RANKING · 2010 CENSUS · 88 SHOWN OF 88

Fastest growing, Ohio counties · 2010

Ohio counties ranked by population growth from the 2000 census to 2010. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Delaware County, OHOH242,032+58.4%−5.9 pts

02Warren County, OHOH257,181+34.3%−4.8 pts

03Union County, OHOH73,446+27.8%−0.1 pts

04Fairfield County, OHOH169,752+19.1%+0.4 pts

05Licking County, OHOH185,564+14.4%+1.0 pts

06Medina County, OHOH185,025+14.1%−9.4 pts

07Knox County, OHOH64,002+11.8%−3.0 pts

08Clermont County, OHOH216,977+10.9%−7.6 pts

09Butler County, OHOH400,128+10.6%−3.6 pts

10Morrow County, OHOH36,305+10.1%−3.9 pts

11Greene County, OHOH174,322+9.3%+1.1 pts

12Franklin County, OHOH1,361,536+8.8%−2.4 pts

13Holmes County, OHOH44,970+8.8%−9.8 pts

14Madison County, OHOH46,985+8.0%−0.5 pts

15Highland County, OHOH43,823+6.6%−7.8 pts

16Ross County, OHOH76,429+6.4%+0.6 pts

17Portage County, OHOH163,404+6.2%−0.5 pts

18Brown County, OHOH44,397+6.1%−14.9 pts

19Lorain County, OHOH323,219+5.9%+0.9 pts

20Perry County, OHOH35,918+5.8%−2.2 pts

21Pickaway County, OHOH62,978+5.6%−3.6 pts

22Vinton County, OHOH12,645+4.9%−10.5 pts

23Hancock County, OHOH75,034+4.9%−3.9 pts

24Adams County, OHOH27,865+4.5%−3.3 pts

25Noble County, OHOH14,276+4.2%−19.8 pts

26Athens County, OHOH63,197+4.1%−0.4 pts

27Hocking County, OHOH27,512+4.0%−6.6 pts

28Clinton County, OHOH42,301+3.7%−10.8 pts

29Miami County, OHOH112,634+3.7%−2.4 pts

30Pike County, OHOH27,061+3.7%−10.5 pts

31Wood County, OHOH134,176+3.7%−3.2 pts

32Shelby County, OHOH48,065+3.2%−3.5 pts

33Champaign County, OHOH38,820+3.1%−4.9 pts

34Meigs County, OHOH21,587+3.0%+2.7 pts

35Geauga County, OHOH95,676+2.7%−9.3 pts

36Wayne County, OHOH116,758+2.6%−7.3 pts

37Fayette County, OHOH28,552+2.1%−1.4 pts

38Tuscarawas County, OHOH92,373+1.8%−6.3 pts

39Jackson County, OHOH32,817+1.8%−6.2 pts

40Muskingum County, OHOH87,014+1.8%−1.3 pts

41Fulton County, OHOH41,853+1.5%−7.9 pts

42Ashland County, OHOH52,523+1.2%−9.4 pts

43Lake County, OHOH232,217+1.1%−4.5 pts

44Ottawa County, OHOH39,481+1.1%−1.3 pts

45Morgan County, OHOH13,626+1.1%−3.9 pts

46Coshocton County, OHOH37,188+0.7%−2.8 pts

47Marion County, OHOH65,115+0.4%−2.6 pts

48Scioto County, OHOH71,365+0.4%+1.8 pts

49Hardin County, OHOH30,072+0.4%−2.3 pts

50Belmont County, OHOH64,434+0.2%+1.4 pts

51Huron County, OHOH58,250+0.2%−5.5 pts

52Lawrence County, OHOH55,710+0.2%−0.6 pts

53Harrison County, OHOH14,070+0.1%+1.5 pts

54Carroll County, OHOH26,4750.0%−8.7 pts

55Preble County, OHOH40,664-0.2%−5.7 pts

56Summit County, OHOH538,376-0.2%−5.6 pts

57Mercer County, OHOH42,737-0.3%−4.0 pts

58Logan County, OHOH46,302-0.3%−9.1 pts

59Gallia County, OHOH29,072-0.4%−0.8 pts

60Putnam County, OHOH34,380-0.7%−3.3 pts

61Darke County, OHOH51,520-0.7%−0.1 pts

62Stark County, OHOH373,771-0.7%−3.5 pts

63Defiance County, OHOH38,292-1.2%−1.6 pts

64Ashtabula County, OHOH96,713-1.2%−4.1 pts

65Wyandot County, OHOH21,567-1.3%−4.2 pts

66Sandusky County, OHOH58,655-1.4%−1.1 pts

67Auglaize County, OHOH45,909-1.4%−6.0 pts

68Guernsey County, OHOH38,379-1.7%−6.3 pts

69Allen County, OHOH100,881-2.0%−0.8 pts

70Washington County, OHOH58,389-2.3%−3.9 pts

71Lucas County, OHOH423,347-2.9%−1.3 pts

72Van Wert County, OHOH29,013-3.1%−0.4 pts

73Erie County, OHOH73,296-3.1%−6.7 pts

74Seneca County, OHOH54,522-3.3%−1.5 pts

75Paulding County, OHOH18,727-3.3%−2.4 pts

76Richland County, OHOH124,893-3.4%−5.5 pts

77Henry County, OHOH27,598-3.4%−3.8 pts

78Monroe County, OHOH12,994-3.5%−1.5 pts

79Columbiana County, OHOH99,377-3.8%−7.3 pts

80Williams County, OHOH36,549-3.9%−10.0 pts

81Montgomery County, OHOH539,598-4.3%−1.7 pts

82Clark County, OHOH135,340-4.4%−2.5 pts

83Hamilton County, OHOH838,418-5.1%−2.7 pts

84Jefferson County, OHOH63,597-5.7%+2.3 pts

85Trumbull County, OHOH198,972-6.6%−5.4 pts

86Crawford County, OHOH41,896-6.8%−4.9 pts

87Mahoning County, OHOH224,706-7.3%−4.5 pts

88Cuyahoga County, OHOH1,232,925-8.2%−6.9 pts

SHOWING 1–88 OF 88

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS