In which county is ZIP code 80305 located?

ZIP 80305 is listed under Boulder, CO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 80305: Boulder, CO

ZIP: 80305

County: Boulder

Coordinates: 39.98070, -105.25310

ZIP Type: Standard

Time Zone: Mountain Time (MT)

This profile provides an in-depth look at ZIP code 80305, serving Boulder in CO. It lies in Boulder and supports delivery, planning, and address verification.

Primary City	Boulder
ZIP Code	80305
County	Boulder
State	CO
Latitude / Longitude	39.98070, -105.25310
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 80305 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 80305 are listed as 39.98070 / -105.25310, useful for GPS and service checks in and around Boulder, CO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 80305 for mail delivery and general location reference in Boulder, CO.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Boulder within CO.

Frequently Asked Questions

What is the primary city for ZIP code 80305?

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

In which county is 80305 located?

ZIP code 80305 is situated within Boulder, CO.

What are the coordinates for 80305?

The approximate center point is 39.98070 (Latitude) and -105.25310 (Longitude).

Is ZIP code 80305 active?

This page lists ZIP 80305 as Listed based on the latest refresh date shown above.

Does ZIP 80305 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