Question 1

What is the area code for Thousand Oaks?

Accepted Answer

The main area code for Thousand Oaks, California is 805. Thousand Oaks is now served by 2 area codes in total: 805, 820.

Question 2

How many area codes does Thousand Oaks have?

Accepted Answer

Thousand Oaks has 2 area codes: 805, 820.

Question 3

Why does Thousand Oaks have more than one area code?

Accepted Answer

As Thousand Oaks 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 Thousand Oaks number?

Accepted Answer

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

Area codes in Thousand Oaks, California

Area codes serving Thousand Oaks

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