RANKING · 2010 CENSUS · 115 SHOWN OF 115

Oldest by median age, Missouri counties · 2010

Missouri counties ranked by median age of residents (2010 ACS). This list covers the 115 counties in Missouri that qualify, ranked against each other statewide. The median across all 115 is 40.6.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Hickory County, MOMO9,04453.0+7%

02Benton County, MOMO20,53651.5+11%

03Stone County, MOMO32,50349.9+13%

04Ozark County, MOMO9,17248.9+12%

05Camden County, MOMO44,04748.6+8%

06St. Clair County, MOMO9,97648.1+10%

07Worth County, MOMO1,91447.4+13%

08Holt County, MOMO4,20046.6+11%

09Atchison County, MOMO5,17546.2+11%

10Morgan County, MOMO22,41846.1+8%

11Dade County, MOMO7,80445.9+10%

12Chariton County, MOMO7,37745.8+8%

13Wayne County, MOMO10,78245.8+8%

14Oregon County, MOMO8,70945.4+11%

15Putnam County, MOMO4,54645.1+8%

16Douglas County, MOMO12,34245.0+12%

17Gasconade County, MOMO14,78445.0+12%

18Cedar County, MOMO14,88844.9+6%

19Reynolds County, MOMO5,99244.6+10%

20Monroe County, MOMO8,95943.8+11%

21Knox County, MOMO3,72843.6+5%

22Henry County, MOMO22,67143.5+9%

23Mercer County, MOMO3,40443.5+3%

24Ralls County, MOMO10,44443.4+10%

25Shannon County, MOMO7,28543.4+12%

26Montgomery County, MOMO11,59043.2+10%

27Dent County, MOMO14,58443.0+9%

28Maries County, MOMO8,39742.8+11%

29Iron County, MOMO9,31842.7+8%

30Harrison County, MOMO8,28142.6+2%

31Ste. Genevieve County, MOMO18,68942.6+13%

32Gentry County, MOMO6,38442.4+5%

33Clark County, MOMO6,47542.3+8%

34Macon County, MOMO15,19042.3+5%

35Shelby County, MOMO5,87042.3+5%

36Linn County, MOMO11,81542.2+5%

37Carroll County, MOMO8,41742.1+5%

38Ripley County, MOMO10,71742.1+7%

39Texas County, MOMO25,99442.1+4%

40Bollinger County, MOMO10,64642.0+11%

41Barry County, MOMO36,20041.8+9%

42Grundy County, MOMO9,74441.6+1%

43Dallas County, MOMO18,02541.4+9%

44Bates County, MOMO16,51241.3+8%

45Caldwell County, MOMO9,01241.3+6%

46Schuyler County, MOMO4,14041.3+1%

47Carter County, MOMO5,41841.2+6%

48Livingston County, MOMO14,70841.1+4%

49Stoddard County, MOMO28,28441.1+5%

50Andrew County, MOMO18,24141.0+8%

51Madison County, MOMO12,85841.0+5%

52Sullivan County, MOMO5,73840.8+5%

53Clinton County, MOMO21,66140.8+8%

54Taney County, MOMO57,00140.7+5%

55Wright County, MOMO19,67140.7+8%

56Butler County, MOMO41,90440.6+5%

57Ray County, MOMO23,39840.6+9%

58Crawford County, MOMO22,92940.6+7%

59Lafayette County, MOMO33,53140.6+7%

60New Madrid County, MOMO15,08640.4+8%

61Barton County, MOMO11,79540.3+8%

62Miller County, MOMO25,81740.2+8%

63Daviess County, MOMO8,55840.1+3%

64Vernon County, MOMO19,94640.0+8%

65DeKalb County, MOMO9,79539.9+6%

66Pike County, MOMO17,95539.9+6%

67St. Louis County, MOMO990,91139.9+6%

68Howell County, MOMO40,79839.6+4%

69Warren County, MOMO39,01639.5+6%

70Franklin County, MOMO108,09039.4+10%

71Mississippi County, MOMO12,00339.4+6%

72Dunklin County, MOMO26,85539.3+4%

73Laclede County, MOMO36,94339.3+7%

74Osage County, MOMO13,61139.3+9%

75Howard County, MOMO10,18039.2+7%

76Perry County, MOMO19,09339.2+7%

77Washington County, MOMO23,81039.2+11%

78Lawrence County, MOMO39,40139.1+6%

79Scotland County, MOMO4,79639.1+5%

80Marion County, MOMO28,52539.0+5%

81Newton County, MOMO62,26339.0+5%

82Scott County, MOMO37,97538.9+8%

83Cooper County, MOMO17,13638.7+10%

84Lewis County, MOMO9,87938.7+8%

85Audrain County, MOMO24,52838.5+1%

86Platte County, MOMO114,40038.4+7%

87St. Francois County, MOMO67,80938.2+3%

88Saline County, MOMO23,26538.2+3%

89Randolph County, MOMO24,51338.0+2%

90Cass County, MOMO115,85937.9+6%

91Jefferson County, MOMO233,13237.8+8%

92Moniteau County, MOMO15,42837.8+5%

93Polk County, MOMO33,60437.8+8%

94Cole County, MOMO77,90837.7+6%

95Callaway County, MOMO45,76537.7+9%

96Webster County, MOMO43,05437.5+8%

97Pettis County, MOMO44,25437.1+2%

98Pemiscot County, MOMO14,46537.0+8%

99Buchanan County, MOMO83,54036.9+2%

100St. Charles County, MOMO426,49936.9+8%

101McDonald County, MOMO23,99236.5+6%

102Cape Girardeau County, MOMO83,99936.4+3%

103Christian County, MOMO96,72536.3+5%

104Jackson County, MOMO732,99436.2+3%

105Clay County, MOMO265,03236.2+3%

106Greene County, MOMO309,28635.8+2%

107Lincoln County, MOMO66,67635.6+3%

108Jasper County, MOMO127,42835.1+1%

109St. Louis, MOMO278,14433.9+1%

110Phelps County, MOMO45,24733.8−3%

111Johnson County, MOMO56,67029.8+5%

112Boone County, MOMO191,74629.60%

113Nodaway County, MOMO20,17428.5−6%

114Adair County, MOMO25,68428.3+1%

115Pulaski County, MOMO54,44226.6−7%

SHOWING 1–115 OF 115

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS