RANKING · 2020 CENSUS · 88 SHOWN OF 88

Youngest by median age, Ohio counties · 2020

Ohio counties with the youngest median age (2023 ACS). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

Flip the list · Oldest by median age, US counties →

OhioAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDOldest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Athens County, OHOH63,19729.5+15%

02Holmes County, OHOH44,97031.1+11%

03Franklin County, OHOH1,361,53634.2+5%

04Wood County, OHOH134,17636.8+13%

05Hamilton County, OHOH838,41836.9+4%

06Hardin County, OHOH30,07237.2+12%

07Butler County, OHOH400,12837.4+9%

08Union County, OHOH73,44638.0+10%

09Greene County, OHOH174,32238.1+7%

10Lucas County, OHOH423,34738.9+11%

11Wayne County, OHOH116,75839.0+10%

12Mercer County, OHOH42,73739.1+10%

13Delaware County, OHOH242,03239.4+12%

14Montgomery County, OHOH539,59839.6+9%

15Fairfield County, OHOH169,75239.7+10%

16Knox County, OHOH64,00239.7+9%

17Portage County, OHOH163,40439.8+16%

18Warren County, OHOH257,18140.0+14%

19Allen County, OHOH100,88140.2+11%

20Putnam County, OHOH34,38040.2+15%

21Shelby County, OHOH48,06540.2+16%

22Hancock County, OHOH75,03440.3+12%

23Pickaway County, OHOH62,97840.3+12%

24Noble County, OHOH14,27640.4+14%

25Licking County, OHOH185,56440.4+10%

26Cuyahoga County, OHOH1,232,92540.5+9%

27Seneca County, OHOH54,52240.6+12%

28Clermont County, OHOH216,97740.7+17%

29Jackson County, OHOH32,81740.8+12%

30Clinton County, OHOH42,30140.9+16%

31Huron County, OHOH58,25041.0+17%

32Muskingum County, OHOH87,01441.0+12%

33Perry County, OHOH35,91841.0+17%

34Van Wert County, OHOH29,01341.0+9%

35Madison County, OHOH46,98541.1+15%

36Coshocton County, OHOH37,18841.2+9%

37Marion County, OHOH65,11541.2+11%

38Pike County, OHOH27,06141.2+17%

39Scioto County, OHOH71,36541.2+12%

40Auglaize County, OHOH45,90941.3+13%

41Highland County, OHOH43,82341.3+14%

42Miami County, OHOH112,63441.3+10%

43Paulding County, OHOH18,72741.3+13%

44Defiance County, OHOH38,29241.4+13%

45Ross County, OHOH76,42941.4+12%

46Ashland County, OHOH52,52341.5+14%

47Fayette County, OHOH28,55241.5+11%

48Gallia County, OHOH29,07241.5+11%

49Tuscarawas County, OHOH92,37341.6+10%

50Summit County, OHOH538,37641.6+12%

51Richland County, OHOH124,89341.7+11%

52Fulton County, OHOH41,85341.8+16%

53Clark County, OHOH135,34042.0+12%

54Adams County, OHOH27,86542.2+16%

55Stark County, OHOH373,77142.2+10%

56Henry County, OHOH27,59842.3+16%

57Williams County, OHOH36,54942.3+15%

58Darke County, OHOH51,52042.5+14%

59Champaign County, OHOH38,82042.6+15%

60Lorain County, OHOH323,21942.6+17%

61Morrow County, OHOH36,30542.7+17%

62Logan County, OHOH46,30242.9+16%

63Brown County, OHOH44,39743.1+22%

64Lawrence County, OHOH55,71043.1+15%

65Medina County, OHOH185,02543.1+18%

66Guernsey County, OHOH38,37943.2+15%

67Sandusky County, OHOH58,65543.2+16%

68Preble County, OHOH40,66443.4+16%

69Wyandot County, OHOH21,56743.5+16%

70Ashtabula County, OHOH96,71343.6+16%

71Hocking County, OHOH27,51243.6+16%

72Vinton County, OHOH12,64543.6+23%

73Mahoning County, OHOH224,70644.2+11%

74Washington County, OHOH58,38944.3+13%

75Crawford County, OHOH41,89644.5+16%

76Meigs County, OHOH21,58744.6+16%

77Jefferson County, OHOH63,59744.6+7%

78Lake County, OHOH232,21744.7+16%

79Trumbull County, OHOH198,97244.9+15%

80Columbiana County, OHOH99,37745.1+17%

81Belmont County, OHOH64,43445.2+11%

82Morgan County, OHOH13,62645.7+17%

83Geauga County, OHOH95,67645.8+18%

84Erie County, OHOH73,29646.1+17%

85Carroll County, OHOH26,47546.2+19%

86Harrison County, OHOH14,07046.6+13%

87Monroe County, OHOH12,99447.4+16%

88Ottawa County, OHOH39,48150.0+22%

SHOWING 1–88 OF 88

Download CSV (full list, 88 rows)

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