In which county is ZIP code 81123 located?

ZIP 81123 is listed under Costilla, CO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 81123: Blanca, CO

ZIP: 81123

County: Costilla

Coordinates: 37.43170, -105.51780

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Get a reliable snapshot of the Blanca, CO postal area 81123. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Blanca
ZIP Code	81123
County	Costilla
State	CO
Latitude / Longitude	37.43170, -105.51780
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 81123 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 81123 are listed as 37.43170 / -105.51780, useful for GPS and service checks in and around Blanca, CO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 81123 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 Blanca within CO.

Frequently Asked Questions

What is the primary city for ZIP code 81123?

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

In which county is 81123 located?

ZIP code 81123 is situated within Costilla, CO.

What are the coordinates for 81123?

The approximate center point is 37.43170 (Latitude) and -105.51780 (Longitude).

Is ZIP code 81123 active?

This page lists ZIP 81123 as Listed based on the latest refresh date shown above.

Does ZIP 81123 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