Indiana Population By County in 2023

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2023, the population of Indiana was 6,880,131. Among all Indiana counties, Marion had the highest population (975,654), followed by Lake (500,591), and Allen (395,131).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

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

Related Topics: Indiana Census Vintage Data Topic List.

Data Source: US Census Bureau (Vintage).

See this for other years:

Indiana Population By County in 2023

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County	Population	% of State Population
Adams	36469	0.53
Allen	395131	5.74
Bartholomew	84248	1.23
Benton	8761	0.13
Blackford	11875	0.17
Boone	76195	1.11
Brown	15691	0.23
Carroll	20570	0.30
Cass	37802	0.55
Clark	125686	1.83
Clay	26419	0.38
Clinton	32879	0.48
Crawford	10442	0.15
Daviess	33801	0.49
Dearborn	51414	0.75
Decatur	26395	0.38
DeKalb	44177	0.64
Delaware	112448	1.63
Dubois	43678	0.64
Elkhart	206963	3.01
Fayette	23256	0.34
Floyd	80882	1.18
Fountain	16674	0.24
Franklin	23174	0.34
Fulton	20319	0.30
Gibson	32919	0.48
Grant	66303	0.96
Greene	31132	0.45
Hamilton	372588	5.42
Hancock	86176	1.25
Harrison	40011	0.58
Hendricks	187141	2.72
Henry	48993	0.71
Howard	83857	1.22
Huntington	36818	0.54
Jackson	46787	0.68
Jasper	33456	0.49
Jay	20069	0.29
Jefferson	32938	0.48
Jennings	27614	0.40
Johnson	168305	2.45
Knox	36027	0.52
Kosciusko	80441	1.17
LaGrange	40979	0.60
Lake	500591	7.28
LaPorte	111586	1.62
Lawrence	45034	0.66
Madison	132746	1.93
Marion	975654	14.18
Marshall	46323	0.67
Martin	9862	0.14
Miami	35477	0.52
Monroe	141052	2.05
Montgomery	38571	0.56
Morgan	73100	1.06
Newton	14033	0.20
Noble	47508	0.69
Ohio	5993	0.09
Orange	19711	0.29
Owen	21775	0.32
Parke	16483	0.24
Perry	19291	0.28
Pike	12089	0.18
Porter	175289	2.55
Posey	25047	0.36
Pulaski	12434	0.18
Putnam	37578	0.55
Randolph	24360	0.35
Ripley	29208	0.43
Rush	16815	0.24
St. Joseph	273658	3.98
Scott	24625	0.36
Shelby	45281	0.66
Spencer	20018	0.29
Starke	23334	0.34
Steuben	34876	0.51
Sullivan	20822	0.30
Switzerland	9965	0.14
Tippecanoe	190482	2.77
Tipton	15295	0.22
Union	6972	0.10
Vanderburgh	179942	2.62
Vermillion	15363	0.22
Vigo	106053	1.54
Wabash	30762	0.45
Warren	8498	0.12
Warrick	66013	0.96
Washington	28189	0.41
Wayne	66273	0.96
Wells	28636	0.42
White	24775	0.36
Whitley	34786	0.51