Get a local business phone number in Windsor, CA

Windsor area codes

Windsor, in Sonoma County, California, had a Census-estimated population of 25,846 in July 2024. NANPA lists 11 exchanges for its rate center across 2 area codes; 707 has the most (10, 91%). 707 is part of an overlay with 369, so a new local number in Windsor may carry any of those codes depending on which have numbers available. Windsor is in the Pacific time zone.

According to NANPA's dialing-plan data, local calls within 707 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.

Who holds Windsor phone exchanges

7 carriers hold the 11 exchanges assigned to Windsor's rate center. Cellco Partnership d/b/a Verizon Wireless - CA has the most, with 3. 10 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Windsor phone prefixes

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Windsor. The earliest assignment date recorded in the file for these codes is 2001. 2 of the 11 were assigned in 2020 or later.

When Windsor's exchanges were assigned

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

What makes a number local to Windsor

What a caller sees as "local" is the area code plus prefix. In Windsor, those come from the WINDSOR rate center, as recorded by NANPA.

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

Businesses around Windsor

Windsor is part of the Santa Rosa-Petaluma, CA metro area, home to 485,000 people in 2024. County Business Patterns counted 14,572 business establishments in the Santa Rosa, CA metro area in 2023, employing 177,367 people. The largest sectors by establishment count are construction (2,253), health care and social assistance (1,671), and professional, scientific, and technical services (1,653).

Setting up a Windsor 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.

Porting a number you already use in Windsor 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.

The comparison below uses 12 users, the rounded average establishment size in the Santa Rosa, CA metro area. At list prices checked September 28, 2026, that is $299.40 a month on Ooma Office Pro and $360.00 on RingCentral RingEX Core. Callata comes to $239.00 a month for 12 users ($99 a month with 5 users included, then $20 per additional user), below both.