RANKING · 2025 ESTIMATES · 115 SHOWN OF 115

Most densely populated, Missouri counties

Missouri counties ranked by residents per square mile (2025). This list covers the 115 counties in Missouri that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most sparsely populated

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01St. Louis, MOMO278,1444,507–

02St. Louis County, MOMO990,9111,951–

03Jackson County, MOMO732,9941,213–

04St. Charles County, MOMO426,499761–

05Clay County, MOMO265,032666–

06Greene County, MOMO309,286458–

07Jefferson County, MOMO233,132355–

08Boone County, MOMO191,746280–

09Platte County, MOMO114,400272–

10Buchanan County, MOMO83,540205–

11Jasper County, MOMO127,428200–

12Cole County, MOMO77,908199–

13Christian County, MOMO96,725172–

14Cass County, MOMO115,859166–

15St. Francois County, MOMO67,809150–

16Cape Girardeau County, MOMO83,999145–

17Franklin County, MOMO108,090117–

18Lincoln County, MOMO66,676106–

19Newton County, MOMO62,263100–

20Pulaski County, MOMO54,442100–

21Warren County, MOMO39,01691–

22Scott County, MOMO37,97590–

23Taney County, MOMO57,00190–

24Webster County, MOMO43,05473–

25Stone County, MOMO32,50370–

26Johnson County, MOMO56,67068–

27Phelps County, MOMO45,24767–

28Camden County, MOMO44,04767–

29Marion County, MOMO28,52565–

30Pettis County, MOMO44,25465–

31Lawrence County, MOMO39,40164–

32Butler County, MOMO41,90460–

33Callaway County, MOMO45,76555–

34Lafayette County, MOMO33,53153–

35Polk County, MOMO33,60453–

36Clinton County, MOMO21,66152–

37Randolph County, MOMO24,51351–

38Dunklin County, MOMO26,85550–

39Laclede County, MOMO36,94348–

40Barry County, MOMO36,20047–

41Adair County, MOMO25,68445–

42McDonald County, MOMO23,99244–

43Howell County, MOMO40,79844–

44Miller County, MOMO25,81744–

45Andrew County, MOMO18,24142–

46Ray County, MOMO23,39841–

47Perry County, MOMO19,09340–

48Morgan County, MOMO22,41838–

49Ste. Genevieve County, MOMO18,68937–

50Moniteau County, MOMO15,42837–

51Audrain County, MOMO24,52835–

52Stoddard County, MOMO28,28434–

53Dallas County, MOMO18,02533–

54Henry County, MOMO22,67133–

55Cedar County, MOMO14,88831–

56Washington County, MOMO23,81031–

57Crawford County, MOMO22,92931–

58Saline County, MOMO23,26531–

59Cooper County, MOMO17,13630–

60Pemiscot County, MOMO14,46529–

61Benton County, MOMO20,53629–

62Mississippi County, MOMO12,00329–

63Wright County, MOMO19,67129–

64Gasconade County, MOMO14,78428–

65Livingston County, MOMO14,70828–

66Pike County, MOMO17,95527–

67Madison County, MOMO12,85826–

68Vernon County, MOMO19,94624–

69DeKalb County, MOMO9,79523–

70Nodaway County, MOMO20,17423–

71Hickory County, MOMO9,04423–

72Osage County, MOMO13,61122–

73Grundy County, MOMO9,74422–

74New Madrid County, MOMO15,08622–

75Ralls County, MOMO10,44422–

76Texas County, MOMO25,99422–

77Howard County, MOMO10,18022–

78Montgomery County, MOMO11,59022–

79Caldwell County, MOMO9,01221–

80Barton County, MOMO11,79520–

81Bates County, MOMO16,51220–

82Lewis County, MOMO9,87920–

83Dent County, MOMO14,58419–

84Linn County, MOMO11,81519–

85Macon County, MOMO15,19019–

86Bollinger County, MOMO10,64617–

87Ripley County, MOMO10,71717–

88Iron County, MOMO9,31817–

89Maries County, MOMO8,39716–

90Dade County, MOMO7,80416–

91Daviess County, MOMO8,55815–

92Douglas County, MOMO12,34215–

93St. Clair County, MOMO9,97615–

94Wayne County, MOMO10,78214–

95Monroe County, MOMO8,95914–

96Schuyler County, MOMO4,14013–

97Gentry County, MOMO6,38413–

98Clark County, MOMO6,47513–

99Ozark County, MOMO9,17212–

100Carroll County, MOMO8,41712–

101Shelby County, MOMO5,87012–

102Harrison County, MOMO8,28111–

103Oregon County, MOMO8,70911–

104Scotland County, MOMO4,79611–

105Carter County, MOMO5,41811–

106Chariton County, MOMO7,37710–

107Atchison County, MOMO5,1759–

108Holt County, MOMO4,2009–

109Sullivan County, MOMO5,7389–

110Putnam County, MOMO4,5469–

111Mercer County, MOMO3,4048–

112Reynolds County, MOMO5,9927–

113Knox County, MOMO3,7287–

114Shannon County, MOMO7,2857–

115Worth County, MOMO1,9147–

SHOWING 1–115 OF 115

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES