Ohio Citizen Population By County in 2017 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2017, the citizen population for Ohio was 11,361,835 and represented 97.87% of the total Ohio population.

Among all Ohio counties, Cuyahoga had the highest citizen population (1.22M), followed by Franklin (1.18M), and Hamilton (784.69K).

In terms of percentages, Morrow had the highest percentage of its population being citizens (99.97%), followed by Meigs (99.94%), and Monroe (99.93%).

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 2017

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

See this for other years:

Ohio Citizen Population By County in 2017

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County	Citizen Population	% of County Population
Cuyahoga	1221630	97.16
Franklin	1181205	94.23
Hamilton	784690	97.03
Summit	527335	97.42
Montgomery	520230	97.79
Lucas	425585	98.20
Stark	370945	99.11
Butler	364685	97.07
Lorain	301915	98.86
Mahoning	229430	98.95
Lake	224650	97.80
Warren	217030	96.95
Trumbull	202600	99.64
Clermont	200260	99.06
Delaware	187500	97.14
Medina	175105	99.29
Licking	169200	99.13
Greene	160480	97.36
Portage	157530	97.19
Fairfield	149650	98.76
Clark	134085	98.94
Wood	127335	98.32
Richland	120890	99.47
Wayne	114750	99.00
Columbiana	104100	99.54
Allen	103455	99.33
Miami	103200	99.15
Ashtabula	97970	99.34
Geauga	93240	99.30
Tuscarawas	91585	98.98
Muskingum	85260	99.22
Ross	76800	99.58
Scioto	76515	99.54
Erie	74700	99.11
Hancock	73735	97.65
Belmont	68585	99.56
Jefferson	67055	99.56
Marion	64805	98.96
Athens	63270	96.50
Lawrence	60895	99.74
Knox	60615	99.46
Washington	60425	99.27
Sandusky	59080	99.19
Huron	57660	98.57
Pickaway	56850	99.61
Seneca	54955	98.93
Union	53835	98.44
Ashland	52635	98.75
Darke	51670	99.52
Shelby	48315	98.80
Auglaize	45545	99.49
Logan	45080	99.46
Holmes	43750	99.86
Brown	43670	99.70
Madison	43315	99.05
Highland	42825	99.52
Crawford	41995	99.44
Fulton	41935	99.15
Clinton	41615	99.39
Preble	41085	99.41
Ottawa	40685	99.79
Mercer	40460	99.35
Guernsey	39295	99.70
Champaign	38845	99.59
Defiance	38055	99.33
Williams	36865	99.47
Coshocton	36545	99.85
Perry	35935	99.86
Morrow	34925	99.97
Putnam	33870	99.52
Jackson	32425	99.39
Hardin	31230	98.91
Gallia	30060	99.52
Hocking	28420	99.56
Fayette	28350	98.92
Pike	28270	99.93
Van Wert	28160	99.65
Adams	27835	99.68
Carroll	27740	99.70
Henry	27290	99.36
Meigs	23220	99.94
Wyandot	21965	98.99
Paulding	18760	99.00
Harrison	15350	99.71
Morgan	14720	99.63
Noble	14450	99.66
Monroe	14230	99.93
Vinton	13115	99.81