Area code
707
707 is a United States area code. Under the North American Numbering Plan it belongs to California, which has 41 area codes in total.
Validate a number in 707
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Area code 707 at a glance
NANPA lists 784 central office codes (prefixes) in use in area code 707, held by 35 holders across 75 rate centers.
| Fact | Value |
|---|---|
| In service since | 1959-01-01 |
| Time zone | Pacific (P) |
| Assigned overlays | 369 (2023-02-01) |
| Prefixes in use | 784 |
| Pooled prefixes | 616 (79%) |
| Rate centers | 75 |
| Companies holding prefixes | 35 |
| Assignment dates on file | 2001-01-25 to 2024-02-20 (200 prefixes) |
| ZIP codes in its places | 75 |
Rate centers in area code 707
| Rate center | Prefixes | Share |
|---|---|---|
| SANTA ROSA | 144 | 18% |
| FRFLD-SUIS | 56 | 7% |
| VALLEJO | 50 | 6% |
| NAPA | 43 | 5% |
| VACAVILLE | 37 | 5% |
| EUREKA | 35 | 4% |
| PTLM MAIN | 29 | 4% |
| UKIAH | 22 | 3% |
| 67 other rate centers | 368 | 47% |
Who holds the prefixes in 707
Pacific Bell holds the most prefixes, 224 (29%). 79% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Pacific Bell | 224 | 29% |
| Onvoy | 95 | 12% |
| New Cingular Wireless PCS | 67 | 9% |
| Level 3 Communications | 58 | 7% |
| Verizon Wireless | 55 | 7% |
| T-Mobile USA | 31 | 4% |
| 29 other carriers | 254 | 32% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 707
- 1947-01-01 Area code 415, named as the parent of 707 in the NANPA report, was in service.
- 1959-01-01 Area code 707 went into service.
- 2023-02-01 Area code 369 went into service as an overlay in the same area as 707.
Area codes nearest to 707
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
Overlay codes in the same area
ZIP codes in area code 707
75 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Santa Rosa, CA | 8 |
| Vallejo, CA | 4 |
| Eureka, CA | 3 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 707 numbers
3,529 FCC complaints are on file for 2,726 numbers in 707, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 164 |
| 2024 | 156 |
| 2025 | 143 |
Other area codes in California
California is one state with 41 area codes in the NANPA table. 707 is one of them.
- 209
- 213
- 279
- 310
- 323
- 341
- 350
- 357
- 369
- 408
- 415
- 424
- 442
- 510
- 530
- 559
- 562
- 619
- 626
- 628
- 650
- 657
- 661
- 669
- 714
- 738
- 747
- 760
- 805
- 818
- 820
- 831
- 837
- 840
- 858
- 909
- 916
- 925
- 949
- 951
Next to 707 in the numbering table
These are the codes just before and after 707 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 707 was first assigned in California. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in California next to a 707 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 707
Where is area code 707?
NANPA assigns area code 707 to California, United States.
In which state does area code 707 sit?
California. 707 is one of 41 area codes the NANPA table assigns to the state.
Which places does area code 707 cover?
The places with the most ZIP codes among the rate centers in 707 are Santa Rosa, CA, Vallejo, CA and Eureka, CA. The rate center list on this page shows all of them.
Who owns area code 707?
NANPA assigns area codes. Within 707, Pacific Bell holds the most prefixes, 224 prefixes or 29%.
Which time zone does 707 use?
The NANPA NPA report lists the time zone for 707 as Pacific (P).
What year did 707 enter service?
The NANPA NPA report gives an in-service date of 1959-01-01, so 707 has been in use since 1959.
Does area code 707 have an overlay?
Yes. 369 (in service 2023-02-01) shares the same area with 707, so numbers from all of them are local to each other.
Which area codes are nearest to 707?
The area codes closest to 707, measured between the centers of the ZIP code places they serve, are 916 (about 87 miles), 415 (about 88 miles), 628 (about 88 miles), 530 (about 91 miles) and 279 (about 106 miles).
How many prefixes does area code 707 have?
NANPA's report dated 2026-10-17 lists 784 prefixes in service in 707, spread over 75 rate centers and 35 holders.
Are there complaints about 707 numbers?
The FCC data on file has 3,529 complaints for 2,726 numbers in 707. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.