RANKING · 2010 CENSUS · 88 SHOWN OF 88

Youngest by median age, Ohio counties · 2010

Ohio counties with the youngest median age (2023 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

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, OHOH63,19726.3+2%

02Holmes County, OHOH44,97029.7+6%

03Franklin County, OHOH1,361,53633.4+3%

04Hardin County, OHOH30,07234.7+4%

05Wood County, OHOH134,17635.3+8%

06Butler County, OHOH400,12836.0+5%

07Union County, OHOH73,44636.4+6%

08Lucas County, OHOH423,34737.0+6%

09Hamilton County, OHOH838,41837.1+5%

10Greene County, OHOH174,32237.2+4%

11Delaware County, OHOH242,03237.4+6%

12Portage County, OHOH163,40437.4+9%

13Warren County, OHOH257,18137.8+7%

14Shelby County, OHOH48,06537.9+9%

15Fairfield County, OHOH169,75238.2+6%

16Allen County, OHOH100,88138.3+6%

17Knox County, OHOH64,00238.3+5%

18Wayne County, OHOH116,75838.3+8%

19Huron County, OHOH58,25038.4+10%

20Clermont County, OHOH216,97738.5+11%

21Hancock County, OHOH75,03438.5+7%

22Pickaway County, OHOH62,97838.5+7%

23Perry County, OHOH35,91838.6+10%

24Clinton County, OHOH42,30138.7+10%

25Scioto County, OHOH71,36538.8+6%

26Seneca County, OHOH54,52238.8+7%

27Jackson County, OHOH32,81739.0+7%

28Putnam County, OHOH34,38039.0+11%

29Madison County, OHOH46,98539.1+9%

30Licking County, OHOH185,56439.1+7%

31Highland County, OHOH43,82339.2+9%

32Montgomery County, OHOH539,59839.2+8%

33Pike County, OHOH27,06139.2+11%

34Ashland County, OHOH52,52339.3+8%

35Defiance County, OHOH38,29239.4+8%

36Fayette County, OHOH28,55239.4+5%

37Mercer County, OHOH42,73739.4+10%

38Morrow County, OHOH36,30539.5+8%

39Muskingum County, OHOH87,01439.5+8%

40Adams County, OHOH27,86539.6+9%

41Vinton County, OHOH12,64539.6+12%

42Champaign County, OHOH38,82039.7+7%

43Henry County, OHOH27,59839.8+9%

44Ross County, OHOH76,42939.8+8%

45Brown County, OHOH44,39739.9+13%

46Fulton County, OHOH41,85339.9+11%

47Gallia County, OHOH29,07239.9+7%

48Marion County, OHOH65,11539.9+7%

49Logan County, OHOH46,30239.9+8%

50Auglaize County, OHOH45,90940.0+10%

51Lorain County, OHOH323,21940.0+10%

52Paulding County, OHOH18,72740.0+10%

53Summit County, OHOH538,37640.0+8%

54Lawrence County, OHOH55,71040.1+7%

55Cuyahoga County, OHOH1,232,92540.2+8%

56Van Wert County, OHOH29,01340.3+7%

57Medina County, OHOH185,02540.4+10%

58Sandusky County, OHOH58,65540.4+8%

59Clark County, OHOH135,34040.5+8%

60Wyandot County, OHOH21,56740.5+8%

61Miami County, OHOH112,63440.6+8%

62Williams County, OHOH36,54940.7+10%

63Coshocton County, OHOH37,18840.8+8%

64Darke County, OHOH51,52040.8+9%

65Guernsey County, OHOH38,37940.9+8%

66Hocking County, OHOH27,51240.9+8%

67Preble County, OHOH40,66440.9+9%

68Richland County, OHOH124,89340.9+8%

69Tuscarawas County, OHOH92,37340.9+8%

70Ashtabula County, OHOH96,71341.0+9%

71Stark County, OHOH373,77141.1+8%

72Meigs County, OHOH21,58741.2+7%

73Crawford County, OHOH41,89641.9+10%

74Columbiana County, OHOH99,37742.3+10%

75Lake County, OHOH232,21742.3+10%

76Morgan County, OHOH13,62642.4+9%

77Trumbull County, OHOH198,97242.8+10%

78Mahoning County, OHOH224,70642.9+8%

79Washington County, OHOH58,38943.0+10%

80Carroll County, OHOH26,47543.1+11%

81Geauga County, OHOH95,67643.3+12%

82Belmont County, OHOH64,43443.4+6%

83Erie County, OHOH73,29643.4+10%

84Jefferson County, OHOH63,59743.9+6%

85Harrison County, OHOH14,07044.4+8%

86Monroe County, OHOH12,99444.7+10%

87Ottawa County, OHOH39,48146.3+13%

88Noble County, OHOH14,27648.6+37%

SHOWING 1–88 OF 88

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