Area code · Illinois
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The 331 area code covers Aurora, Illinois and the wider Chicago suburbs, so a 331 number reads as local to anyone in that part of the state. You pick it right in the Ghost app, no waiting on a carrier store or a new SIM. Set it up and start calling and texting in minutes.
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Why choose a 331 virtual phone number?
Look like you're already in the suburbs
If you're selling something online, dating, or job hunting around Aurora or Naperville, a 331 number signals you're local before the conversation even starts.
Moving to the Chicago suburbs
Relocating to Elgin, Waukegan, or Schaumburg before you actually move? Grab the number first so your new contacts, landlord, or employer see a familiar area code from day one.
Keep the number after you leave
If you're headed away from Joliet or Cicero but still have family, clients, or old friends there, you can keep dialing out with a 331 number instead of switching to wherever you land.
Split work from personal life
Give out a 331 number for buy-and-sell listings or side gigs in Evanston or Aurora, and keep your main line for the people who actually know you.
Recognized across the metro
331 has been dialed alongside 630 for years across these same suburbs, so locals in Naperville or Schaumburg won't blink at seeing it on a call.
How to get a 331 phone number
- 1
Pick your area code
Choose any 331 area code, or any other US or Canadian code.
- 2
Choose your number
See available numbers instantly and pick the one you like.
- 3
Start calling and texting
Your number works over WiFi or data for everyday calling and texting. No SIM card, no new phone plan.
- 4
Stay in control
Mute it, set it to Do Not Disturb, or delete and replace it whenever you want.
Ghost can't be used for 911 or emergency calls, so keep your regular line for those.
Get My 331 NumberAbout the 331 area code
Area code
331
State
Illinois
Overlay codes
312, 630, 773, 815
Cities served
12+
The 331 area code serves Aurora, Naperville, Joliet, Elgin, Waukegan, Cicero, Schaumburg, and Evanston, covering a broad stretch of the Chicago suburbs in Illinois.
331 is an overlay on the same region as 630, meaning both codes serve these suburbs together. Nearby Chicago-area codes 312, 773, and 815 cover the city itself and other parts of the surrounding region, but 331 and 630 share this exact footprint.
The region runs on America/Chicago time, so calls and texts to and from a 331 number line up with the rest of Chicago and its suburbs without any timezone math.
Coverage from public numbering and census data. Sources
Local economy
Why do business in Aurora?
The 331 area code sits across a stretch of Chicago's suburbs that blends warehousing, healthcare, and professional office work spread from Aurora to Schaumburg.
Logistics and distribution
Joliet and the surrounding corridor sit on major freight routes, making warehousing and distribution a steady source of work across the region.
Healthcare
Hospitals and clinics across Aurora, Naperville, and Elgin employ a large share of the local workforce and serve residents throughout the suburbs.
Professional and office services
Naperville and Schaumburg host a mix of corporate offices and professional firms, drawing commuters from across the 331 region.
331 numbers by city
Frequently asked questions
How fast can I get a 331 phone number?
You can pick a 331 number in the Ghost app and start using it in minutes. No store visit, no new SIM, no waiting on a carrier.
Which cities use the 331 area code?
331 covers Aurora, Naperville, Joliet, Elgin, Waukegan, Cicero, Schaumburg, and Evanston, all part of the Chicago suburbs in Illinois.
Is 331 the same region as 630?
Yes. 331 is an overlay code layered on top of 630, so both codes serve the exact same suburbs around Aurora and Naperville.
How much does Ghost cost?
Ghost Premium is $60 every 2 months and includes 5 phone numbers, unlimited calling and texting in the US and Canada, your choice of area code, and the ability to delete and replace your number. Cancel anytime. No contracts.
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Pick a 331 (or 312, 630, 773, 815) number and start calling and texting in minutes.
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