Area Code 925

California (CA) • Concord, Walnut Creek, Antioch, Danville, Livermore, Moraga, Pleasanton, San Ramon • Pacific Time (PT)

What Stands Out

•Coverage: 1.1M people across 38 ZIP codes (primarily Contra Costa County, CA).
•Major cities: Concord, Walnut Creek, Antioch.

Spotlight: Coverage

Snapshot highlights for area code 925.

Income

97th

Home values

98th

Poverty rate

32nd

Area Code Basics

Primary State

California (CA)

States Served

California (CA)

Major Cities

Concord, Walnut Creek, Antioch, Danville, Livermore, Moraga, Pleasanton, San Ramon

Time Zone(s)

Pacific Time (PT)

Est. Population

1.1M

ZIP Codes

Data accuracy & methodology

This report aggregates 2020–2024 ACS 5-year estimates and geographic overlays for orientation. Area-code service areas can cross ZIP/state boundaries and change over time; verify official assignments with NANPA for critical use.