Question 1

What is the area code for San Luis Obispo?

Accepted Answer

The main area code for San Luis Obispo, California is 805. San Luis Obispo is now served by 2 area codes in total: 805, 820.

Question 2

How many area codes does San Luis Obispo have?

Accepted Answer

San Luis Obispo has 2 area codes: 805, 820.

Question 3

Why does San Luis Obispo have more than one area code?

Accepted Answer

As San Luis Obispo used up the numbers available in its original area code (805, in service since 1957), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a San Luis Obispo number?

Accepted Answer

Dial all 10 digits — the area code (805 or 820) followed by the 7-digit local number. From outside the U.S., dial +1, then the area code and number.

Area codes in San Luis Obispo, California

Area codes serving San Luis Obispo