Ranking of Missouri Counties By Total Population from Census 2020
Updated on February 7, 2023.
According to the data from the US 2020 Census, the most populated Missouri county as at April 2020 was St. Louis County (1.00M), followed by Jackson County (717.20K), and St. Charles County (405.26K).
The chart below shows the top 10 most populated counties, and the table below shows the ranking of all the counties in the state of Missouri.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Missouri Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Missouri Counties By Total Population from Census 2020
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| Rank | County | Population |
|---|---|---|
| 1 | St. Louis County | 1004125 |
| 2 | Jackson County | 717204 |
| 3 | St. Charles County | 405262 |
| 4 | St. Louis city | 301578 |
| 5 | Greene County | 298915 |
| 6 | Clay County | 253335 |
| 7 | Jefferson County | 226739 |
| 8 | Boone County | 183610 |
| 9 | Jasper County | 122761 |
| 10 | Cass County | 107824 |
| 11 | Platte County | 106718 |
| 12 | Franklin County | 104682 |
| 13 | Christian County | 88842 |
| 14 | Buchanan County | 84793 |
| 15 | Cape Girardeau County | 81710 |
| 16 | Cole County | 77279 |
| 17 | St. Francois County | 66922 |
| 18 | Lincoln County | 59574 |
| 19 | Newton County | 58648 |
| 20 | Taney County | 56066 |
| 21 | Johnson County | 54013 |
| 22 | Pulaski County | 53955 |
| 23 | Phelps County | 44638 |
| 24 | Callaway County | 44283 |
| 25 | Pettis County | 42980 |
| 26 | Camden County | 42745 |
| 27 | Butler County | 42130 |
| 28 | Howell County | 39750 |
| 29 | Webster County | 39085 |
| 30 | Scott County | 38059 |
| 31 | Lawrence County | 38001 |
| 32 | Laclede County | 36039 |
| 33 | Warren County | 35532 |
| 34 | Barry County | 34534 |
| 35 | Lafayette County | 32984 |
| 36 | Polk County | 31519 |
| 37 | Stone County | 31076 |
| 38 | Stoddard County | 28672 |
| 39 | Marion County | 28525 |
| 40 | Dunklin County | 28283 |
| 41 | Adair County | 25314 |
| 42 | Audrain County | 24962 |
| 43 | Miller County | 24722 |
| 44 | Randolph County | 24716 |
| 45 | Texas County | 24487 |
| 46 | Washington County | 23514 |
| 47 | Saline County | 23333 |
| 48 | McDonald County | 23303 |
| 49 | Ray County | 23158 |
| 50 | Crawford County | 23056 |
| 51 | Henry County | 21946 |
| 52 | Nodaway County | 21241 |
| 53 | Clinton County | 21184 |
| 54 | Morgan County | 21006 |
| 55 | Vernon County | 19707 |
| 56 | Benton County | 19394 |
| 57 | Perry County | 18956 |
| 58 | Ste. Genevieve County | 18479 |
| 59 | Wright County | 18188 |
| 60 | Andrew County | 18135 |
| 61 | Pike County | 17587 |
| 62 | Cooper County | 17103 |
| 63 | Dallas County | 17071 |
| 64 | New Madrid County | 16434 |
| 65 | Bates County | 16042 |
| 66 | Pemiscot County | 15661 |
| 67 | Moniteau County | 15473 |
| 68 | Macon County | 15209 |
| 69 | Gasconade County | 14794 |
| 70 | Livingston County | 14557 |
| 71 | Dent County | 14421 |
| 72 | Cedar County | 14188 |
| 73 | Osage County | 13274 |
| 74 | Madison County | 12626 |
| 75 | Mississippi County | 12577 |
| 76 | Linn County | 11874 |
| 77 | Barton County | 11637 |
| 78 | Douglas County | 11578 |
| 79 | Montgomery County | 11322 |
| 80 | DeKalb County | 11029 |
| 81 | Wayne County | 10974 |
| 82 | Ripley County | 10679 |
| 83 | Bollinger County | 10567 |
| 84 | Ralls County | 10355 |
| 85 | Howard County | 10151 |
| 86 | Lewis County | 10032 |
| 87 | Grundy County | 9808 |
| 88 | Iron County | 9537 |
| 89 | St. Clair County | 9284 |
| 90 | Caldwell County | 8815 |
| 91 | Monroe County | 8666 |
| 92 | Oregon County | 8635 |
| 93 | Ozark County | 8553 |
| 94 | Carroll County | 8495 |
| 95 | Maries County | 8432 |
| 96 | Daviess County | 8430 |
| 97 | Hickory County | 8279 |
| 98 | Harrison County | 8157 |
| 99 | Dade County | 7569 |
| 100 | Chariton County | 7408 |
| 101 | Shannon County | 7031 |
| 102 | Clark County | 6634 |
| 103 | Gentry County | 6162 |
| 104 | Shelby County | 6103 |
| 105 | Reynolds County | 6096 |
| 106 | Sullivan County | 5999 |
| 107 | Atchison County | 5305 |
| 108 | Carter County | 5202 |
| 109 | Scotland County | 4716 |
| 110 | Putnam County | 4681 |
| 111 | Holt County | 4223 |
| 112 | Schuyler County | 4032 |
| 113 | Knox County | 3744 |
| 114 | Mercer County | 3538 |
| 115 | Worth County | 1973 |