Ohio Citizen Population By County in 2023 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2023, the citizen population for Ohio was 11,502,000 and represented 97.64% of the total Ohio population.

Among all Ohio counties, Franklin had the highest citizen population (1.24M), followed by Cuyahoga (1.21M), and Hamilton (798.22K).

In terms of percentages, Vinton had the highest percentage of its population being citizens (100.00%), followed by Hocking (99.89%), and Guernsey (99.87%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

You may also be interested in:
Ohio Citizen Voting-age Population By County in 2023

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Ohio Citizen Population By County in 2023

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County	Citizen Population	% of County Population
Franklin	1236505	93.56
Cuyahoga	1213470	97.12
Hamilton	798220	96.42
Summit	524730	97.52
Montgomery	522545	97.58
Lucas	422695	98.59
Butler	373005	95.66
Stark	370330	99.08
Lorain	310840	98.81
Warren	235905	95.75
Lake	227755	98.13
Mahoning	224715	98.97
Delaware	211805	95.77
Clermont	207845	99.04
Trumbull	200665	99.65
Medina	181080	98.92
Licking	178370	98.92
Greene	165550	98.23
Fairfield	158790	98.45
Portage	158480	98.18
Clark	133645	98.67
Wood	129845	98.52
Richland	124405	99.41
Wayne	114810	98.45
Miami	108295	98.85
Allen	100875	99.20
Columbiana	100770	99.57
Ashtabula	96710	99.35
Geauga	94900	99.39
Tuscarawas	91235	98.54
Muskingum	85980	99.54
Ross	76420	99.57
Erie	74465	99.37
Hancock	73295	97.88
Scioto	72810	99.58
Belmont	65760	99.67
Marion	64755	99.40
Jefferson	64505	99.46
Union	63575	97.37
Knox	62275	99.02
Athens	59940	97.35
Pickaway	59305	99.83
Washington	58965	99.40
Sandusky	58215	99.06
Huron	57730	98.84
Lawrence	57260	99.78
Seneca	54455	99.26
Ashland	51985	99.41
Darke	51375	99.46
Shelby	47740	99.45
Auglaize	46100	99.76
Logan	45715	99.08
Holmes	44240	99.84
Brown	43610	99.77
Madison	43605	98.82
Highland	43230	99.60
Fulton	42105	99.22
Mercer	42045	99.07
Crawford	41415	99.16
Clinton	41245	98.17
Preble	40720	99.80
Ottawa	40055	99.74
Champaign	38665	99.73
Guernsey	38235	99.87
Defiance	37920	99.11
Coshocton	36600	99.78
Williams	36565	99.20
Perry	35325	99.58
Morrow	35135	99.77
Putnam	34050	99.13
Jackson	32445	99.56
Hardin	30305	99.28
Gallia	29100	99.79
Van Wert	28670	99.46
Fayette	28645	99.19
Hocking	27910	99.89
Henry	27350	99.17
Adams	27305	99.26
Pike	26980	99.63
Carroll	26680	99.81
Meigs	21960	99.50
Wyandot	21575	99.42
Paulding	18625	99.07
Harrison	14375	99.76
Noble	14205	99.68
Morgan	13725	99.75
Monroe	13270	99.70
Vinton	12685	100.00