In which county is ZIP code 94551 located?

ZIP 94551 is listed under Alameda County, CA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 94551: Livermore, CA

ZIP: 94551

County: Alameda County

Coordinates: 37.75260, -121.77000

ZIP Type: Standard

Time Zone: Pacific Time (PT)

Get a reliable snapshot of the Livermore, CA postal area 94551. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Livermore
ZIP Code	94551
County	Alameda County
State	CA
Latitude / Longitude	37.75260, -121.77000
ZIP Type	Standard
Time Zone	Pacific Time (PT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 94551 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 94551 is commonly represented around 37.75260, -121.77000. These coordinates help identify the general area within Alameda County, CA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 94551 for mail delivery and general location reference in Alameda County, CA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Livermore within CA.

Frequently Asked Questions

What is the primary city for ZIP code 94551?

The primary city for this ZIP code is Livermore, located in CA.

In which county is 94551 located?

ZIP code 94551 is situated within Alameda County, CA.

What are the coordinates for 94551?

The approximate center point is 37.75260 (Latitude) and -121.77000 (Longitude).

Is ZIP code 94551 active?

This page lists ZIP 94551 as Listed based on the latest refresh date shown above.

Does ZIP 94551 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