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Local 331 numbers

Get a 331 phone number for Aurora, Naperville and Wheaton.

Ask for 331 when you create a number on ExpressNumber, and the number you hand out reads as the western suburbs of Chicago, from Aurora to Naperville. It rings the phone you already carry, and you burn it in one tap.

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This is how you get a 331 number.

  1. Start your 7 days free and open Create a number.
  2. Type 331 as the area code and give the number a name.
  3. Hand it out. Calls ring the phone you already carry, and texts land in your inbox.
  4. Burn it in one tap when you are done. Calls and texts to it stop at once.
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People ask for 331 when the search is in Aurora, Naperville or Wheaton.

A condo for rent in Naperville or Wheaton draws calls from many strangers.

List it with a 331 number, take the calls on your own phone and burn the number once the lease is signed.

A used SUV or a trailer for sale near Geneva or St. Charles brings texts all week.

Post a 331 number with the photos, set it to Texts only and keep your own number off the ad.

A kitchen remodel or a landscaping quote in Elmhurst or Hinsdale ends in follow-up calls.

Give each contractor its own 331 number. Block the ones you did not choose.

This is where a 331 number is from.

Area code 331 is an all-services overlay of 630, so it serves the same western suburbs of Chicago. The Illinois Commerce Commission names Aurora, Elmhurst, Geneva, Hinsdale, Itasca, Lemont, Naperville, Oswego and Wheaton.

The numbering administrator's letters add Elburn, Kaneville, Lisle, Plano, Roselle, St. Charles, West Chicago and Yorkville. Chicago itself uses 312, 773 and 872.

  • Aurora
  • Naperville
  • Wheaton
  • Downers Grove
  • Elmhurst
  • Lombard
  • Oswego
  • St. Charles
  • West Chicago
  • Geneva
  • Lemont
  • Hinsdale

These are the facts about area code 331.

From the public records of the body that runs US phone numbering, read October 21, 2026.

Place
Aurora, Naperville and Wheaton, Illinois
In service since
2007
Local calls are dialed with
1 plus ten digits
Shares its area with
630 (1996)

On June 30, 1999, the Illinois Commerce Commission approved laying a second code over the 630 area, so no one had to change a number. 331 entered service on October 7, 2007.

Every local call has needed 1 plus all ten digits since October 7, 2007, whether the number starts with 331 or 630.

Try it free for 7 days.

Then pick the plan that fits how many numbers you hand out.

Basic

7 days free

$9.99/mo

  • 5 numbers, one for each site, store or dealer
  • 100 forwarded minutes a month
  • Burn a number in one tap
  • Extra numbers $1 a month each
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Pro

7 days free

$29.99/mo

  • 100 numbers
  • 1,000 forwarded minutes a month
  • A number per vendor, client or listing
  • Extra numbers 50¢ a month each
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$0 today. Monthly plans, cancel any time.

People ask these questions about getting a 331 number.

More in the full FAQ.

Create a number in your dashboard, type 331 as the area code and give it a name, such as Condo for rent. It is live in about a minute. You do not need to live in Illinois: calls ring the phone you already carry.

Yes, for taking calls and texts. A landscaper, a tutor or a baker in Aurora can put a 331 number on the flyer and the website, take the calls on their own phone and burn the number when the job is done.

Yes. The 331 area takes in Aurora, Naperville, Wheaton, Elmhurst and Oswego. 630 numbers cover the same area.

No. Your numbers are receive-only: they take calls and texts, and they never make them. You answer calls on your own phone, and you cannot reply to a text from the inbox.

You get 7 days free and pay $0 today. After 7 days your plan starts: $9.99 a month for Basic or $29.99 a month for Pro. Cancel before then and you pay nothing.

More area codes

Every fact on this page comes from public numbering records.

The state, the dates and the related codes are rows of the North American Numbering Plan Administrator's area code database. The places are from its planning letters and the state’s own pages. Read October 21, 2026.

Put 331 on a number you can burn.

Hand out a number you can burn. Keep the one your family calls.

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