RANKING · 2020 CENSUS · 92 SHOWN OF 92

Largest by population, Indiana counties · 2020

The most populous us counties as of the 2023 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 densely populated Most sparsely populated Best broadband access Worst broadband access

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPTOTAL POPULATIONVS 2000

01Marion County, ININ992,196977,203+14%

02Lake County, ININ504,612498,700+3%

03Allen County, ININ402,329385,410+16%

04Hamilton County, ININ387,036347,467+90%

05St. Joseph County, ININ272,861272,912+3%

06Elkhart County, ININ208,774207,047+13%

07Tippecanoe County, ININ190,456186,251+25%

08Vanderburgh County, ININ181,995180,136+5%

09Hendricks County, ININ193,510174,788+68%

10Porter County, ININ176,049173,215+18%

11Johnson County, ININ174,262161,765+40%

12Monroe County, ININ143,345139,718+16%

13Madison County, ININ135,088130,129−2%

14Clark County, ININ130,451121,093+26%

15LaPorte County, ININ111,294112,417+2%

16Delaware County, ININ113,106111,903−6%

17Vigo County, ININ106,512106,153+0%

18Howard County, ININ83,90483,658−2%

19Bartholomew County, ININ85,72982,208+15%

20Floyd County, ININ82,15380,484+14%

21Kosciusko County, ININ80,89280,240+8%

22Hancock County, ININ90,96979,840+44%

23Morgan County, ININ74,96771,780+8%

24Boone County, ININ80,68970,812+54%

25Grant County, ININ66,52466,674−9%

26Wayne County, ININ66,16966,553−6%

27Warrick County, ININ66,80363,898+22%

28Dearborn County, ININ51,60950,679+10%

29Henry County, ININ49,13748,914+1%

30Noble County, ININ47,93747,457+3%

31Jackson County, ININ47,37046,428+12%

32Marshall County, ININ46,59946,095+2%

33Shelby County, ININ45,88245,055+4%

34Lawrence County, ININ45,56845,011−2%

35Dubois County, ININ44,01643,637+10%

36DeKalb County, ININ44,53543,265+7%

37LaGrange County, ININ41,30540,446+16%

38Harrison County, ININ40,43739,654+16%

39Montgomery County, ININ38,95437,936+1%

40Cass County, ININ37,83637,870−7%

41Putnam County, ININ37,87636,726+2%

42Huntington County, ININ37,22436,662−4%

43Knox County, ININ35,65236,282−8%

44Miami County, ININ34,48735,962−0%

45Adams County, ININ36,65035,809+6%

46Steuben County, ININ34,79934,435+4%

47Whitley County, ININ35,04634,191+11%

48Daviess County, ININ34,20933,381+12%

49Clinton County, ININ33,32233,190−2%

50Jefferson County, ININ33,27933,147+5%

51Gibson County, ININ33,09133,011+2%

52Jasper County, ININ33,89432,918+10%

53Wabash County, ININ30,71330,976−11%

54Greene County, ININ31,16530,803−7%

55Ripley County, ININ29,43428,995+9%

56Washington County, ININ28,38328,182+4%

57Wells County, ININ28,88328,180+2%

58Jennings County, ININ27,62227,613+0%

59Decatur County, ININ26,57626,472+8%

60Clay County, ININ26,41026,466−0%

61Posey County, ININ24,98825,222−7%

62White County, ININ25,16424,688−2%

63Randolph County, ININ24,43824,502−11%

64Scott County, ININ25,05324,384+6%

65Fayette County, ININ23,53323,398−9%

66Starke County, ININ23,42523,371−1%

67Franklin County, ININ23,28622,785+3%

68Owen County, ININ21,88621,321−2%

69Sullivan County, ININ20,83120,817−4%

70Fulton County, ININ20,09120,480−0%

71Jay County, ININ20,11820,478−6%

72Carroll County, ININ20,65520,306+1%

73Orange County, ININ19,83419,867+3%

74Spencer County, ININ20,06119,810−3%

75Perry County, ININ19,38919,170+1%

76Rush County, ININ16,76716,752−8%

77Fountain County, ININ17,01316,479−8%

78Parke County, ININ16,64216,156−6%

79Brown County, ININ15,77715,475+3%

80Vermillion County, ININ15,48815,439−8%

81Tipton County, ININ15,31915,359−7%

82Newton County, ININ14,18813,830−5%

83Pulaski County, ININ12,46312,514−9%

84Pike County, ININ12,00312,250−5%

85Blackford County, ININ11,73012,112−14%

86Crawford County, ININ10,50910,526−2%

87Martin County, ININ9,8569,812−5%

88Switzerland County, ININ10,0379,737+7%

89Benton County, ININ8,8838,719−7%

90Warren County, ININ8,4748,440+0%

91Union County, ININ6,8637,087−4%

92Ohio County, ININ5,9945,940+6%

SHOWING 1–92 OF 92

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES