In which county is ZIP code 81639 located?

ZIP 81639 is listed under Routt, CO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 81639: Hayden, CO

ZIP: 81639

County: Routt

Coordinates: 40.49450, -107.25710

ZIP Type: Standard

Time Zone: Mountain Time (MT)

This profile provides an in-depth look at ZIP code 81639, serving Hayden in CO. It lies in Routt and supports delivery, planning, and address verification.

Primary City	Hayden
ZIP Code	81639
County	Routt
State	CO
Latitude / Longitude	40.49450, -107.25710
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 81639 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 81639 are listed as 40.49450 / -107.25710, useful for GPS and service checks in and around Hayden, CO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 81639 for mail delivery and general location reference in Routt, CO.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Hayden.

Related ZIP Codes (Nearby)

Explore other postal codes near Hayden within CO.

Frequently Asked Questions

What is the primary city for ZIP code 81639?

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

In which county is 81639 located?

ZIP code 81639 is situated within Routt, CO.

What are the coordinates for 81639?

The approximate center point is 40.49450 (Latitude) and -107.25710 (Longitude).

Is ZIP code 81639 active?

This page lists ZIP 81639 as Listed based on the latest refresh date shown above.

Does ZIP 81639 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