--- title: "Illinois phone numbers and area codes | Chargezen" description: "Illinois has 17 area codes in service. See each code, its overlays and time zone, and open Illinois numbers for calls and texts." url: "https://chargezen.com/phone-numbers/illinois" lang: "en" --- Canonical URL: https://chargezen.com/phone-numbers/illinois # A Illinois business number that answers. 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. [Get a Illinois number](https://admin.chargezen.com/signup) area codes in service 17 area codes in service time zone Central time zone on every number Calls + texts on every number ## Illinois area codes. 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. * 217 Since 1947, shares with 447 * 224 Since 2002, shares with 847 * 309 Since 1957, shares with 861 * [312 Since 1947, shares with 872](https://chargezen.com/phone-numbers/illinois/312-area-code) * 331 Since 2007, shares with 630 * 447 Since 2021, shares with 217 * 464 Since 2022, shares with 708 * 618 Since 1947, shares with 730 * 630 Since 1996, shares with 331 * 708 Since 1989, shares with 464 * 730 Since 2023, shares with 618 * 773 Since 1996, shares with 872 * 779 Since 2007, shares with 815 * 815 Since 1947, shares with 779 * 847 Since 1996, shares with 224 * 861 Since 2023, shares with 309 * 872 Since 2009, shares with 312 and 773 ## Area code guide. Where the code reaches, its overlays and neighbors, and the numbers open right now. * [312 Downtown Chicago, IL](https://chargezen.com/phone-numbers/illinois/312-area-code) ## Open Illinois numbers 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. ## How Concierge answers a Illinois number. Customers call or text your local number. A digital employee answers, and your team steps in when it should. 1. 1 ### A customer calls or texts Concierge picks up on your Illinois number, recognizes customers by their phone number and pulls up their orders and history. 2. 2 ### It handles the request Order status, changes, refunds within your rules, and questions about your products. 3. 3 ### A teammate joins if needed One tap to join the call. Concierge introduces your teammate to the caller first. 4. 4 ### Everything stays on record 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. ## Get a Illinois number that answers. Calls and texts on one local number, answered day and night, with your team one tap away. [Get a number](https://admin.chargezen.com/signup) [See Concierge](https://chargezen.com/concierge) ## Common questions ### How many area codes does Illinois have? 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. ### What time zone is Illinois in? All of Illinois is on Central time. ### Can I text from a Illinois number? 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. ### Can I keep my number if I switch? 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. ## More phone numbers. [ ### All phone numbers Search by area code or state, and compare local with toll-free.](https://chargezen.com/phone-numbers) [ ### Toll-free numbers 800, 833, 844, 855, 866, 877 and 888 on one page.](https://chargezen.com/phone-numbers/toll-free) [ ### New York numbers 23 area codes in service, with live numbers.](https://chargezen.com/phone-numbers/new-york) [ ### California numbers 41 area codes in service, with live numbers.](https://chargezen.com/phone-numbers/california) [ ### A business number One toll-free or local number for calls and texts, or bring your own.](https://chargezen.com/concierge/features/business-phone-number) [ ### 10DLC Glossary: the registration US carriers require for business texts on local numbers.](https://chargezen.com/glossary/10dlc-10-digit-long-code) Sources: area codes, in-service years, overlays and time zones from the [NANPA NPA database](https://www.nanpa.com/reports/npa-reports) (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.