Area code · Illinois
Get a 331 phone number
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Ghost gives you a real Aurora, Illinois phone number with the 331 area code, the overlay code shared by many people across Naperville, Joliet, Elgin, Waukegan, Cicero, Schaumburg, and Evanston. Pick 331 as your area code in the app and start calling and texting in minutes.
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Why choose a 331 virtual phone number?
One number for Aurora and Naperville
Aurora and Naperville sit next to each other and form one connected part of the western suburbs. A 331 number moves with you between the two without looking like an out-of-town caller.
331 runs on the same map as 630
331 was added as an overlay over the existing 630 footprint, so a 331 number covers the same ground that 630 already does. To anyone in that footprint, 331 reads exactly as local as 630.
Elgin, Joliet, and Waukegan carry it too
These cities are part of the same 331 service area as Aurora. If you're selling something or catching up with someone in Elgin or Joliet, a 331 number matches the numbers they already use.
Schaumburg and Evanston are in the mix
331 also reaches Schaumburg and Evanston, so a single Ghost number stays consistent whether you're coordinating with contacts near the Chicago border or out toward the northwest suburbs.
Cicero shares the same numbering
Cicero is another city where 331 numbers are common. That makes it useful for keeping one line that already looks familiar to contacts across that stretch of Cook County suburbs.
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
Pick one from the available list.
- 3
Call and text
Over Wi-Fi or data. No SIM card.
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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 was layered on top of 630 to cover the same stretch of Chicago's western and northern suburbs, including Aurora, Naperville, Joliet, Elgin, Waukegan, Cicero, Schaumburg, and Evanston. The broader region also carries 312 and 773, the codes tied to Chicago itself, and 815 further out.
Everything here runs on Central Time. Because 331 is an overlay, it occupies the exact same geographic area as 630 rather than a separate slice of the map, so the two codes sit side by side across the same cities.
The cities carrying 331 span a wide arc of the Chicago suburbs, from Waukegan up north down to Joliet in the south, and from Aurora and Naperville out west over to Evanston near the city line. That spread covers a mix of established suburban downtowns and newer commuter communities.
Coverage from public numbering and census data. Sources
Local economy
Why do business in Aurora?
The 331 region covers a mix of suburban centers west and north of Chicago, from Aurora's neighborhoods to Naperville's office corridors and Joliet's transportation routes.
Healthcare
Hospitals and clinics across Aurora, Naperville, and the surrounding suburbs are steady sources of local employment.
Education
School districts and community colleges throughout the region employ a large share of local workers, from Aurora out to Elgin and Schaumburg.
Logistics and distribution
Joliet and the highway corridors running through the region support a significant amount of warehousing and distribution work tied to the greater Chicago area.
331 numbers by city
Frequently asked questions
How fast can I get a 331 phone number?
You can get one in minutes, right in the Ghost app. Choose 331 as your area code and you're ready to call and text.
What cities does the 331 area code cover?
331 overlays 630 across the western and northern Chicago suburbs, and it's carried by many people in Aurora, Naperville, Joliet, Elgin, Waukegan, Cicero, Schaumburg, and Evanston.
Can I add a 331 number without giving up the one I already have?
Yes. Ghost adds a second number to your iPhone. The number you already have keeps working exactly as it does now, alongside your new 331 line.
Ready for your 331 number?
Pick a 331 (or 312, 630, 773, 815) number and start calling and texting in minutes.
Get My 331 Number