In which county is ZIP code 81138 located?

ZIP 81138 is listed under Costilla, CO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 81138: Jaroso, CO

ZIP: 81138

County: Costilla

Coordinates: 37.00280, -105.62420

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Explore detailed information for ZIP code 81138 in Jaroso, CO. We include verified county details for Costilla plus key geographic references used for mapping and logistics.

Primary City	Jaroso
ZIP Code	81138
County	Costilla
State	CO
Latitude / Longitude	37.00280, -105.62420
ZIP Type	Standard
Time Zone	Mountain Time (MT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 81138 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 81138 are listed as 37.00280 / -105.62420, useful for GPS and service checks in and around Jaroso, CO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 81138 for mail delivery and general location reference in Costilla, CO.

This ZIP may extend beyond the city core into nearby communities within Costilla.

Related ZIP Codes (Nearby)

Explore other postal codes near Jaroso within CO.

Frequently Asked Questions

What is the primary city for ZIP code 81138?

The primary city for this ZIP code is Jaroso, located in CO.

In which county is 81138 located?

ZIP code 81138 is situated within Costilla, CO.

What are the coordinates for 81138?

The approximate center point is 37.00280 (Latitude) and -105.62420 (Longitude).

Is ZIP code 81138 active?

This page lists ZIP 81138 as Listed based on the latest refresh date shown above.

Does ZIP 81138 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08