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US area code · California

707 area code

Where the 707 area code is, its overlay and how to dial a +1 707 number from anywhere.

CoversBenicia, CaliforniaTime zonePacific (PT)TypeOverlay
Quick answer

The 707 area code is in Benicia, California, United States (Pacific (PT)). To call from abroad: +1 707 555-0123. It is an overlay, so all 10 digits are dialled.

StateCalifornia
Main areaBenicia
Time zonePacific (PT)
TypeOverlay
10-digit dialingRequired
In service since01-Jan-1959

The 707 area code is a geographic North American Numbering Plan (NANP) code covering Benicia, California. It has been in service since 01-Jan-1959 and sits in the Pacific (PT) time zone.

Overlay 707 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

707369415

How to dial a 707 number

From abroad+1 707 555-0123
Within the US / Canada1 707 555-0123
Locally (same area)707 555-0123

Cities in the 707 area code

A 707 number is usually in one of these places in California — 4 counties.

Benicia SolanoEureka HumboldtFairfield SolanoNapa NapaPetaluma SonomaRohnert Park SonomaSanta Rosa SonomaSuisunVacaville SolanoVallejo SolanoWindsor Sonoma

Other California area codes

209213279310323341350357369408415424442510530559

Frequently asked questions

Where is the 707 area code?

The 707 area code is in Benicia, California, United States (Pacific (PT)).

Is 707 an overlay area code?

Yes. 707 overlays the same region as 369, 415, so callers dial all 10 digits.

Do I have to dial 10 digits for 707?

Yes — dial the area code plus the seven-digit number.

How do I call a 707 number from another country?

Dial your exit code (or +), then 1, then 707, then the number: +1 707 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 707 number does not pinpoint a street or ZIP code.

Number holders in area code 707

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 800 prefixes are in use in 707, shared by 40 companies. The largest holders:

CompanyPrefixesShare
Pacific Bell22528%
Onvoy, LLC9612%
New Cingular Wireless PCS, LLC678%
Level 3 Communications, LLC587%
Cellco Partnership Dba Verizon Wireless557%
T-Mobile USA, Inc.314%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 707 numbers

Reports to the FTC, last 30 days
1,087
Recorded messages or robocalls
67%
Rank among area codes
#34 of 670
Most reported subjects
Other (379)
Reducing your debt (credit cards, mortgage, student loans) (333)
Dropped call or no message (90)

Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.

Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).

All US area codes United States +1 Map of area code 707 — cities & rate centres

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