100 Smallest ZIP Codes in the United States by Population in Costilla County, Colorado
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 Costilla County, Colorado.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 81138 | JAROSO | CO | 39 |
| 2 | 81126 | CHAMA | CO | 371 |
| 3 | 81123 | BLANCA | CO | 729 |
| 4 | 81133 | FORT GARLAND | CO | 1,109 |
| 5 | 81152 | SAN LUIS | CO | 1,187 |