In which county is ZIP code 83121 located?

ZIP 83121 is listed under Lincoln, WY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 83121: Frontier, WY

ZIP: 83121

County: Lincoln

Coordinates: 41.81410, -110.53710

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Explore detailed information for ZIP code 83121 in Frontier, WY. We include verified county details for Lincoln plus key geographic references used for mapping and logistics.

Primary City	Frontier
ZIP Code	83121
County	Lincoln
State	WY
Latitude / Longitude	41.81410, -110.53710
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 83121 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 83121 is approximately 41.81410 (latitude) and -110.53710 (longitude). This location sits within Lincoln, contributing to regional planning across WY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 83121 for mail delivery and general location reference in Lincoln, WY.

Some addresses near Frontier may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Frontier within WY.

Frequently Asked Questions

What is the primary city for ZIP code 83121?

The primary city for this ZIP code is Frontier, located in WY.

In which county is 83121 located?

ZIP code 83121 is situated within Lincoln, WY.

What are the coordinates for 83121?

The approximate center point is 41.81410 (Latitude) and -110.53710 (Longitude).

Is ZIP code 83121 active?

This page lists ZIP 83121 as Listed based on the latest refresh date shown above.

Does ZIP 83121 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