RANKING · 2020 CENSUS · 88 SHOWN OF 88

Oldest by median age, Ohio counties · 2020

Ohio counties ranked by median age of residents (2020 ACS). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Ottawa County, OHOH39,48150.0+22%

02Monroe County, OHOH12,99447.4+16%

03Harrison County, OHOH14,07046.6+13%

04Carroll County, OHOH26,47546.2+19%

05Erie County, OHOH73,29646.1+17%

06Geauga County, OHOH95,67645.8+18%

07Morgan County, OHOH13,62645.7+17%

08Belmont County, OHOH64,43445.2+11%

09Columbiana County, OHOH99,37745.1+17%

10Trumbull County, OHOH198,97244.9+15%

11Lake County, OHOH232,21744.7+16%

12Meigs County, OHOH21,58744.6+16%

13Jefferson County, OHOH63,59744.6+7%

14Crawford County, OHOH41,89644.5+16%

15Washington County, OHOH58,38944.3+13%

16Mahoning County, OHOH224,70644.2+11%

17Ashtabula County, OHOH96,71343.6+16%

18Hocking County, OHOH27,51243.6+16%

19Vinton County, OHOH12,64543.6+23%

20Wyandot County, OHOH21,56743.5+16%

21Preble County, OHOH40,66443.4+16%

22Guernsey County, OHOH38,37943.2+15%

23Sandusky County, OHOH58,65543.2+16%

24Brown County, OHOH44,39743.1+22%

25Lawrence County, OHOH55,71043.1+15%

26Medina County, OHOH185,02543.1+18%

27Logan County, OHOH46,30242.9+16%

28Morrow County, OHOH36,30542.7+17%

29Champaign County, OHOH38,82042.6+15%

30Lorain County, OHOH323,21942.6+17%

31Darke County, OHOH51,52042.5+14%

32Henry County, OHOH27,59842.3+16%

33Williams County, OHOH36,54942.3+15%

34Adams County, OHOH27,86542.2+16%

35Stark County, OHOH373,77142.2+10%

36Clark County, OHOH135,34042.0+12%

37Fulton County, OHOH41,85341.8+16%

38Richland County, OHOH124,89341.7+11%

39Tuscarawas County, OHOH92,37341.6+10%

40Summit County, OHOH538,37641.6+12%

41Ashland County, OHOH52,52341.5+14%

42Fayette County, OHOH28,55241.5+11%

43Gallia County, OHOH29,07241.5+11%

44Defiance County, OHOH38,29241.4+13%

45Ross County, OHOH76,42941.4+12%

46Auglaize County, OHOH45,90941.3+13%

47Highland County, OHOH43,82341.3+14%

48Miami County, OHOH112,63441.3+10%

49Paulding County, OHOH18,72741.3+13%

50Coshocton County, OHOH37,18841.2+9%

51Marion County, OHOH65,11541.2+11%

52Pike County, OHOH27,06141.2+17%

53Scioto County, OHOH71,36541.2+12%

54Madison County, OHOH46,98541.1+15%

55Huron County, OHOH58,25041.0+17%

56Muskingum County, OHOH87,01441.0+12%

57Perry County, OHOH35,91841.0+17%

58Van Wert County, OHOH29,01341.0+9%

59Clinton County, OHOH42,30140.9+16%

60Jackson County, OHOH32,81740.8+12%

61Clermont County, OHOH216,97740.7+17%

62Seneca County, OHOH54,52240.6+12%

63Cuyahoga County, OHOH1,232,92540.5+9%

64Noble County, OHOH14,27640.4+14%

65Licking County, OHOH185,56440.4+10%

66Hancock County, OHOH75,03440.3+12%

67Pickaway County, OHOH62,97840.3+12%

68Allen County, OHOH100,88140.2+11%

69Putnam County, OHOH34,38040.2+15%

70Shelby County, OHOH48,06540.2+16%

71Warren County, OHOH257,18140.0+14%

72Portage County, OHOH163,40439.8+16%

73Fairfield County, OHOH169,75239.7+10%

74Knox County, OHOH64,00239.7+9%

75Montgomery County, OHOH539,59839.6+9%

76Delaware County, OHOH242,03239.4+12%

77Mercer County, OHOH42,73739.1+10%

78Wayne County, OHOH116,75839.0+10%

79Lucas County, OHOH423,34738.9+11%

80Greene County, OHOH174,32238.1+7%

81Union County, OHOH73,44638.0+10%

82Butler County, OHOH400,12837.4+9%

83Hardin County, OHOH30,07237.2+12%

84Hamilton County, OHOH838,41836.9+4%

85Wood County, OHOH134,17636.8+13%

86Franklin County, OHOH1,361,53634.2+5%

87Holmes County, OHOH44,97031.1+11%

88Athens County, OHOH63,19729.5+15%

SHOWING 1–88 OF 88

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