In which county is ZIP code 81221 located?

ZIP 81221 is listed under Fremont, CO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 81221: Coal Creek, CO

ZIP: 81221

County: Fremont

Coordinates: 38.36110, -105.14830

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Explore detailed information for ZIP code 81221 in Coal Creek, CO. We include verified county details for Fremont plus key geographic references used for mapping and logistics.

Primary City	Coal Creek
ZIP Code	81221
County	Fremont
State	CO
Latitude / Longitude	38.36110, -105.14830
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 81221 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 81221 are listed as 38.36110 / -105.14830, useful for GPS and service checks in and around Coal Creek, CO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 81221 for mail delivery and general location reference in Fremont, CO.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Coal Creek within CO.

Frequently Asked Questions

What is the primary city for ZIP code 81221?

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

In which county is 81221 located?

ZIP code 81221 is situated within Fremont, CO.

What are the coordinates for 81221?

The approximate center point is 38.36110 (Latitude) and -105.14830 (Longitude).

Is ZIP code 81221 active?

This page lists ZIP 81221 as Listed based on the latest refresh date shown above.

Does ZIP 81221 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