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.

Flip the list · Fastest shrinking, US counties →

OhioAll states All rankings

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%−11.0 pts

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

80Cuyahoga 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

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

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

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

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

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

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

SHOWING 1–88 OF 88

Download CSV (full list, 88 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU POPULATION ESTIMATES