100 Smallest ZIP Codes in the United States by Population in Trego County, Kansas
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 Trego County, Kansas.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 67631 | COLLYER | KS | 115 |
| 2 | 67656 | OGALLAH | KS | 221 |
| 3 | 67672 | WAKEENEY | KS | 2,199 |