Most populated ZIP codes in Missouri
The ZIP codes in Missouri with the most residents.
| Rank | ZIP code | City | County | Population | Population |
|---|
| 1 | 63376 | Saint Peters, MO | St. Charles County | 74,962 | 74,962 |
| 2 | 65203 | Columbia, MO | Boone County | 61,539 | 61,539 |
| 3 | 65807 | Springfield, MO | Greene County | 56,659 | 56,659 |
| 4 | 63021 | Ballwin, MO | St. Louis County | 55,666 | 55,666 |
| 5 | 63366 | O Fallon, MO | St. Charles County | 54,769 | 54,769 |
| 6 | 63301 | Saint Charles, MO | St. Charles County | 52,667 | 52,667 |
| 7 | 63129 | Saint Louis, MO | St. Louis County | 51,553 | 51,553 |
| 8 | 63385 | Wentzville, MO | St. Charles County | 51,330 | 51,330 |
| 9 | 63031 | Florissant, MO | St. Louis County | 50,196 | 50,196 |
| 10 | 65201 | Columbia, MO | Boone County | 50,011 | 50,011 |
| 11 | 63123 | Saint Louis, MO | St. Louis County | 49,077 | 49,077 |
| 12 | 65202 | Columbia, MO | Boone County | 47,327 | 47,327 |
| 13 | 63368 | O Fallon, MO | St. Charles County | 46,966 | 46,966 |
| 14 | 65802 | Springfield, MO | Greene County | 46,739 | 46,739 |
| 15 | 63303 | Saint Charles, MO | St. Charles County | 46,089 | 46,089 |
| 16 | 63026 | Fenton, MO | Jefferson County | 45,354 | 45,354 |
| 17 | 63017 | Chesterfield, MO | St. Louis County | 43,243 | 43,243 |
| 18 | 63304 | Saint Charles, MO | St. Charles County | 43,195 | 43,195 |
| 19 | 63033 | Florissant, MO | St. Louis County | 43,056 | 43,056 |
| 20 | 65803 | Springfield, MO | Greene County | 42,882 | 42,882 |
| 21 | 63116 | Saint Louis, MO | St. Louis city | 42,170 | 42,170 |
| 22 | 64118 | Kansas City, MO | Clay County | 41,984 | 41,984 |
| 23 | 63122 | Saint Louis, MO | St. Louis County | 41,634 | 41,634 |
| 24 | 65109 | Jefferson City, MO | Cole County | 41,145 | 41,145 |
| 25 | 65804 | Springfield, MO | Greene County | 40,935 | 40,935 |
| 26 | 63136 | Saint Louis, MO | St. Louis County | 40,929 | 40,929 |
| 27 | 63701 | Cape Girardeau, MO | Cape Girardeau County | 39,345 | 39,345 |
| 28 | 64068 | Liberty, MO | Clay County | 37,758 | 37,758 |
| 29 | 64804 | Joplin, MO | Newton County | 37,016 | 37,016 |
| 30 | 65714 | Nixa, MO | Christian County | 37,013 | 37,013 |
| 31 | 64801 | Joplin, MO | Jasper County | 36,287 | 36,287 |
| 32 | 64133 | Kansas City, MO | Jackson County | 36,249 | 36,249 |
| 33 | 64055 | Independence, MO | Jackson County | 35,960 | 35,960 |
| 34 | 63011 | Ballwin, MO | St. Louis County | 35,920 | 35,920 |
| 35 | 63901 | Poplar Bluff, MO | Butler County | 35,324 | 35,324 |
| 36 | 65301 | Sedalia, MO | Pettis County | 35,091 | 35,091 |
| 37 | 63010 | Arnold, MO | Jefferson County | 34,478 | 34,478 |
| 38 | 63119 | Saint Louis, MO | St. Louis County | 34,181 | 34,181 |
| 39 | 63114 | Saint Louis, MO | St. Louis County | 33,969 | 33,969 |
| 40 | 65721 | Ozark, MO | Christian County | 33,452 | 33,452 |
| 41 | 63125 | Saint Louis, MO | St. Louis County | 33,294 | 33,294 |
| 42 | 64119 | Kansas City, MO | Clay County | 33,199 | 33,199 |
| 43 | 65401 | Rolla, MO | Phelps County | 32,714 | 32,714 |
| 44 | 64015 | Blue Springs, MO | Jackson County | 32,245 | 32,245 |
| 45 | 64152 | Kansas City, MO | Platte County | 31,545 | 31,545 |
| 46 | 63146 | Saint Louis, MO | St. Louis County | 30,678 | 30,678 |
| 47 | 63128 | Saint Louis, MO | St. Louis County | 30,540 | 30,540 |
| 48 | 65536 | Lebanon, MO | Laclede County | 29,915 | 29,915 |
| 49 | 63367 | Lake Saint Louis, MO | St. Charles County | 29,725 | 29,725 |
| 50 | 64012 | Belton, MO | Cass County | 29,304 | 29,304 |
Source: American Community Survey 2020–2024 5-year estimates. Only ZIP codes with a delivery area are ranked. Methodology
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