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.

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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

01Union County, OHOH73,446+17.0%−39%

02Delaware County, OHOH242,032+13.0%−80%

03Pickaway County, OHOH62,978+7.6%−18%

04Madison County, OHOH46,985+7.2%−15%

05Fairfield County, OHOH169,752+6.8%−63%

06Warren County, OHOH257,181+6.1%−84%

07Clermont County, OHOH216,977+4.0%−78%

08Licking County, OHOH185,564+3.9%−71%

09Morrow County, OHOH36,305+3.9%−72%

10Greene County, OHOH174,322+3.8%−54%

11Miami County, OHOH112,634+3.5%−42%

12Lorain County, OHOH323,219+3.3%−34%

13Franklin County, OHOH1,361,536+2.9%−75%

14Butler County, OHOH400,128+2.5%−82%

15Knox County, OHOH64,002+2.0%−86%

16Holmes County, OHOH44,970+1.7%−91%

17Brown County, OHOH44,397+1.7%−92%

18Coshocton County, OHOH37,188+1.6%−55%

19Wood County, OHOH134,176+1.5%−79%

20Perry County, OHOH35,918+1.4%−82%

21Adams County, OHOH27,865+1.4%−82%

22Medina County, OHOH185,025+1.4%−94%

23Athens County, OHOH63,197+1.2%−73%

24Highland County, OHOH43,823+1.2%−92%

25Noble County, OHOH14,276+1.1%−95%

26Portage County, OHOH163,404+1.0%−85%

27Hamilton County, OHOH838,418+0.9%−139%

28Muskingum County, OHOH87,014+0.7%−77%

29Clinton County, OHOH42,301+0.7%−95%

30Jackson County, OHOH32,817+0.5%−94%

31Mercer County, OHOH42,737+0.5%−87%

32Montgomery County, OHOH539,598+0.4%−117%

33Logan County, OHOH46,302+0.3%−96%

34Geauga County, OHOH95,676+0.3%−98%

35Van Wert County, OHOH29,013+0.3%−111%

36Champaign County, OHOH38,820+0.3%−97%

37Hancock County, OHOH75,034+0.2%−98%

38Ashland County, OHOH52,523+0.1%−99%

39Defiance County, OHOH38,292+0.0%−96%

40Richland County, OHOH124,893-0.0%−102%

41Pike County, OHOH27,061-0.1%−101%

42Wayne County, OHOH116,758-0.1%−101%

43Guernsey County, OHOH38,379-0.2%−103%

44Lake County, OHOH232,217-0.2%−103%

45Putnam County, OHOH34,380-0.2%−108%

46Henry County, OHOH27,598-0.2%−166%

47Stark County, OHOH373,771-0.3%−110%

48Crawford County, OHOH41,896-0.3%−84%

49Shelby County, OHOH48,065-0.3%−105%

50Marion County, OHOH65,115-0.4%−112%

51Summit County, OHOH538,376-0.4%−107%

52Sandusky County, OHOH58,655-0.4%+48%

53Paulding County, OHOH18,727-0.4%−56%

54Clark County, OHOH135,340-0.5%−74%

55Gallia County, OHOH29,072-0.5%−236%

56Huron County, OHOH58,250-0.5%−109%

57Darke County, OHOH51,520-0.7%+20%

58Preble County, OHOH40,664-0.8%−115%

59Ross County, OHOH76,429-0.9%−115%

60Ashtabula County, OHOH96,713-0.9%−130%

61Carroll County, OHOH26,475-0.9%−111%

62Tuscarawas County, OHOH92,373-1.0%−112%

63Seneca County, OHOH54,522-1.0%−43%

64Auglaize County, OHOH45,909-1.1%−124%

65Vinton County, OHOH12,645-1.2%−108%

66Morgan County, OHOH13,626-1.3%−126%

67Allen County, OHOH100,881-1.3%+11%

68Fayette County, OHOH28,552-1.4%−139%

69Trumbull County, OHOH198,972-1.5%+26%

70Williams County, OHOH36,549-1.5%−125%

71Wyandot County, OHOH21,567-1.5%−152%

72Mahoning County, OHOH224,706-1.7%−38%

73Lucas County, OHOH423,347-1.8%+16%

74Hocking County, OHOH27,512-1.9%−118%

75Fulton County, OHOH41,853-2.0%−122%

76Hardin County, OHOH30,072-2.0%−176%

77Ottawa County, OHOH39,481-2.2%−192%

78Washington County, OHOH58,389-2.3%−244%

79Columbiana County, OHOH99,377-2.5%−170%

80Cuyahoga County, OHOH1,232,925-2.5%+96%

81Jefferson County, OHOH63,597-2.5%−68%

82Meigs County, OHOH21,587-2.8%−859%

83Harrison County, OHOH14,070-2.9%+100%

84Monroe County, OHOH12,994-2.9%+43%

85Erie County, OHOH73,296-3.1%−185%

86Belmont County, OHOH64,434-3.1%+160%

87Scioto County, OHOH71,365-3.6%+153%

88Lawrence County, OHOH55,710-4.3%−654%

SHOWING 1–88 OF 88

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES