100 Smallest ZIP Codes in the United States by Population in St. Clair County, Missouri
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in St. Clair County, Missouri.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 64781 | ROSCOE | MO | 110 |
| 2 | 64738 | COLLINS | MO | 1,337 |
| 3 | 64763 | LOWRY CITY | MO | 1,462 |
| 4 | 64724 | APPLETON CITY | MO | 2,090 |
| 5 | 64776 | OSCEOLA | MO | 3,521 |