925 Area Code — Concord, California

Area code 925 serves Concord, CA.

Most looked-up 925 numbers

• 925-839-5655
• 925-334-8747
• 925-374-9403
• 925-463-0280
• 925-435-4855
• 925-332-1724
• 925-476-3247

Phone prefixes in 925

• 925-334
• 925-374
• 925-839
• 925-476
• 925-332
• 925-463
• 925-435

Carriers serving 925

• Onvoy, LLC - CA (3 numbers)
• T-Mobile (1 numbers)
• Peerless Network Of California (1 numbers)
• At&t Corp. (1 numbers)
• Metro By T-Mobile (1 numbers)

Frequently asked questions

Where is area code 925?

Area code 925 serves Concord, CA.

What prefixes are in area code 925?

Phone2.io tracks 7 phone prefixes in area code 925, with carrier and spam-report data on individual numbers.

More about area code 925

Area code 925 overview, history, and local numbers · Get a CA phone number

Last updated: March 24, 2026