Area Code 341

California (CA) • Oakland, Berkeley, Fremont, Hayward, Richmond, San Leandro, Alameda, Castro Valley • Pacific Time (PT)

What Stands Out

•Coverage: 1.7M people across 53 ZIP codes (primarily Alameda County, CA).
•Overlapping area codes: 510.
•Major cities: Oakland, Berkeley, Fremont.

Spotlight: Coverage

Snapshot highlights for area code 341.

Income

92nd

Home values

98th

Poverty rate

49th

Area Code Basics

Primary State

California (CA)

States Served

California (CA)

Major Cities

Oakland, Berkeley, Fremont, Hayward, Richmond, San Leandro, Alameda, Castro Valley

Time Zone(s)

Pacific Time (PT)

Est. Population

1.7M

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.