ZIP code ranking · MO
Most Populous ZIP Codes in MO
The top 25 ZIP codes ranked by population in MO. The ranking pulls from the latest available data; ZIPs with implausible or incomplete data are excluded.
| Rank | ZIP | Where | Population |
|---|---|---|---|
| 1 | 63376 | St. Peters, MO· St. Charles County | 74,962 |
| 2 | 65203 | Columbia, MO· Boone County | 61,539 |
| 3 | 65807 | Springfield, MO· Greene County | 56,659 |
| 4 | 63021 | Ballwin, MO· St. Louis County | 55,666 |
| 5 | 63366 | O'Fallon, MO· St. Charles County | 54,769 |
| 6 | 63301 | St. Charles, MO· St. Charles County | 52,667 |
| 7 | 63129 | Oakville CDP, MO· St. Louis County | 51,553 |
| 8 | 63385 | Wentzville, MO· St. Charles County | 51,330 |
| 9 | 63031 | Florissant, MO· St. Louis County | 50,196 |
| 10 | 65201 | Columbia, MO· Boone County | 50,011 |
| 11 | 63123 | Affton CDP, MO· St. Louis County | 49,077 |
| 12 | 65202 | Columbia, MO· Boone County | 47,327 |
| 13 | 63368 | O'Fallon, MO· St. Charles County | 46,966 |
| 14 | 65802 | Springfield, MO· Greene County | 46,739 |
| 15 | 63303 | St. Charles, MO· St. Charles County | 46,089 |
| 16 | 63026 | Fenton, MO· Jefferson County | 45,354 |
| 17 | 63017 | Chesterfield, MO· St. Louis County | 43,243 |
| 18 | 63304 | Weldon Spring, MO· St. Charles County | 43,195 |
| 19 | 63033 | Florissant, MO· St. Louis County | 43,056 |
| 20 | 65803 | Springfield, MO· Greene County | 42,882 |
| 21 | 63116 | St. Louis, MO· St. Louis city | 42,170 |
| 22 | 64118 | Kansas City, MO· Clay County | 41,984 |
| 23 | 63122 | Kirkwood, MO· St. Louis County | 41,634 |
| 24 | 65109 | Jefferson City, MO· Cole County | 41,145 |
| 25 | 65804 | Springfield, MO· Greene County | 40,935 |