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Missouri Counties by Population (2025)

by Kristen Carney

Updated: August 7, 2025

The most populous counties in Missouri are St. Louis County with 992,929, Jackson County at 727,362, St. Charles County with 423,726, Greene County at 307,942, and St. Louis city/county with 279,695. You can get the most current Census population data for all 115 Missouri counties, sorted from the most populous counties in Missouri to the least, according to the 2024 Population Estimates Program.

Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest Missouri counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!

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RankCountyPopulation
1St. Louis County992,929
2Jackson County727,362
3St. Charles County423,726
4Greene County307,942
5St. Louis city/county279,695
6Clay County263,370
7Jefferson County231,888
8Boone County192,154
9Jasper County126,479
10Cass County113,873
11Platte County113,207
12Franklin County107,256
13Christian County96,045
14Cape Girardeau County83,658
15Buchanan County83,574
16Cole County77,625
17St. Francois County67,503
18Lincoln County65,888
19Newton County61,519
20Taney County56,744
21Johnson County55,880
22Pulaski County53,964
23Phelps County45,672
24Callaway County45,126
25Camden County44,135
26Pettis County43,791
27Webster County42,041
28Butler County41,814
29Howell County40,762
30Lawrence County39,151
31Warren County38,478
32Scott County37,957
33Laclede County36,738
34Barry County35,618
35Lafayette County33,511
36Polk County33,070
37Stone County32,630
38Stoddard County28,438
39Marion County28,425
40Dunklin County27,002
41Texas County25,715
42Miller County25,668
43Adair County25,660
44Audrain County24,304
45Randolph County24,077
46McDonald County24,054
47Washington County23,583
48Saline County23,325
49Ray County23,199
50Crawford County22,808
51Henry County22,575
52Morgan County22,399
53Clinton County21,721
54Benton County20,614
55Nodaway County20,503
56Vernon County19,787
57Wright County19,505
58Perry County19,100
59Ste. Genevieve County18,546
60Andrew County18,091
61Pike County17,961
62Dallas County17,877
63Cooper County17,122
64Bates County16,394
65Moniteau County15,294
66New Madrid County15,212
67Macon County15,177
68Cedar County15,023
69Dent County14,721
70Livingston County14,658
71Gasconade County14,655
72Pemiscot County14,407
73Osage County13,478
74Madison County12,852
75Douglas County12,290
76Linn County11,910
77Mississippi County11,750
78Barton County11,717
79Montgomery County11,511
80Wayne County10,820
81Ripley County10,715
82Bollinger County10,610
83Ralls County10,499
84Howard County10,150
85DeKalb County9,884
86Lewis County9,852
87St. Clair County9,848
88Grundy County9,766
89Iron County9,420
90Ozark County9,090
91Caldwell County9,000
92Monroe County8,890
93Hickory County8,766
94Oregon County8,699
95Daviess County8,541
96Maries County8,506
97Carroll County8,414
98Harrison County8,186
99Dade County7,622
100Chariton County7,397
101Shannon County7,275
102Clark County6,623
103Gentry County6,298
104Reynolds County5,927
105Shelby County5,926
106Sullivan County5,750
107Carter County5,359
108Atchison County5,139
109Scotland County4,698
110Putnam County4,539
111Holt County4,241
112Schuyler County4,069
113Knox County3,740
114Mercer County3,452
115Worth County1,872

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2024. Population Division. May 2025.

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