Get a local business phone number in Riverside, CA

What area code is Riverside, CA?

With 323,757 residents in the Census 2024 estimate, Riverside sits in Riverside County, California. NANPA lists 155 exchanges for its rate center across 2 area codes; 951 has the most (148, 95%). Riverside is in the Pacific time zone.

According to NANPA's dialing-plan data, local calls within 951 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.

Who holds Riverside phone exchanges

21 carriers hold the 155 exchanges assigned to Riverside's rate center. Pacific Bell has the most, with 29. 86 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Riverside can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Riverside

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Riverside's rate center (RIVERSIDE). The earliest assignment date recorded in the file for these codes is 2001. 17 of the 155 were assigned in 2020 or later.

When Riverside's exchanges were assigned

Assignment dates show when each block of Riverside numbers was added to the local supply.

Rate centers and local calling in Riverside

NANPA ties every exchange to a rate center. For Riverside that is RIVERSIDE, so a number from one of these exchanges reads as local to people in and around Riverside.

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

Who does business near Riverside

Riverside is part of the Riverside-San Bernardino-Ontario, CA metro area, home to 4.7 million people in 2024. County Business Patterns counted 88,815 business establishments in the Riverside, CA metro area in 2023, employing 1,406,138 people. The largest sectors by establishment count are health care and social assistance (11,275), retail trade (10,992), and construction (9,892).

Setting up a Riverside business line

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

If you already have a number in Riverside, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

A 16-person team is the benchmark here, the rounded average establishment size in the Riverside, CA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $480.00 a month and Ooma Office Pro $399.20. On Callata the same 16 people cost $319.00 a month, less than either per-seat plan.