Missouri Counties by Population

Below are the 115 Missouri counties sorted by population from largest to smallest. The population data are from the 2022 Population Estimates Program and 2021 American Community Survey.

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Rank County Population
1 St. Louis County 990,414
2 Jackson County 716,531
3 St. Charles County 413,803
4 Greene County 303,293
5 St. Louis city/county 286,578
6 Clay County 257,033
7 Jefferson County 229,336
8 Boone County 187,690
9 Jasper County 124,075
10 Platte County 110,534
11 Cass County 110,394
12 Franklin County 105,879
13 Christian County 93,114
14 Buchanan County 82,911
15 Cape Girardeau County 82,899
16 Cole County 76,969
17 St. Francois County 66,969
18 Lincoln County 63,155
19 Newton County 60,011
20 Taney County 56,821
21 Johnson County 54,368
22 Pulaski County 53,941
23 Phelps County 45,313
24 Callaway County 44,762
25 Camden County 43,768
26 Pettis County 43,353
27 Butler County 42,179
28 Howell County 40,631
29 Webster County 40,335
30 Lawrence County 38,683
31 Scott County 37,840
32 Warren County 37,260
33 Laclede County 36,313
34 Barry County 34,926
35 Lafayette County 32,961
36 Polk County 32,693
37 Stone County 32,136
38 Marion County 28,438
39 Stoddard County 28,377
40 Dunklin County 27,406
41 Miller County 25,403
42 Texas County 25,336
43 Adair County 25,165
44 Randolph County 24,622
45 Audrain County 24,434
46 McDonald County 23,588
47 Washington County 23,441
48 Ray County 23,107
49 Saline County 23,007
50 Crawford County 22,659
51 Henry County 22,438
52 Morgan County 21,785
53 Clinton County 21,328
54 Nodaway County 20,670
55 Benton County 20,224
56 Vernon County 19,651
57 Wright County 19,156
58 Perry County 18,858
59 Ste. Genevieve County 18,644
60 Andrew County 18,003
61 Pike County 17,664
62 Dallas County 17,626
63 Cooper County 16,772
64 Bates County 16,177
65 New Madrid County 15,695
66 Moniteau County 15,220
67 Macon County 15,049
68 Pemiscot County 14,841
69 Gasconade County 14,768
70 Cedar County 14,601
71 Dent County 14,467
72 Livingston County 14,402
73 Osage County 13,399
74 Madison County 12,753
75 Douglas County 11,975
76 Linn County 11,820
77 Barton County 11,694
78 Mississippi County 11,688
79 Montgomery County 11,470
80 DeKalb County 11,336
81 Wayne County 10,792
82 Ripley County 10,703
83 Bollinger County 10,518
84 Ralls County 10,420
85 Howard County 10,168
86 Lewis County 9,891
87 Grundy County 9,838
88 St. Clair County 9,576
89 Iron County 9,414
90 Ozark County 8,940
91 Caldwell County 8,933
92 Oregon County 8,732
93 Monroe County 8,652
94 Hickory County 8,630
95 Daviess County 8,435
96 Maries County 8,431
97 Carroll County 8,423
98 Harrison County 8,199
99 Dade County 7,660
100 Chariton County 7,386
101 Shannon County 7,193
102 Clark County 6,723
103 Gentry County 6,253
104 Reynolds County 6,006
105 Shelby County 5,982
106 Sullivan County 5,840
107 Carter County 5,268
108 Atchison County 5,182
109 Putnam County 4,666
110 Scotland County 4,643
111 Holt County 4,262
112 Schuyler County 4,002
113 Knox County 3,776
114 Mercer County 3,437
115 Worth County 1,955

United States Census Bureau. B01001 SEX BY AGE, 2021 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 8 December 2022. http://www.census.gov/.

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2022. U.S. Census Bureau, Population Division. Web. May 2023. http://www.census.gov/.

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