Ranking of Missouri Counties By Population in 2012
Updated on June 21, 2025.
Based on the US Census Vintage data estimates, in 2012, the Population for Missouri was 6.03M. Among all Missouri counties, St. Louis County had the highest population (1.00M), followed by Jackson County (677.57K), and St. Charles County (369.18K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Missouri counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Missouri Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2012 Census.
See this for other years:
Ranking of Missouri Counties By Population in 2012
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| Rank | County | Population |
|---|---|---|
| 1 | St. Louis County | 1000975 |
| 2 | Jackson County | 677570 |
| 3 | St. Charles County | 369175 |
| 4 | St. Louis city | 319534 |
| 5 | Greene County | 280550 |
| 6 | Clay County | 227636 |
| 7 | Jefferson County | 219885 |
| 8 | Boone County | 168868 |
| 9 | Jasper County | 115813 |
| 10 | Franklin County | 101331 |
| 11 | Cass County | 100458 |
| 12 | Platte County | 92203 |
| 13 | Buchanan County | 89962 |
| 14 | Christian County | 79695 |
| 15 | Cape Girardeau County | 77076 |
| 16 | Cole County | 76480 |
| 17 | St. Francois County | 65811 |
| 18 | Newton County | 58651 |
| 19 | Johnson County | 54335 |
| 20 | Pulaski County | 53521 |
| 21 | Lincoln County | 53267 |
| 22 | Taney County | 52928 |
| 23 | Phelps County | 45248 |
| 24 | Callaway County | 44413 |
| 25 | Camden County | 44232 |
| 26 | Butler County | 43001 |
| 27 | Pettis County | 42299 |
| 28 | Howell County | 40533 |
| 29 | Scott County | 39177 |
| 30 | Lawrence County | 38384 |
| 31 | Webster County | 36451 |
| 32 | Laclede County | 35490 |
| 33 | Barry County | 35334 |
| 34 | Lafayette County | 33061 |
| 35 | Warren County | 32746 |
| 36 | Stone County | 31908 |
| 37 | Dunklin County | 31848 |
| 38 | Polk County | 31088 |
| 39 | Stoddard County | 29816 |
| 40 | Marion County | 28753 |
| 41 | Texas County | 25799 |
| 42 | Adair County | 25696 |
| 43 | Audrain County | 25539 |
| 44 | Randolph County | 25337 |
| 45 | Washington County | 25088 |
| 46 | Crawford County | 24783 |
| 47 | Miller County | 24573 |
| 48 | Saline County | 23547 |
| 49 | Nodaway County | 23336 |
| 50 | Ray County | 23081 |
| 51 | McDonald County | 22976 |
| 52 | Henry County | 22228 |
| 53 | Vernon County | 20937 |
| 54 | Clinton County | 20560 |
| 55 | Morgan County | 20079 |
| 56 | Benton County | 19006 |
| 57 | Perry County | 18991 |
| 58 | Wright County | 18557 |
| 59 | Pike County | 18554 |
| 60 | New Madrid County | 18468 |
| 61 | Pemiscot County | 18081 |
| 62 | Ste. Genevieve County | 17867 |
| 63 | Cooper County | 17538 |
| 64 | Andrew County | 17311 |
| 65 | Dallas County | 16703 |
| 66 | Bates County | 16615 |
| 67 | Moniteau County | 15674 |
| 68 | Dent County | 15659 |
| 69 | Macon County | 15550 |
| 70 | Livingston County | 14997 |
| 71 | Gasconade County | 14914 |
| 72 | Mississippi County | 14288 |
| 73 | Ripley County | 14032 |
| 74 | Cedar County | 13910 |
| 75 | Osage County | 13848 |
| 76 | Douglas County | 13582 |
| 77 | Wayne County | 13409 |
| 78 | DeKalb County | 12783 |
| 79 | Linn County | 12489 |
| 80 | Bollinger County | 12447 |
| 81 | Madison County | 12376 |
| 82 | Barton County | 12299 |
| 83 | Montgomery County | 11971 |
| 84 | Oregon County | 10973 |
| 85 | Iron County | 10544 |
| 86 | Grundy County | 10333 |
| 87 | Ralls County | 10230 |
| 88 | Howard County | 10198 |
| 89 | Lewis County | 10116 |
| 90 | Ozark County | 9600 |
| 91 | St. Clair County | 9533 |
| 92 | Hickory County | 9444 |
| 93 | Caldwell County | 9085 |
| 94 | Carroll County | 9076 |
| 95 | Maries County | 9020 |
| 96 | Harrison County | 8731 |
| 97 | Monroe County | 8691 |
| 98 | Shannon County | 8333 |
| 99 | Daviess County | 8294 |
| 100 | Chariton County | 7680 |
| 101 | Dade County | 7556 |
| 102 | Clark County | 6968 |
| 103 | Gentry County | 6767 |
| 104 | Sullivan County | 6557 |
| 105 | Reynolds County | 6549 |
| 106 | Carter County | 6271 |
| 107 | Shelby County | 6213 |
| 108 | Atchison County | 5512 |
| 109 | Putnam County | 4948 |
| 110 | Scotland County | 4872 |
| 111 | Holt County | 4679 |
| 112 | Schuyler County | 4391 |
| 113 | Knox County | 4091 |
| 114 | Mercer County | 3708 |
| 115 | Worth County | 2080 |
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