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. The median across all 115 is 31. Biggest climber in the top 100 since 2020: Hickory County, MO, up 7 places to #71.

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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

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01St. Louis, MOMO278,1444,507−20%

02St. Louis County, MOMO990,9111,951−2%

03Jackson County, MOMO732,9941,213+12%

04St. Charles County, MOMO426,499761+50%

05Clay County, MOMO265,032666+44%

06Greene County, MOMO309,286458+29%

07Jefferson County, MOMO233,132355+18%

08Boone County, MOMO191,746280+42%

09Platte County, MOMO114,400272+55%

10Buchanan County, MOMO83,540205−3%

11▲1Jasper County, MOMO127,428200+22%

12▼1Cole County, MOMO77,908199+9%

13Christian County, MOMO96,725172+78%

14Cass County, MOMO115,859166+41%

15St. Francois County, MOMO67,809150+22%

16Cape Girardeau County, MOMO83,999145+22%

17Franklin County, MOMO108,090117+15%

18▲1Lincoln County, MOMO66,676106+71%

19▲1Newton County, MOMO62,263100+18%

20▼2Pulaski County, MOMO54,442100+32%

21▲2Warren County, MOMO39,01691+59%

22▼1Scott County, MOMO37,97590−6%

23▼1Taney County, MOMO57,00190+44%

24▲2Webster County, MOMO43,05473+39%

25▼1Stone County, MOMO32,50370+13%

26▲3Johnson County, MOMO56,67068+17%

27▼2Phelps County, MOMO45,24767+14%

28Camden County, MOMO44,04767+19%

29▼2Marion County, MOMO28,52565+1%

30Pettis County, MOMO44,25465+12%

31Lawrence County, MOMO39,40164+12%

32Butler County, MOMO41,90460+3%

33Callaway County, MOMO45,76555+12%

34Lafayette County, MOMO33,53153+2%

35▲3Polk County, MOMO33,60453+24%

36▲1Clinton County, MOMO21,66152+14%

37▼1Randolph County, MOMO24,51351−1%

38▼3Dunklin County, MOMO26,85550−19%

39Laclede County, MOMO36,94348+14%

40▲1Barry County, MOMO36,20047+6%

41▼1Adair County, MOMO25,68445+3%

42McDonald County, MOMO23,99244+11%

43Howell County, MOMO40,79844+10%

44▲1Miller County, MOMO25,81744+10%

45▼1Andrew County, MOMO18,24142+11%

46Ray County, MOMO23,398410%

47Perry County, MOMO19,09340+5%

48▲3Morgan County, MOMO22,41838+16%

49Ste. Genevieve County, MOMO18,68937+5%

50▼2Moniteau County, MOMO15,42837+4%

51▼1Audrain County, MOMO24,52835−5%

52Stoddard County, MOMO28,28434−5%

53▲1Dallas County, MOMO18,02533+15%

54▲1Henry County, MOMO22,67133+3%

55▲6Cedar County, MOMO14,88831+8%

56▲1Washington County, MOMO23,81031+2%

57▼1Crawford County, MOMO22,92931+1%

58Saline County, MOMO23,26531−2%

59▲1Cooper County, MOMO17,13630+3%

60▼7Pemiscot County, MOMO14,46529−28%

61▲2Benton County, MOMO20,53629+20%

62▼3Mississippi County, MOMO12,00329−11%

63▲2Wright County, MOMO19,67129+10%

64▼2Gasconade County, MOMO14,78428−4%

65▼1Livingston County, MOMO14,70828+1%

66Pike County, MOMO17,95527−2%

67▲1Madison County, MOMO12,85826+9%

68▲3Vernon County, MOMO19,94624−2%

69▼2DeKalb County, MOMO9,79523−16%

70Nodaway County, MOMO20,17423−8%

71▲7Hickory County, MOMO9,04423+1%

72▲3Osage County, MOMO13,61122+4%

73▼1Grundy County, MOMO9,74422−7%

74▼5New Madrid County, MOMO15,08622−24%

75▼2Ralls County, MOMO10,44422+8%

76▲1Texas County, MOMO25,99422+13%

77▼3Howard County, MOMO10,180220%

78▼2Montgomery County, MOMO11,59022−4%

79Caldwell County, MOMO9,012210%

80▲1Barton County, MOMO11,79520−6%

81▲2Bates County, MOMO16,51220−1%

82▼2Lewis County, MOMO9,87920−6%

83▲1Dent County, MOMO14,58419−2%

84▼2Linn County, MOMO11,81519−14%

85Macon County, MOMO15,19019−4%

86▲1Bollinger County, MOMO10,64617−11%

87▲1Ripley County, MOMO10,71717−21%

88▼2Iron County, MOMO9,31817−13%

89Maries County, MOMO8,39716−6%

90Dade County, MOMO7,80416−2%

91Daviess County, MOMO8,55815+7%

92▲1Douglas County, MOMO12,34215−6%

93▲1St. Clair County, MOMO9,97615+3%

94▼2Wayne County, MOMO10,78214−19%

95Monroe County, MOMO8,95914−4%

96▲1Schuyler County, MOMO4,14013−1%

97▲1Gentry County, MOMO6,38413−7%

98▼2Clark County, MOMO6,47513−13%

99▲2Ozark County, MOMO9,17212−4%

100▼1Carroll County, MOMO8,41712−18%

101▼1Shelby County, MOMO5,87012−14%

102Harrison County, MOMO8,28111−6%

103Oregon County, MOMO8,70911−16%

104Scotland County, MOMO4,79611−4%

105Carter County, MOMO5,41811−9%

106Chariton County, MOMO7,37710−13%

107Atchison County, MOMO5,1759−20%

108▲1Holt County, MOMO4,2009−22%

109▼1Sullivan County, MOMO5,7389−21%

110Putnam County, MOMO4,5469−13%

111Mercer County, MOMO3,4048−9%

112Reynolds County, MOMO5,9927−10%

113Knox County, MOMO3,7287−15%

114▲1Shannon County, MOMO7,2857−12%

115▼1Worth County, MOMO1,9147−20%

SHOWING 1–115 OF 115

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES