RANKING · 2020 CENSUS · 92 SHOWN OF 92

Most population gained, Indiana counties · 2020

Indiana counties that added the most residents from the 2010 census to 2020, by raw count of people rather than percentage. This list covers the 92 counties in Indiana that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Marion County, ININ992,196+73,810+17%

02Hamilton County, ININ387,036+72,898−1%

03Allen County, ININ402,329+30,081−3%

04Hendricks County, ININ193,510+29,340+3%

05Johnson County, ININ174,262+22,111−18%

06Boone County, ININ80,689+14,172+78%

07Tippecanoe County, ININ190,456+13,471−27%

08Clark County, ININ130,451+10,861+25%

09Hancock County, ININ90,969+9,838−0%

10Elkhart County, ININ208,774+9,488−64%

11Porter County, ININ176,049+8,872−50%

12St. Joseph County, ININ272,861+5,981−68%

13Floyd County, ININ82,153+5,906−8%

14Bartholomew County, ININ85,729+5,414−30%

15Warrick County, ININ66,803+4,209−44%

16Jackson County, ININ47,370+4,052+12%

17LaGrange County, ININ41,305+3,318−39%

18Morgan County, ININ74,967+2,886−73%

19Kosciusko County, ININ80,892+2,882−67%

20Lake County, ININ504,612+2,695−70%

21Dubois County, ININ44,016+1,748−43%

22Monroe County, ININ143,345+1,744−85%

23Daviess County, ININ34,209+1,733−24%

24Adams County, ININ36,650+1,422−44%

25DeKalb County, ININ44,535+1,042−79%

26LaPorte County, ININ111,294+950−69%

27Howard County, ININ83,904+906−78%

28Whitley County, ININ35,046+899−71%

29Decatur County, ININ26,576+732−20%

30Jefferson County, ININ33,279+719−62%

31Dearborn County, ININ51,609+632−91%

32Shelby County, ININ45,882+619−80%

33Wells County, ININ28,883+544−67%

34Vanderburgh County, ININ181,995+433−94%

35Harrison County, ININ40,437+290−93%

36Steuben County, ININ34,799+250−96%

37Brown County, ININ15,777+233−73%

38Scott County, ININ25,053+203−90%

39Ripley County, ININ29,434+177−91%

40Carroll County, ININ20,655+151−89%

41White County, ININ25,164+45−98%

42Orange County, ININ19,834+27−97%

43Starke County, ININ23,425+8−99%

44Clinton County, ININ33,322-34−101%

45Warren County, ININ8,474-68−128%

46Noble County, ININ47,937-79−101%

47Washington County, ININ28,383-80−102%

48Benton County, ININ8,883-135+575%

49Perry County, ININ19,389-168−19%

50Crawford County, ININ10,509-187−123%

51Montgomery County, ININ38,954-188−106%

52Ohio County, ININ5,994-188−161%

53Owen County, ININ21,886-254−106%

54Franklin County, ININ23,286-302−112%

55Fulton County, ININ20,091-356−121%

56Newton County, ININ14,188-414−141%

57Clay County, ININ26,410-424−123%

58Union County, ININ6,863-429−215%

59Huntington County, ININ37,224-462−117%

60Gibson County, ININ33,091-492−184%

61Martin County, ININ9,856-522–

62Henry County, ININ49,137-548−249%

63Jasper County, ININ33,894-560−111%

64Tipton County, ININ15,319-577−226%

65Pike County, ININ12,003-595−281%

66Rush County, ININ16,767-640−585%

67Blackford County, ININ11,730-654+3342%

68Sullivan County, ININ20,831-658−124%

69Posey County, ININ24,988-688−163%

70Fountain County, ININ17,013-761−621%

71Vermillion County, ININ15,488-773−5253%

72Jay County, ININ20,118-775−364%

73Switzerland County, ININ10,037-876−166%

74Fayette County, ININ23,533-879+106%

75Pulaski County, ININ12,463-888−180%

76Jennings County, ININ27,622-912−123%

77Miami County, ININ34,487-941+15%

78Marshall County, ININ46,599-956−132%

79Cass County, ININ37,836-1,096−144%

80Lawrence County, ININ45,568-1,123−136%

81Spencer County, ININ20,061-1,142−227%

82Parke County, ININ16,642-1,183−165%

83Putnam County, ININ37,876-1,237−122%

84Madison County, ININ135,088-1,507−156%

85Randolph County, ININ24,438-1,669−760%

86Vigo County, ININ106,512-1,695+554%

87Wabash County, ININ30,713-1,912+1654%

88Knox County, ININ35,652-2,158+244%

89Greene County, ININ31,165-2,362−186%

90Wayne County, ININ66,169-2,364+177%

91Grant County, ININ66,524-3,387+342%

92Delaware County, ININ113,106-5,768+548%

SHOWING 1–92 OF 92

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS