Question 1

What is the area code for Oakland?

Accepted Answer

The main area code for Oakland, California is 510. Oakland is now served by 2 area codes in total: 510, 341.

Question 2

How many area codes does Oakland have?

Accepted Answer

Oakland has 2 area codes: 510, 341.

Question 3

Why does Oakland have more than one area code?

Accepted Answer

As Oakland used up the numbers available in its original area code (510, in service since 1991), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a Oakland number?

Accepted Answer

Dial all 10 digits — the area code (510 or 341) followed by the 7-digit local number. From outside the U.S., dial +1, then the area code and number.

Area codes in Oakland, California

Area codes serving Oakland