RANKING · 1990 CENSUS · 115 SHOWN OF 115

Most densely populated, Missouri counties · 1990

Missouri counties ranked by residents per square mile (1990). This list covers the 115 counties in Missouri that qualify, ranked against each other statewide. The median across all 115 is 27.

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SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01St. Louis, MOMO278,1446,427–

02St. Louis County, MOMO990,9111,956–

03Jackson County, MOMO732,9941,047–

04Clay County, MOMO265,032386–

05St. Charles County, MOMO426,499380–

06Greene County, MOMO309,286308–

07Jefferson County, MOMO233,132261–

08Buchanan County, MOMO83,540204–

09Boone County, MOMO191,746164–

10Cole County, MOMO77,908162–

11Jasper County, MOMO127,428142–

12Platte County, MOMO114,400138–

13St. Francois County, MOMO67,809108–

14Cape Girardeau County, MOMO83,999107–

15Scott County, MOMO37,97594–

16Cass County, MOMO115,85992–

17Franklin County, MOMO108,09087–

18Pulaski County, MOMO54,44276–

19Newton County, MOMO62,26371–

20Marion County, MOMO28,52563–

21Dunklin County, MOMO26,85561–

22Christian County, MOMO96,72558–

23Butler County, MOMO41,90456–

24Phelps County, MOMO45,24752–

25Pettis County, MOMO44,25452–

26Johnson County, MOMO56,67051–

27Randolph County, MOMO24,51350–

28Lafayette County, MOMO33,53150–

29Lawrence County, MOMO39,40149–

30Lincoln County, MOMO66,67646–

31Warren County, MOMO39,01646–

32Pemiscot County, MOMO14,46545–

33Adair County, MOMO25,68443–

34Camden County, MOMO44,04742–

35Stone County, MOMO32,50341–

36Taney County, MOMO57,00140–

37Webster County, MOMO43,05440–

38Clinton County, MOMO21,66140–

39Callaway County, MOMO45,76539–

40Ray County, MOMO23,39839–

41Laclede County, MOMO36,94336–

42Barry County, MOMO36,20035–

43Stoddard County, MOMO28,28435–

44Perry County, MOMO19,09335–

45Mississippi County, MOMO12,00335–

46Miller County, MOMO25,81735–

47Polk County, MOMO33,60434–

48Audrain County, MOMO24,52834–

49Howell County, MOMO40,79834–

50Andrew County, MOMO18,24134–

51Ste. Genevieve County, MOMO18,68932–

52McDonald County, MOMO23,99231–

53Saline County, MOMO23,26531–

54New Madrid County, MOMO15,08631–

55Moniteau County, MOMO15,42830–

56Henry County, MOMO22,67129–

57Livingston County, MOMO14,70827–

58Gasconade County, MOMO14,78427–

59Washington County, MOMO23,81027–

60Cooper County, MOMO17,13626–

61Morgan County, MOMO22,41826–

62Crawford County, MOMO22,92926–

63Cedar County, MOMO14,88825–

64Nodaway County, MOMO20,17425–

65Wright County, MOMO19,67125–

66Grundy County, MOMO9,74424–

67Pike County, MOMO17,95524–

68DeKalb County, MOMO9,79524–

69Dallas County, MOMO18,02523–

70Vernon County, MOMO19,94623–

71Linn County, MOMO11,81523–

72Madison County, MOMO12,85823–

73Montgomery County, MOMO11,59021–

74Howard County, MOMO10,18021–

75Lewis County, MOMO9,87920–

76Osage County, MOMO13,61120–

77Benton County, MOMO20,53620–

78Caldwell County, MOMO9,01220–

79Ripley County, MOMO10,71720–

80Iron County, MOMO9,31819–

81Macon County, MOMO15,19019–

82Barton County, MOMO11,79519–

83Hickory County, MOMO9,04418–

84Texas County, MOMO25,99418–

85Dent County, MOMO14,58418–

86Ralls County, MOMO10,44418–

87Bates County, MOMO16,51218–

88Bollinger County, MOMO10,64617–

89Carroll County, MOMO8,41715–

90Wayne County, MOMO10,78215–

91Dade County, MOMO7,80415–

92Maries County, MOMO8,39715–

93Clark County, MOMO6,47515–

94Douglas County, MOMO12,34215–

95Monroe County, MOMO8,95914–

96Daviess County, MOMO8,55814–

97Gentry County, MOMO6,38414–

98Shelby County, MOMO5,87014–

99Schuyler County, MOMO4,14014–

100Atchison County, MOMO5,17514–

101Holt County, MOMO4,20013–

102St. Clair County, MOMO9,97613–

103Chariton County, MOMO7,37712–

104Oregon County, MOMO8,70912–

105Harrison County, MOMO8,28112–

106Ozark County, MOMO9,17212–

107Scotland County, MOMO4,79611–

108Carter County, MOMO5,41811–

109Putnam County, MOMO4,54610–

110Sullivan County, MOMO5,73810–

111Worth County, MOMO1,9149–

112Knox County, MOMO3,7289–

113Reynolds County, MOMO5,9928–

114Mercer County, MOMO3,4048–

115Shannon County, MOMO7,2858–

SHOWING 1–115 OF 115

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