Illinois area codes grew out of Chicago. The 312 code once covered the whole Chicago area. Today the city and its closest suburbs use nine codes, and every one shares its area with an overlay. Get a Illinois number for calls and texts, and let Concierge answer it.
Inside Chicago, 312 covers downtown and 773 covers the rest of the city. The 872 code overlays both, so a new Chicago number can start with any of the three. The suburbs ring the city: 847 and 224 to the north, 630 and 331 to the west, and 708 and 464 to the south and west.
Downstate, 815 and 779 cover northern Illinois outside the suburbs, including Rockford. Peoria uses 309 and 861, Springfield and Champaign use 217 and 447, and southern Illinois uses 618 and 730.
All of Illinois is on Central time.
Where the code reaches, its overlays and neighbors, and the numbers open right now.
A live sample of local Illinois numbers from our carrier, from any of the state's area codes. Numbers are not held, so they can be taken at any time.
Customers call or text your local number. A digital employee answers, and your team steps in when it should.
Concierge picks up on your Illinois number, recognizes customers by their phone number and pulls up their orders and history.
Order status, changes, refunds within your rules, and questions about your products.
One tap to join the call. Concierge introduces your teammate to the caller first.
Calls and texts land in your team inbox, in one history for each customer.
You choose who answers each number: a digital employee takes every call, a teammate gets the first ring and Concierge picks up if nobody answers, or only teammates answer.
Calls and texts on one local number, answered day and night, with your team one tap away.
NANPA lists 17 area codes in service in Illinois: 217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 861 and 872.
All of Illinois is on Central time.
Yes. A Illinois number from Chargezen takes both calls and texts. US carriers require 10DLC registration before a business texts from a local number, and Chargezen files it for you from the details you provide. Concierge answers the texts as well as the calls.
Yes. Bring your Illinois number over from your current provider. Chargezen checks that the number can move, you sign a letter of authorization in Chargezen, and you follow the transfer there. The number stays the same, area code included.
Sources: area codes, in-service years, overlays and time zones from the NANPA NPA database (North American Numbering Plan Administrator), checked October 18, 2026. NANPA lists the original area codes as in service from January 1, 1947. Cities, counties and neighboring codes are public geography. Available numbers come live from our carrier, change constantly and are not held for you.
