707
Covers northwestern California
In service since 1959
Split from area code 415
Overlay with 369
City facts
Vallejo area codes
Area codes for northwestern California: history, overlays and how to dial.
707369
Vallejo uses area codes 707 and 369. Because more than one area code serves the same area, local calls need all ten digits.
About these area codes
369
Covers northwestern California
In service since 2023
Overlay with 707
How to call a number in Vallejo
Inside the US
1 (707) 555-0123Dial 1, the area code, then the seven-digit number.Local call
(707) 555-0123Overlay area: always include the area code.From outside the US
+1 707 555 0123Use your country's exit code or +, then 1 for the US.Vallejo is on Pacific Time (PT); check the time before calling from another zone.
Other cities that share these codes
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 510 | Richmond | 14 mi |
| 341 | Richmond | 14 mi |
| 925 | Concord | 15 mi |
| 650 | San Mateo | 39 mi |
| 408 | Sunnyvale | 52 mi |
| 669 | Sunnyvale | 52 mi |
| 209 | Stockton | 53 mi |
| 350 | Stockton | 53 mi |
Vallejo quick facts
Vallejo was incorporated on March 30, 1868. It is named for Mariano Guadalupe Vallejo.
Incorporated1868March 30, 1868
CountySolano CountyCalifornia
Area codes707, 369Population124,637Census ACS estimateZIP codes494589, 94590, 94591…Elevation69 ft21 m
Time zonePacific TimePT
Dates, namesake and elevation from Wikipedia: Vallejo, California and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Vallejo?
Vallejo uses area codes 707 and 369. Because more than one area code serves the same area, local calls need all ten digits.
When did area code 707 start?
Area code 707 dates from 1959, when it was split from area code 415.
When did area code 369 start?
Area code 369 dates from 2023.
Do I need to dial the area code for local calls in Vallejo?
Yes. 707 and 369 share the same area as an overlay, so every local call needs the area code plus the seven-digit number (ten digits).
What time zone is area code 707 in?
Vallejo is on Pacific Time (PT).
What other cities use area code 707?
Other cities in this network that share 707 and 369 include Fairfield, Santa Rosa.
Sources: Area codes 707 and 369, Area codes 707 and 369 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.