Get a local business phone number in St. Helena, CA

St. Helena area codes

St. Helena, in Napa County, California, had a Census-estimated population of 5,257 in July 2024. All 12 exchanges NANPA lists for its rate center are in area code 707. 707 is part of an overlay with 369, so a new local number in St. Helena may carry any of those codes depending on which have numbers available. St. Helena 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.

Phone carriers in St. Helena

7 carriers hold the 12 exchanges assigned to St. Helena's rate center. Pacific Bell has the most, with 4. 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.

Exchanges (NPA-NXX) assigned in St. Helena

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to St. Helena's rate center (ST HELENA). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 12 were assigned in 2020 or later.

When St. Helena's exchanges were assigned

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

What makes a number local to St. Helena

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

New local numbers are drawn from carrier inventory, so the exact 707 numbers available change over time; porting an existing number is free.

Businesses around St. Helena

St. Helena is part of the Napa, CA metro area, home to 133,000 people in 2024. County Business Patterns counted 4,486 business establishments in the Napa, CA metro area in 2023, employing 66,372 people. The largest sectors by establishment count are manufacturing (525), construction (504), and retail trade (483).

Business phone service in St. Helena

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 St. Helena, 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 15-person team is the benchmark here, the rounded average establishment size in the Napa, CA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $450.00 a month and Ooma Office Pro $374.25. On Callata the same 15 people cost $299.00 a month, less than either per-seat plan.