County, Ohio
210,312
Clermont County, Ohio
197,363
Delaware County, Ohio
174,214
Medina County, Ohio
172,332
Licking County, Ohio
166,492
Greene County, Ohio
161,573
Portage County, Ohio
161,419
Fairfield County, Ohio
146,156
Clark County, Ohio
138,333
Wood County, Ohio
125,488
Richland County, Ohio
124,475
Wayne County, Ohio
114,520
Columbiana County, Ohio
107,841
Allen County, Ohio
106,331
Miami County, Ohio
102,506
Ashtabula County, Ohio
101,497
Geauga County, Ohio
93,389
Tuscarawas County, Ohio
92,582
Muskingum County, Ohio
86,074
Scioto County, Ohio
79,499
Ross County, Ohio
78,064
Erie County, Ohio
77,079
Hancock County, Ohio
74,782
Belmont County, Ohio
70,400
Jefferson County, Ohio
69,709
Marion County, Ohio
66,501
Athens County, Ohio
64,757
Lawrence County, Ohio
62,450
Washington County, Ohio
61,778
Sandusky County, Ohio
60,944
Knox County, Ohio
60,921
Huron County, Ohio
59,626
Seneca County, Ohio
56,745
Pickaway County, Ohio
55,698
Ashland County, Ohio
53,139
Darke County, Ohio
52,959
Union County, Ohio
52,300
Shelby County, Ohio
49,423
Auglaize County, Ohio
45,949
Logan County, Ohio
45,858
Brown County, Ohio
44,846
Crawford County, Ohio
43,784
Highland County, Ohio
43,589
Madison County, Ohio
43,435
Fulton County, Ohio
42,698
Holmes County, Ohio
42,366
Preble County, Ohio
42,270
Clinton County, Ohio
42,040
Ottawa County, Ohio
41,428
Mercer County, Ohio
40,814
Champaign County, Ohio
40,097
Guernsey County, Ohio
40,087
Defiance County, Ohio
39,037
Williams County, Ohio
37,642
Coshocton County, Ohio
36,901
Perry County, Ohio
36,058
Morrow County, Ohio
34,827
Putnam County, Ohio
34,499
Jackson County, Ohio
33,225
Hardin County, Ohio
32,058
Gallia County, Ohio
30,934
Hocking County, Ohio
29,380
Fayette County, Ohio
29,030
Carroll County, Ohio
28,836
Van Wert County, Ohio
28,744
Pike County, Ohio
28,709
Adams County, Ohio
28,550
Henry County, Ohio
28,215
Meigs County, Ohio
23,770
Wyandot County, Ohio
22,615
Paulding County, Ohio
19,614
Harrison County, Ohio
15,864
Morgan County, Ohio
15,054
Noble County, Ohio
14,645
Monroe County, Ohio
14,642
Vinton County, Ohio
13,435
0
130,000
260,000
390,000
520,000
650,000
780,000
910,000
1,040,000
1,170,000
1,300,000
Value Notes

Methodology differences may exist between data sources, and so estimates from different sources are not comparable.

Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.

The vintage year (e.g., V2023) refers to the final year of the series (2020 thru 2023). Different vintage years of estimates are not comparable.

Users should exercise caution when comparing 2018-2022 ACS 5-year estimates to other ACS estimates. For more information, please visit the 2022 5-year ACS Comparison Guidance page.

Fact Notes Value Flags

QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

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