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.

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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

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, MOMO191,74629.6+0%

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