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%−9%

02Warren County, OHOH257,181+34.3%−12%

03Union County, OHOH73,446+27.8%−0%

04Fairfield County, OHOH169,752+19.1%+2%

05Licking County, OHOH185,564+14.4%+8%

06Medina County, OHOH185,025+14.1%−40%

07Knox County, OHOH64,002+11.8%−20%

08Clermont County, OHOH216,977+10.9%−41%

09Butler County, OHOH400,128+10.6%−25%

10Morrow County, OHOH36,305+10.1%−28%

11Greene County, OHOH174,322+9.3%+13%

12Franklin County, OHOH1,361,536+8.8%−21%

13Holmes County, OHOH44,970+8.8%−53%

14Madison County, OHOH46,985+8.0%−6%

15Highland County, OHOH43,823+6.6%−54%

16Ross County, OHOH76,429+6.4%+11%

17Portage County, OHOH163,404+6.2%−7%

18Brown County, OHOH44,397+6.1%−71%

19Lorain County, OHOH323,219+5.9%+17%

20Perry County, OHOH35,918+5.8%−27%

21Pickaway County, OHOH62,978+5.6%−39%

22Vinton County, OHOH12,645+4.9%−68%

23Hancock County, OHOH75,034+4.9%−44%

24Adams County, OHOH27,865+4.5%−42%

25Noble County, OHOH14,276+4.2%−83%

26Athens County, OHOH63,197+4.1%−9%

27Hocking County, OHOH27,512+4.0%−62%

28Clinton County, OHOH42,301+3.7%−74%

29Miami County, OHOH112,634+3.7%−40%

30Pike County, OHOH27,061+3.7%−74%

31Wood County, OHOH134,176+3.7%−47%

32Shelby County, OHOH48,065+3.2%−53%

33Champaign County, OHOH38,820+3.1%−61%

34Meigs County, OHOH21,587+3.0%+718%

35Geauga County, OHOH95,676+2.7%−77%

36Wayne County, OHOH116,758+2.6%−73%

37Fayette County, OHOH28,552+2.1%−40%

38Tuscarawas County, OHOH92,373+1.8%−77%

39Jackson County, OHOH32,817+1.8%−78%

40Muskingum County, OHOH87,014+1.8%−43%

41Fulton County, OHOH41,853+1.5%−84%

42Ashland County, OHOH52,523+1.2%−89%

43Lake County, OHOH232,217+1.1%−80%

44Ottawa County, OHOH39,481+1.1%−55%

45Morgan County, OHOH13,626+1.1%−79%

46Coshocton County, OHOH37,188+0.7%−81%

47Marion County, OHOH65,115+0.4%−86%

48Scioto County, OHOH71,365+0.4%−127%

49Hardin County, OHOH30,072+0.4%−87%

50Belmont County, OHOH64,434+0.2%−121%

51Huron County, OHOH58,250+0.2%−96%

52Lawrence County, OHOH55,710+0.2%−73%

53Harrison County, OHOH14,070+0.1%−104%

54Carroll County, OHOH26,4750.0%−100%

55Preble County, OHOH40,664-0.2%−103%

56Summit County, OHOH538,376-0.2%−104%

57Mercer County, OHOH42,737-0.3%−107%

58Logan County, OHOH46,302-0.3%−104%

59Gallia County, OHOH29,072-0.4%−217%

60Putnam County, OHOH34,380-0.7%−124%

61Darke County, OHOH51,520-0.7%+14%

62Stark County, OHOH373,771-0.7%−123%

63Defiance County, OHOH38,292-1.2%−407%

64Ashtabula County, OHOH96,713-1.2%−141%

65Wyandot County, OHOH21,567-1.3%−144%

66Sandusky County, OHOH58,655-1.4%+397%

67Auglaize County, OHOH45,909-1.4%−131%

68Guernsey County, OHOH38,379-1.7%−138%

69Allen County, OHOH100,881-2.0%+69%

70Washington County, OHOH58,389-2.3%−245%

71Lucas County, OHOH423,347-2.9%+84%

72Van Wert County, OHOH29,013-3.1%+17%

73Erie County, OHOH73,296-3.1%−186%

74Seneca County, OHOH54,522-3.3%+88%

75Paulding County, OHOH18,727-3.3%+252%

76Richland County, OHOH124,893-3.4%−258%

77Henry County, OHOH27,598-3.4%−1072%

78Monroe County, OHOH12,994-3.5%+73%

79Columbiana County, OHOH99,377-3.8%−208%

80Williams County, OHOH36,549-3.9%−165%

81Montgomery County, OHOH539,598-4.3%+66%

82Clark County, OHOH135,340-4.4%+133%

83Hamilton County, OHOH838,418-5.1%+110%

84Jefferson County, OHOH63,597-5.7%−29%

85Trumbull County, OHOH198,972-6.6%+455%

86Crawford County, OHOH41,896-6.8%+259%

87Mahoning County, OHOH224,706-7.3%+166%

88Cuyahoga County, OHOH1,232,925-8.2%+535%

SHOWING 1–88 OF 88

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