RANKING · 2020 CENSUS · 88 SHOWN OF 88

Fastest shrinking, Ohio counties

Ohio counties with the steepest population decline since the prior decennial census. 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 growing Most densely populated Most sparsely populated Best broadband access Worst broadband access

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Harrison County, OHOH14,070-8.7%+511%

02Monroe County, OHOH12,994-8.6%+320%

03Morgan County, OHOH13,626-8.3%−268%

04Carroll County, OHOH26,475-7.3%−184%

05Scioto County, OHOH71,365-6.9%+390%

06Lawrence County, OHOH55,710-6.7%−959%

07Meigs County, OHOH21,587-6.6%−1875%

08Jefferson County, OHOH63,597-6.4%−20%

09Pike County, OHOH27,061-5.6%−140%

10Belmont County, OHOH64,434-5.5%+365%

11Gallia County, OHOH29,072-5.5%−1591%

12Columbiana County, OHOH99,377-5.5%−258%

13Vinton County, OHOH12,645-4.7%−131%

14Hocking County, OHOH27,512-4.5%−143%

15Mahoning County, OHOH224,706-4.3%+56%

16Hardin County, OHOH30,072-4.2%−258%

17Paulding County, OHOH18,727-4.1%+333%

18Guernsey County, OHOH38,379-4.1%−191%

19Crawford County, OHOH41,896-4.0%+113%

20Trumbull County, OHOH198,972-4.0%+235%

21Allen County, OHOH100,881-3.9%+232%

22Ashtabula County, OHOH96,713-3.9%−233%

23Adams County, OHOH27,865-3.8%−149%

24Noble County, OHOH14,276-3.6%−115%

25Athens County, OHOH63,197-3.6%−180%

26Champaign County, OHOH38,820-3.4%−143%

27Sandusky County, OHOH58,655-3.4%+1118%

28Washington County, OHOH58,389-3.2%−303%

29Wyandot County, OHOH21,567-3.2%−208%

30Preble County, OHOH40,664-3.0%−154%

31Seneca County, OHOH54,522-3.0%+68%

32Brown County, OHOH44,397-2.6%−112%

33Ottawa County, OHOH39,481-2.6%−208%

34Shelby County, OHOH48,065-2.4%−136%

35Lucas County, OHOH423,347-2.4%+51%

36Darke County, OHOH51,520-2.0%+252%

37Henry County, OHOH27,598-2.0%−659%

38Defiance County, OHOH38,292-1.9%−605%

39Erie County, OHOH73,296-1.9%−152%

40Perry County, OHOH35,918-1.8%−123%

41Huron County, OHOH58,250-1.8%−131%

42Jackson County, OHOH32,817-1.7%−122%

43Marion County, OHOH65,115-1.7%−157%

44Clark County, OHOH135,340-1.7%−11%

45Williams County, OHOH36,549-1.4%−124%

46Ashland County, OHOH52,523-1.3%−112%

47Ross County, OHOH76,429-1.2%−121%

48Cuyahoga County, OHOH1,232,925-1.2%−7%

49Coshocton County, OHOH37,188-0.8%−123%

50Highland County, OHOH43,823-0.6%−104%

51Fayette County, OHOH28,552-0.3%−108%

52Summit County, OHOH538,376-0.2%−105%

53Stark County, OHOH373,771-0.2%−107%

54Putnam County, OHOH34,380-0.1%−105%

55Clinton County, OHOH42,301-0.1%−100%

56Fulton County, OHOH41,853+0.0%−100%

57Hancock County, OHOH75,034+0.2%−98%

58Portage County, OHOH163,404+0.2%−97%

59Morrow County, OHOH36,305+0.4%−97%

60Richland County, OHOH124,893+0.4%−83%

61Muskingum County, OHOH87,014+0.4%−87%

62Montgomery County, OHOH539,598+0.4%−116%

63Logan County, OHOH46,302+0.6%−93%

64Van Wert County, OHOH29,013+0.7%−125%

65Tuscarawas County, OHOH92,373+0.7%−91%

66Madison County, OHOH46,985+0.9%−89%

67Auglaize County, OHOH45,909+1.0%−77%

68Lake County, OHOH232,217+1.1%−80%

69Wayne County, OHOH116,758+2.1%−79%

70Geauga County, OHOH95,676+2.2%−82%

71Knox County, OHOH64,002+3.0%−80%

72Hamilton County, OHOH838,418+3.5%−246%

73Lorain County, OHOH323,219+3.9%−23%

74Greene County, OHOH174,322+4.0%−52%

75Mercer County, OHOH42,737+4.2%+12%

76Holmes County, OHOH44,970+4.4%−76%

77Pickaway County, OHOH62,978+5.1%−45%

78Wood County, OHOH134,176+5.4%−22%

79Clermont County, OHOH216,977+5.7%−69%

80Medina County, OHOH185,025+5.9%−75%

81Butler County, OHOH400,128+6.0%−57%

82Miami County, OHOH112,634+6.1%+0%

83Licking County, OHOH185,564+7.2%−46%

84Fairfield County, OHOH169,752+8.7%−53%

85Franklin County, OHOH1,361,536+13.8%+23%

86Warren County, OHOH257,181+13.9%−64%

87Union County, OHOH73,446+20.0%−28%

88Delaware County, OHOH242,032+22.9%−64%

SHOWING 1–88 OF 88

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES