Get a local business phone number in Richmond, CA

What area code is Richmond, CA?

Richmond, in Contra Costa County, California, had a Census-estimated population of 115,353 in July 2024. NANPA lists 63 exchanges for its rate center across 2 area codes; 510 has the most (53, 84%). 510 is part of an overlay with 341, so a new local number in Richmond may carry any of those codes depending on which have numbers available. Richmond is in the Pacific time zone.

According to NANPA's dialing-plan data, local calls within 510 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.

Who holds Richmond phone exchanges

16 carriers hold the 63 exchanges assigned to Richmond's rate center. Pacific Bell has the most, with 15. 46 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Richmond can come from any of these blocks; once it is yours, porting lets it move between providers.

Richmond phone prefixes

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Richmond. The earliest assignment date recorded in the file for these codes is 2001. 11 of the 63 were assigned in 2020 or later.

When Richmond's exchanges were assigned

The table groups Richmond's exchanges by the decade NANPA recorded them as assigned.

How local numbers work in Richmond

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Richmond's numbers are rated to the RICHMOND rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Richmond number.

If your business already has a Richmond number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Who does business near Richmond

Richmond is part of the San Francisco-Oakland-Fremont, CA metro area, home to 4.6 million people in 2024. County Business Patterns counted 133,246 business establishments in the San Francisco, CA metro area in 2023, employing 2,417,363 people. The largest sectors by establishment count are professional, scientific, and technical services (23,140), health care and social assistance (16,920), and accommodation and food services (13,736).

A Richmond number on Callata

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in Richmond is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in the San Francisco, CA metro area, 18 users on RingCentral RingEX Core come to $540.00 a month and on Ooma Office Pro $449.10, at month-to-month list prices checked September 28, 2026. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.