RANKING · 2025 ESTIMATES · 92 SHOWN OF 92

Largest by population, Indiana counties

The most populous Indiana counties as of the 2025 population estimates. This list covers the 92 counties in Indiana that qualify, ranked against each other statewide.

IndianaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Marion County, ININ992,196+15%

02Lake County, ININ504,612+4%

03Allen County, ININ402,329+21%

04Hamilton County, ININ387,036+112%

05St. Joseph County, ININ272,861+3%

06Elkhart County, ININ208,774+14%

07Hendricks County, ININ193,510+86%

08Tippecanoe County, ININ190,456+28%

09Vanderburgh County, ININ181,995+6%

10Porter County, ININ176,049+20%

11Johnson County, ININ174,262+51%

12Monroe County, ININ143,345+19%

13Madison County, ININ135,088+1%

14Clark County, ININ130,451+35%

15Delaware County, ININ113,106−5%

16LaPorte County, ININ111,294+1%

17Vigo County, ININ106,512+1%

18Hancock County, ININ90,969+64%

19Bartholomew County, ININ85,729+20%

20Howard County, ININ83,904−1%

21Floyd County, ININ82,153+16%

22Kosciusko County, ININ80,892+9%

23Boone County, ININ80,689+75%

24Morgan County, ININ74,967+12%

25Warrick County, ININ66,803+28%

26Grant County, ININ66,524−9%

27Wayne County, ININ66,169−7%

28Dearborn County, ININ51,609+12%

29Henry County, ININ49,137+1%

30Noble County, ININ47,937+4%

31Jackson County, ININ47,370+15%

32Marshall County, ININ46,599+3%

33Shelby County, ININ45,882+6%

34Lawrence County, ININ45,568−1%

35DeKalb County, ININ44,535+11%

36Dubois County, ININ44,016+11%

37LaGrange County, ININ41,305+18%

38Harrison County, ININ40,437+18%

39Montgomery County, ININ38,954+4%

40Putnam County, ININ37,876+5%

41Cass County, ININ37,836−8%

42Huntington County, ININ37,224−2%

43Adams County, ININ36,650+9%

44Knox County, ININ35,652−9%

45Whitley County, ININ35,046+14%

46Steuben County, ININ34,799+5%

47Miami County, ININ34,487−4%

48Daviess County, ININ34,209+15%

49Jasper County, ININ33,894+13%

50Clinton County, ININ33,322−2%

51Jefferson County, ININ33,279+5%

52Gibson County, ININ33,091+2%

53Greene County, ININ31,165−6%

54Wabash County, ININ30,713−12%

55Ripley County, ININ29,434+11%

56Wells County, ININ28,883+5%

57Washington County, ININ28,383+4%

58Jennings County, ININ27,622+0%

59Decatur County, ININ26,576+8%

60Clay County, ININ26,410−1%

61White County, ININ25,164−0%

62Scott County, ININ25,053+9%

63Posey County, ININ24,988−8%

64Randolph County, ININ24,438−11%

65Fayette County, ININ23,533−8%

66Starke County, ININ23,425−1%

67Franklin County, ININ23,286+5%

68Owen County, ININ21,886+0%

69Sullivan County, ININ20,831−4%

70Carroll County, ININ20,655+2%

71Jay County, ININ20,118−8%

72Fulton County, ININ20,091−2%

73Spencer County, ININ20,061−2%

74Orange County, ININ19,834+3%

75Perry County, ININ19,389+3%

76Fountain County, ININ17,013−5%

77Rush County, ININ16,767−8%

78Parke County, ININ16,642−3%

79Brown County, ININ15,777+5%

80Vermillion County, ININ15,488−8%

81Tipton County, ININ15,319−8%

82Newton County, ININ14,188−3%

83Pulaski County, ININ12,463−9%

84Pike County, ININ12,003−6%

85Blackford County, ININ11,730−17%

86Crawford County, ININ10,509−2%

87Switzerland County, ININ10,037+11%

88Martin County, ININ9,856−5%

89Benton County, ININ8,883−6%

90Warren County, ININ8,474+1%

91Union County, ININ6,863−7%

92Ohio County, ININ5,994+7%

SHOWING 1–92 OF 92

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES