RANKING · 2025 ESTIMATES · 88 SHOWN OF 88

Fastest growing, Ohio counties

Ohio counties ranked by population growth from the 2020 census to 2025. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide. The median across all 88 is -0.2%. Biggest climber in the top 100 since 2020: Adams County, OH, up 45 places to #21.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01▲1Union County, OHOH73,446+17.0%−11.0 pts

02▼1Delaware County, OHOH242,032+13.0%−51.3 pts

03▲9Pickaway County, OHOH62,978+7.6%−1.7 pts

04▲19Madison County, OHOH46,985+7.2%−1.3 pts

05Fairfield County, OHOH169,752+6.8%−11.8 pts

06▼3Warren County, OHOH257,181+6.1%−32.9 pts

07▲3Clermont County, OHOH216,977+4.0%−14.5 pts

08▼2Licking County, OHOH185,564+3.9%−9.5 pts

09▲21Morrow County, OHOH36,305+3.9%−10.1 pts

10▲5Greene County, OHOH174,322+3.8%−4.4 pts

11▼4Miami County, OHOH112,634+3.5%−2.6 pts

12▲4Lorain County, OHOH323,219+3.3%−1.7 pts

13▼9Franklin County, OHOH1,361,536+2.9%−8.3 pts

14▼6Butler County, OHOH400,128+2.5%−11.7 pts

15▲3Knox County, OHOH64,002+2.0%−12.8 pts

16▼3Holmes County, OHOH44,970+1.7%−16.9 pts

17▲40Brown County, OHOH44,397+1.7%−19.3 pts

18▲22Coshocton County, OHOH37,188+1.6%−1.9 pts

19▼8Wood County, OHOH134,176+1.5%−5.4 pts

20▲29Perry County, OHOH35,918+1.4%−6.5 pts

21▲45Adams County, OHOH27,865+1.4%−6.3 pts

22▼13Medina County, OHOH185,025+1.4%−22.1 pts

23▲41Athens County, OHOH63,197+1.2%−3.3 pts

24▲15Highland County, OHOH43,823+1.2%−13.2 pts

25▲40Noble County, OHOH14,276+1.1%−22.9 pts

26▲5Portage County, OHOH163,404+1.0%−5.6 pts

27▼10Hamilton County, OHOH838,418+0.9%+3.4 pts

28Muskingum County, OHOH87,014+0.7%−2.4 pts

29▲5Clinton County, OHOH42,301+0.7%−13.8 pts

30▲17Jackson County, OHOH32,817+0.5%−7.5 pts

31▼17Mercer County, OHOH42,737+0.5%−3.3 pts

32▼5Montgomery County, OHOH539,598+0.4%+3.0 pts

33▼7Logan County, OHOH46,302+0.3%−8.4 pts

34▼15Geauga County, OHOH95,676+0.3%−11.7 pts

35▼10Van Wert County, OHOH29,013+0.3%+2.9 pts

36▲27Champaign County, OHOH38,820+0.3%−7.7 pts

37▼5Hancock County, OHOH75,034+0.2%−8.6 pts

38▲5Ashland County, OHOH52,523+0.1%−10.4 pts

39▲12Defiance County, OHOH38,292+0.0%−0.4 pts

40▼11Richland County, OHOH124,893-0.0%−2.2 pts

41▲39Pike County, OHOH27,061-0.1%−14.3 pts

42▼22Wayne County, OHOH116,758-0.1%−10.1 pts

43▲28Guernsey County, OHOH38,379-0.2%−4.7 pts

44▼23Lake County, OHOH232,217-0.2%−5.7 pts

45▼10Putnam County, OHOH34,380-0.2%−2.9 pts

46▲6Henry County, OHOH27,598-0.2%−0.6 pts

47▼11Stark County, OHOH373,771-0.3%−3.1 pts

48▲22Crawford County, OHOH41,896-0.3%+1.6 pts

49▲6Shelby County, OHOH48,065-0.3%−7.0 pts

50▼4Marion County, OHOH65,115-0.4%−3.4 pts

51▼14Summit County, OHOH538,376-0.4%−5.8 pts

52▲10Sandusky County, OHOH58,655-0.4%−0.1 pts

53▲19Paulding County, OHOH18,727-0.4%+0.5 pts

54▼9Clark County, OHOH135,340-0.5%+1.4 pts

55▲23Gallia County, OHOH29,072-0.5%−0.9 pts

56▼8Huron County, OHOH58,250-0.5%−6.3 pts

57▼4Darke County, OHOH51,520-0.7%−0.1 pts

58▲1Preble County, OHOH40,664-0.8%−6.4 pts

59▼17Ross County, OHOH76,429-0.9%−6.7 pts

60▲7Ashtabula County, OHOH96,713-0.9%−3.8 pts

61▲24Carroll County, OHOH26,475-0.9%−9.6 pts

62▼38Tuscarawas County, OHOH92,373-1.0%−9.1 pts

63▼5Seneca County, OHOH54,522-1.0%+0.8 pts

64▼42Auglaize County, OHOH45,909-1.1%−5.6 pts

65▲11Vinton County, OHOH12,645-1.2%−16.6 pts

66▲20Morgan County, OHOH13,626-1.3%−6.2 pts

67▲1Allen County, OHOH100,881-1.3%−0.1 pts

68▼30Fayette County, OHOH28,552-1.4%−4.9 pts

69Trumbull County, OHOH198,972-1.5%−0.3 pts

70▼26Williams County, OHOH36,549-1.5%−7.5 pts

71▼11Wyandot County, OHOH21,567-1.5%−4.5 pts

72▲2Mahoning County, OHOH224,706-1.7%+1.0 pts

73▼19Lucas County, OHOH423,347-1.8%−0.3 pts

74▲1Hocking County, OHOH27,512-1.9%−12.5 pts

75▼42Fulton County, OHOH41,853-2.0%−11.3 pts

76▼3Hardin County, OHOH30,072-2.0%−4.7 pts

77▼21Ottawa County, OHOH39,481-2.2%−4.6 pts

78▼17Washington County, OHOH58,389-2.3%−3.9 pts

79▼2Columbiana County, OHOH99,377-2.5%−6.0 pts

80▼39Cuyahoga County, OHOH1,232,925-2.5%−1.2 pts

81Jefferson County, OHOH63,597-2.5%+5.4 pts

82Meigs County, OHOH21,587-2.8%−3.2 pts

83▲5Harrison County, OHOH14,070-2.9%−1.4 pts

84▲3Monroe County, OHOH12,994-2.9%−0.9 pts

85▼35Erie County, OHOH73,296-3.1%−6.7 pts

86▼7Belmont County, OHOH64,434-3.1%−1.9 pts

87▼3Scioto County, OHOH71,365-3.6%−2.2 pts

88▼5Lawrence County, OHOH55,710-4.3%−5.1 pts

SHOWING 1–88 OF 88

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES