100 Largest ZIP Codes in the United States by Population in Buffalo County, South Dakota
Explore the 100 largest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Buffalo County, South Dakota.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 57339 | FORT THOMPSON | SD | 1,341 |
| 2 | 57341 | GANN VALLEY | SD | 146 |