Illinois area codes: all 17 codes and where they ring

All Illinois area codes

Based on the NANPA area code report, the rate-centre report and the exhaust projections, file of 11/01/2026. This is not an official NANPA website.

How Illinois received its area codes

1. 1947: 217 belonged to the original 1947 codes and covered Alexander, Alvin and Arcola.
2. 1947: 312 belonged to the original 1947 codes and served Chicago.
3. 1947: 618 belonged to the original 1947 codes and covered Addieville, Albers and Albion.
4. 1947: 815 belonged to the original 1947 codes and covered Amboy, Apple River and Ashkum.
5. 1957: 309 began as a new code for Abingdon, Adair and Albany.
6. 1989: 708 separated from 312 to serve Beecher, Bellwood and Berwyn.
7. 1996: 847 separated from 708 to serve Algonquin, Antioch and Arlington Heights.
8. 1996: 630 separated from 708 to serve Aurora, Bartlett and Batavia.
9. 1996: 773 separated from 312 to serve Chicago.
10. 2002: 224 became an overlay for 847 across the same area.
11. 2007: 779 became an overlay for 815 across the same area.
12. 2007: 331 became an overlay for 630 across the same area.
13. 2009: 872 became an overlay for 312 across the same area.
14. 2021: 447 became an overlay for 217 across the same area.
15. 2022: 464 became an overlay for 708 across the same area.
16. 2023: 861 became an overlay for 309 across the same area.
17. 2023: 730 became an overlay for 618 across the same area.

Illinois dialling

The 217, 618, 309, 447, 861 and 730 area codes use 10-digit dialling for local calls and 1 + 10-digit dialling for long-distance calls.

Calls in 464, 872, 331, 779, 224, 773, 630, 847, 708, 815 and 312 need 1 + 10-digit dialling. This applies to both local and long-distance calls.

Locations served by each Illinois code

217 and 447 form one overlay area with 265 rate centres

Catlin, Casey, Carthage, Carrollton, Carlinville, Cantrall, Camp Point, Burton, Buffalo, Buckley, Brocton, Broadlands, Bowen, Bondville, Bluffs, Blue Mound, Bismarck, Bethany, Benld, Bement, Beason, Beardstown, Baylis, Basco, Barry, Augusta, Auburn, Atwood, Atlanta, Athens, Assumption, Ashmore, Ashland, Arthur, Armstrong, Argenta, Arenzville, Alexander, Alvin, and Arcola. The 217 page lists 225 more.

618 and 730 form one overlay area with 242 rate centres

Calhoun, Cairo, Burnt Prairie, Bunker Hill, Brussels, Brownstown, Browns, Broughton, Brookport, Brighton, Bridgeport, Breese, Bluford, Blairsville, Blair, Birds, Bible Grove, Bethalto, Benton, Bellmont, Belleville, Belle Rive, Belle Prairie, Beecher City, Beckemeyer, Batchtown, Bartelso, Baldwin, Aviston, Ava, Ashley, Annapolis, Anna, Alton, Altamont, Allendale, Alhambra, Addieville, Albers, and Albion. The 618 page lists 202 more.

815 and 779 form one overlay area with 198 rate centres

Served places include Apple River, Ashkum, Amboy and Ashton. Earlville, Dwight, Durand, Dover, Donovan, Dixon and Depue are included. Dekalb, Davis, Danforth, Dakota, Cullom, Crystal Lake and Creston are served. Crescent City, Cornell, Compton, Coleta, Coal City, Clifton and Cissna Park are included. Cherry Valley, Chenoa, Chebanse, Chatsworth, Chadwick, Cedarville and Cedar Point are served. Capron, Campus, Cabery, Byron, Bureau and Braidwood are included. Belvidere and Beaverville are served. The 815 page lists 158 more.

309 and 861 serve one overlay area that has 171 rate centres

Danvers, Cuba, Cropsey, Cordova, Cooksville, Congerville, Colfax, Colchester, Chillicothe, Castleton, Carlock, Canton, Camp Grove, Cameron, Cambridge, Bushnell, Buda, Brimfield, Bradford, Bloomington, Blandinsville, Bishop Hill, Biggsville, Benson, Bellflower, Bath, Bardolph, Avon, Atkinson, Astoria, Arrowsmith, Annawan, Andover, Altona, Alpha, Alexis, Aledo, Abingdon, Adair, and Albany. The 309 page lists 131 more.

One overlay area with 31 rate centres uses 708 and 464

Places served include Beecher, Bellwood and Berwyn. Blue Island, Brookfield, Calumet City and Chicago Heights are also included. Cicero, Crete, Forest, Harvey, Homewood and La Grange are served. Lansing, Maywood, Mokena, Monee and Oak Forest South are included. Oak Lawn, Oak Park, Orland, Palos Park and Peotone are served. River Grove, Riverdale, Riverside, Summit and Thornton are included. Tinley Park, Western Springs and Willow Springs are served.

One shared overlay area contains 40 rate centres for 847 and 224

Served places include Zion, Winnetka, Wilmette, Wheeling, Waukegan and Wauconda. Skokie, Round Lake, Roselle, Plato Center and Pistakee Highlands are included. Park Ridge, Palatine, Northbrook, Mundelein and Libertyville are served. Lake Zurich, Lake Villa, Lake Forest, Huntley and Highland Park are included. Hampshire, Half Day, Grayslake, Glenview and Glencoe are served. Franklin Park, Fox Lake, Evanston, Elk Grove and Elgin are included. Dundee, Des Plaines, Deerfield, Cary and Bensenville are served. Barrington, Antioch, Arlington Heights and Algonquin are included.

630 and 331 share one overlay area with 25 rate centres

The area includes Yorkville, Wheaton, West Chicago, Warrenville, Sugar Grove and Saint Charles. Roselle, Plano, Oswego, Naperville, Lombard and Lemont are served. Kaneville, Itasca, Hinsdale, Glen Ellyn, Geneva and Elmhurst are included. Elburn, Downers Grove, Big Rock and Bensenville are served. Bartlett, Batavia and Aurora are included.

Will a new area code come to Illinois?

Not for years: NANPA forecasts that 224/847 will be the first to run out, in 2033.

Area codes across the state line from Illinois

• St. Louis, MO-IL uses Missouri codes 314, 573, 636, 557 and 235.
• Chicago-Naperville-Elgin, IL-IN: Indiana 219.

Illinois border states: area codes

• Indiana uses 317, 812, 219, 765, 260, 574, 930 and 463
• Iowa uses 319, 515, 712, 641 and 563
• Kentucky uses 502, 606, 270, 859 and 364
• Missouri uses 314, 816, 417, 573, 660, 636, 557, 975 and 235
• Wisconsin uses 414, 715, 608, 920, 262, 534, 274 and 353

Cities in Illinois

Area codes for Chicago.

Questions about Illinois area codes