Summary

Area code 925 is associated with Antioch, Bay Point, Brentwood, Concord, Danville, Dublin, Lafayette, Livermore, Martinez, Oakley, Pittsburg, Pleasant Hill, Pleasanton, San Ramon and Walnut Creek, California, United States.

Area Code
925
Area Code 925
Country United States
Country Code US
State / Province California
Associated Cities 15
Coordinates 37.89178, -121.93505

About Area Code 925

Area code 925 is a North American telephone area code associated with Antioch, Bay Point, Brentwood, Concord, Danville, Dublin, Lafayette, Livermore, Martinez, Oakley, Pittsburg, Pleasant Hill, Pleasanton, San Ramon and Walnut Creek in California, United States. It is part of the North American Numbering Plan, which assigns three-digit codes to geographic areas across the United States, Canada and neighbouring territories.

The dataset lists 15 associated cities for area code 925, each with its own latitude and longitude. These city associations reflect the communities served by the numbering area when the data was compiled.

Area code 925 falls within California. Area codes are assigned geographically, but because of number portability a phone number does not always stay in the region it was originally issued for.

The approximate centre of this numbering area is located at latitude 37.89178 and longitude -121.93505, placing it within California. Coordinates are averaged from the associated city data and should be treated as a general reference point.

Area code 925 is one of hundreds of codes in the North American Numbering Plan. Codes are opened, split and overlaid by numbering administrators as demand changes, so city and region associations can shift over time.

Because of number portability, the current location of a phone number may differ from the area shown here. This page describes the area code assignment, not the physical location of an individual subscriber in United States.

Cities in Area Code 925

City State / Province Region Code Latitude Longitude
Antioch California CA 38.0049200 -121.8057900
Bay Point California CA 38.0290900 -121.9616300
Brentwood California CA 37.9318700 -121.6957900
Concord California CA 37.9779800 -122.0310700
Danville California CA 37.8215900 -121.9999600
Dublin California CA 37.7021500 -121.9357900
Lafayette California CA 37.8857600 -122.1180200
Livermore California CA 37.6818700 -121.7680100
Martinez California CA 38.0193700 -122.1341300
Oakley California CA 37.9974200 -121.7124500
Pittsburg California CA 38.0279800 -121.8846800
Pleasant Hill California CA 37.9479800 -122.0608000
Pleasanton California CA 37.6624300 -121.8746800
San Ramon California CA 37.7799300 -121.9780200
Walnut Creek California CA 37.9063100 -122.0649600

Data Source

Area-code data is imported from Area Code Geolocation Database, a North American area-code geolocation database. GitHub.

This is a snapshot of an external open dataset, not a live telecom feed. Area-code boundaries and city associations may change over time, and number portability means an individual number may not be located where its area code suggests. Always confirm details with the relevant carrier or authority before relying on them.

Portability note: numbers can be moved between providers and regions, so an area code does not guarantee the caller's actual location.

Frequently Asked Questions

Where is area code 925 located?

Area code 925 is located in United States, within California.

Which cities use area code 925?

Area code 925 is associated with Antioch, Bay Point, Brentwood, Concord, Danville, Dublin, Lafayette, Livermore, Martinez, Oakley, Pittsburg, Pleasant Hill, Pleasanton, San Ramon and Walnut Creek.

Is an area code tied to a physical location?

No. Area codes are assigned geographically, but number portability means a phone number can move between regions and keep its original area code. The association shown here describes the area-code assignment, not a caller's current location.

Information provided on CodeReff is for reference purposes only. Always verify financial and banking details with the relevant institution before use.