Question 1

What is the area code for Naperville?

Accepted Answer

The main area code for Naperville, Illinois is 630. Naperville is now served by 2 area codes in total: 630, 331.

Question 2

How many area codes does Naperville have?

Accepted Answer

Naperville has 2 area codes: 630, 331.

Question 3

Why does Naperville have more than one area code?

Accepted Answer

As Naperville used up the numbers available in its original area code (630, in service since 1996), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a Naperville number?

Accepted Answer

Dial all 10 digits — the area code (630 or 331) followed by the 7-digit local number. From outside the U.S., dial +1, then the area code and number.

Area codes in Naperville, Illinois

Area codes serving Naperville