RANKING · 1990 CENSUS · 88 SHOWN OF 88

Youngest by median age, Ohio counties · 1990

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, OHOH63,19725.5−1%

02Holmes County, OHOH44,97027.7−1%

03Wood County, OHOH134,17629.3−10%

04Portage County, OHOH163,40430.2−12%

05Putnam County, OHOH34,38030.6−13%

06Franklin County, OHOH1,361,53630.9−5%

07Clermont County, OHOH216,97731.2−10%

08Butler County, OHOH400,12831.5−8%

09Shelby County, OHOH48,06531.7−9%

10Hardin County, OHOH30,07231.7−5%

11Mercer County, OHOH42,73731.9−11%

12Paulding County, OHOH18,72732.0−12%

13Wayne County, OHOH116,75832.2−9%

14Huron County, OHOH58,25032.2−8%

15Greene County, OHOH174,32232.4−9%

16Madison County, OHOH46,98532.4−9%

17Lucas County, OHOH423,34732.6−7%

18Seneca County, OHOH54,52232.6−10%

19Perry County, OHOH35,91832.6−7%

20Fulton County, OHOH41,85332.7−9%

21Defiance County, OHOH38,29232.7−10%

22Warren County, OHOH257,18132.8−7%

23Lorain County, OHOH323,21932.8−10%

24Hamilton County, OHOH838,41832.8−8%

25Clinton County, OHOH42,30132.8−7%

26Brown County, OHOH44,39732.8−7%

27Adams County, OHOH27,86532.8−10%

28Pickaway County, OHOH62,97832.8−9%

29Auglaize County, OHOH45,90932.8−10%

30Union County, OHOH73,44632.9−5%

31Allen County, OHOH100,88133.0−9%

32Pike County, OHOH27,06133.0−7%

33Morrow County, OHOH36,30533.0−9%

34Hancock County, OHOH75,03433.1−8%

35Henry County, OHOH27,59833.1−9%

36Sandusky County, OHOH58,65533.2−11%

37Ashland County, OHOH52,52333.2−8%

38Medina County, OHOH185,02533.3−9%

39Williams County, OHOH36,54933.4−10%

40Delaware County, OHOH242,03233.4−5%

41Montgomery County, OHOH539,59833.4−8%

42Muskingum County, OHOH87,01433.4−8%

43Gallia County, OHOH29,07233.5−10%

44Vinton County, OHOH12,64533.5−6%

45Marion County, OHOH65,11533.6−10%

46Licking County, OHOH185,56433.6−8%

47Fairfield County, OHOH169,75233.6−7%

48Logan County, OHOH46,30233.6−9%

49Noble County, OHOH14,27633.6−5%

50Preble County, OHOH40,66433.7−10%

51Ross County, OHOH76,42933.8−8%

52Darke County, OHOH51,52033.9−9%

53Jackson County, OHOH32,81734.0−6%

54Van Wert County, OHOH29,01334.0−10%

55Wyandot County, OHOH21,56734.0−9%

56Morgan County, OHOH13,62634.1−12%

57Knox County, OHOH64,00234.1−6%

58Lawrence County, OHOH55,71034.2−9%

59Highland County, OHOH43,82334.2−5%

60Scioto County, OHOH71,36534.3−7%

61Lake County, OHOH232,21734.3−11%

62Hocking County, OHOH27,51234.3−9%

63Champaign County, OHOH38,82034.3−7%

64Summit County, OHOH538,37634.3−8%

65Clark County, OHOH135,34034.3−9%

66Miami County, OHOH112,63434.3−9%

67Carroll County, OHOH26,47534.4−11%

68Richland County, OHOH124,89334.4−9%

69Ashtabula County, OHOH96,71334.4−8%

70Crawford County, OHOH41,89634.5−10%

71Geauga County, OHOH95,67634.5−11%

72Coshocton County, OHOH37,18834.7−8%

73Guernsey County, OHOH38,37934.7−8%

74Fayette County, OHOH28,55234.9−7%

75Cuyahoga County, OHOH1,232,92534.9−6%

76Erie County, OHOH73,29635.0−12%

77Tuscarawas County, OHOH92,37335.0−8%

78Washington County, OHOH58,38935.0−11%

79Columbiana County, OHOH99,37735.0−9%

80Stark County, OHOH373,77135.0−8%

81Meigs County, OHOH21,58735.1−9%

82Trumbull County, OHOH198,97235.6−9%

83Mahoning County, OHOH224,70636.3−9%

84Monroe County, OHOH12,99436.4−11%

85Ottawa County, OHOH39,48136.5−11%

86Harrison County, OHOH14,07036.7−11%

87Jefferson County, OHOH63,59737.7−9%

88Belmont County, OHOH64,43437.9−7%

SHOWING 1–88 OF 88

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