Question 1

What is the area code for Vallejo?

Accepted Answer

The main area code for Vallejo, California is 707. Vallejo is now served by 2 area codes in total: 707, 369.

Question 2

How many area codes does Vallejo have?

Accepted Answer

Vallejo has 2 area codes: 707, 369.

Question 3

Why does Vallejo have more than one area code?

Accepted Answer

As Vallejo used up the numbers available in its original area code (707, in service since 1959), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a Vallejo number?

Accepted Answer

Dial all 10 digits — the area code (707 or 369) followed by the 7-digit local number. From outside the U.S., dial +1, then the area code and number.

Area codes in Vallejo, California

Area codes serving Vallejo