RANKING · 2025 ESTIMATES · 115 SHOWN OF 115

Largest by population, Missouri counties

The most populous Missouri counties as of the 2025 population estimates. This list covers the 115 counties in Missouri that qualify, ranked against each other statewide. The median across all 115 is 19,093. Biggest climber in the top 100 since 2020: Hickory County, MO, up 6 places to #91.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01St. Louis County, MOMO990,911−2%

02Jackson County, MOMO732,994+12%

03St. Charles County, MOMO426,499+50%

04▲1Greene County, MOMO309,286+29%

05▼1St. Louis, MOMO278,144−20%

06Clay County, MOMO265,032+44%

07Jefferson County, MOMO233,132+18%

08Boone County, MOMO191,746+42%

09Jasper County, MOMO127,428+22%

10Cass County, MOMO115,859+41%

11Platte County, MOMO114,400+55%

12Franklin County, MOMO108,090+15%

13Christian County, MOMO96,725+78%

14▲1Cape Girardeau County, MOMO83,999+22%

15▼1Buchanan County, MOMO83,540−3%

16Cole County, MOMO77,908+9%

17St. Francois County, MOMO67,809+22%

18Lincoln County, MOMO66,676+71%

19Newton County, MOMO62,263+18%

20Taney County, MOMO57,001+44%

21Johnson County, MOMO56,670+17%

22Pulaski County, MOMO54,442+32%

23▲1Callaway County, MOMO45,765+12%

24▼1Phelps County, MOMO45,247+14%

25Pettis County, MOMO44,254+12%

26Camden County, MOMO44,047+19%

27▲2Webster County, MOMO43,054+39%

28▼1Butler County, MOMO41,904+3%

29▼1Howell County, MOMO40,798+10%

30▲1Lawrence County, MOMO39,401+12%

31▲2Warren County, MOMO39,016+59%

32▼2Scott County, MOMO37,975−6%

33▼1Laclede County, MOMO36,943+14%

34Barry County, MOMO36,200+6%

35▲1Polk County, MOMO33,604+24%

36▼1Lafayette County, MOMO33,531+2%

37Stone County, MOMO32,503+13%

38▲1Marion County, MOMO28,525+1%

39▼1Stoddard County, MOMO28,284−5%

40Dunklin County, MOMO26,855−19%

41▲4Texas County, MOMO25,994+13%

42▲1Miller County, MOMO25,817+10%

43▼2Adair County, MOMO25,684+3%

44▼2Audrain County, MOMO24,528−5%

45▼1Randolph County, MOMO24,513−1%

46▲2McDonald County, MOMO23,992+11%

47▼1Washington County, MOMO23,810+2%

48▲1Ray County, MOMO23,3980%

49▼2Saline County, MOMO23,265−2%

50Crawford County, MOMO22,929+1%

51Henry County, MOMO22,671+3%

52▲2Morgan County, MOMO22,418+16%

53Clinton County, MOMO21,661+14%

54▲2Benton County, MOMO20,536+20%

55▼3Nodaway County, MOMO20,174−8%

56▼1Vernon County, MOMO19,946−2%

57▲2Wright County, MOMO19,671+10%

58▼1Perry County, MOMO19,093+5%

59▼1Ste. Genevieve County, MOMO18,689+5%

60Andrew County, MOMO18,241+11%

61▲2Dallas County, MOMO18,025+15%

62▼1Pike County, MOMO17,955−2%

63▼1Cooper County, MOMO17,136+3%

64▲1Bates County, MOMO16,512−1%

65▲2Moniteau County, MOMO15,428+4%

66▲2Macon County, MOMO15,190−4%

67▼3New Madrid County, MOMO15,086−24%

68▲4Cedar County, MOMO14,888+8%

69Gasconade County, MOMO14,784−4%

70Livingston County, MOMO14,708+1%

71Dent County, MOMO14,584−2%

72▼6Pemiscot County, MOMO14,465−28%

73Osage County, MOMO13,611+4%

74Madison County, MOMO12,858+9%

75▲3Douglas County, MOMO12,342−6%

76▼1Mississippi County, MOMO12,003−11%

77▼1Linn County, MOMO11,815−14%

78▼1Barton County, MOMO11,795−6%

79Montgomery County, MOMO11,590−4%

80▲1Wayne County, MOMO10,782−19%

81▲1Ripley County, MOMO10,717−21%

82▲1Bollinger County, MOMO10,646−11%

83▲1Ralls County, MOMO10,444+8%

84▲1Howard County, MOMO10,1800%

85▲4St. Clair County, MOMO9,976+3%

86Lewis County, MOMO9,879−6%

87▼7DeKalb County, MOMO9,795−16%

88▼1Grundy County, MOMO9,744−7%

89▼1Iron County, MOMO9,318−13%

90▲3Ozark County, MOMO9,172−4%

91▲6Hickory County, MOMO9,044+1%

92▼2Caldwell County, MOMO9,0120%

93▼2Monroe County, MOMO8,959−4%

94▼2Oregon County, MOMO8,709−16%

95▲1Daviess County, MOMO8,558+7%

96▼2Carroll County, MOMO8,417−18%

97▼2Maries County, MOMO8,397−6%

98Harrison County, MOMO8,281−6%

99Dade County, MOMO7,804−2%

100Chariton County, MOMO7,377−13%

101Shannon County, MOMO7,285−12%

102Clark County, MOMO6,475−13%

103Gentry County, MOMO6,384−7%

104▲1Reynolds County, MOMO5,992−10%

105▼1Shelby County, MOMO5,870−14%

106Sullivan County, MOMO5,738−21%

107▲1Carter County, MOMO5,418−9%

108▼1Atchison County, MOMO5,175−20%

109Scotland County, MOMO4,796−4%

110Putnam County, MOMO4,546−13%

111Holt County, MOMO4,200−22%

112Schuyler County, MOMO4,140−1%

113Knox County, MOMO3,728−15%

114Mercer County, MOMO3,404−9%

115Worth County, MOMO1,914−20%

SHOWING 1–115 OF 115

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