In which county is ZIP code 91377 located?

ZIP 91377 is listed under Ventura County, CA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 91377: Oak Park, CA

ZIP: 91377

County: Ventura County

Coordinates: 34.18500, -118.76690

ZIP Type: Standard

Time Zone: Pacific Time (PT)

Get a reliable snapshot of the Oak Park, CA postal area 91377. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Oak Park
ZIP Code	91377
County	Ventura County
State	CA
Latitude / Longitude	34.18500, -118.76690
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 91377 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 91377 is commonly represented around 34.18500, -118.76690. These coordinates help identify the general area within Ventura County, CA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91377 for mail delivery and general location reference in Ventura County, CA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Oak Park within CA.

Frequently Asked Questions

What is the primary city for ZIP code 91377?

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

In which county is 91377 located?

ZIP code 91377 is situated within Ventura County, CA.

What are the coordinates for 91377?

The approximate center point is 34.18500 (Latitude) and -118.76690 (Longitude).

Is ZIP code 91377 active?

This page lists ZIP 91377 as Listed based on the latest refresh date shown above.

Does ZIP 91377 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