Question 1

What is the area code for Oshawa?

Accepted Answer

The main area code for Oshawa, Ontario is 905. Oshawa is now served by 4 area codes in total: 905, 289, 365, 742.

Question 2

How many area codes does Oshawa have?

Accepted Answer

Oshawa has 4 area codes: 905, 289, 365, 742.

Question 3

Why does Oshawa have more than one area code?

Accepted Answer

As Oshawa used up the numbers available in its original area code (905, in service since 1993), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a Oshawa number?

Accepted Answer

Dial all 10 digits — the area code (905 or 289 or 365 or 742) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.

Area codes in Oshawa, Ontario

Area codes serving Oshawa

Nearby cities