Question 1

What is the area code for Hillsboro?

Accepted Answer

The main area code for Hillsboro, Oregon is 503. Hillsboro is now served by 2 area codes in total: 503, 971.

Question 2

How many area codes does Hillsboro have?

Accepted Answer

Hillsboro has 2 area codes: 503, 971.

Question 3

Why does Hillsboro have more than one area code?

Accepted Answer

As Hillsboro used up the numbers available in its original area code (503, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a Hillsboro number?

Accepted Answer

Dial all 10 digits — the area code (503 or 971) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.

Area codes in Hillsboro, Oregon

Area codes serving Hillsboro

Nearby cities