Buffalo County, South Dakota ZIP Codes

ZIP records
2
Cities represented
2
Sum of listed ZIP population estimates
1,469

Population sum includes positive estimates in these ZIP records; it is not an official county population.

Top ZIP Codes by Population

Rank	ZIP Code	City	Population estimate
1	57339	Fort Thompson	1,390
2	57341	Gann Valley	79

Cities in Buffalo County

Fort Thompson
Gann Valley

ZIP Directory

ZIP 57339
ZIP 57341

Browse all ZIP data for South Dakota

Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.