ZIP Code 81138 – Jaroso, CO
Jaroso, Colorado · Costilla County · Mountain time
| ZIP code | 81138 |
|---|---|
| City | Jaroso |
| State | Colorado |
| County | Costilla County |
| Population | 17 |
| Time zone | Mountain · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 20.1 sq mi |
| Center (lat, long) | 37.0230, -105.6274 |
Area codes in this area
These are the area codes that most often serve ZIP 81138 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 81138
ZIP code 81138 is assigned to Jaroso, Colorado. It lies in Costilla County. Its Census area covers about 20.1 square miles of land. The closest neighboring ZIP is 87524 (Costilla), about 6.2 miles away.
Every address in 81138 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources