- Area codes 815 and 779
Area code 815 is a
telephone area code for most of the northern third of the state ofIllinois , less the core of theChicago metropolitan area and the area around Moline. It was one of the four original Illinois area codes set up in1947 . A newoverlay area code 779 was implemented onMarch 17 ,2007 . No old telephone numbers were reassigned to this area code; rather, it became available for newtelephone prefix es on that date. A month earlier, onFebruary 17 ,11-digit dialing was implemented for area code 815 in preparation for the 779 overlay.Municipalities in area codes 815/779
*Adeline
*Albany
*Amboy
*Andres
*Apple River
*Argyle
*Aroma Park
*Ashkum
*Ashton
*Baileyville
*Ballou
*Belvidere - Prefixes include: 544 547
*Bonfield
*Braceville - Prefixes include 237
*Bradley
*Bourbonnais
*Braidwood - Prefixes include: 415 458
*Brush Point
*Buckingham
*Buffalo Grove
*Bull Valley
*Byron
*Caledonia
*Capron
*Carbon Hill - Prefixes include 634 518
*Cedar Point
*Cedarville
*Chadwick
*Chana
*Cherry Valley - Prefixes include: 332
*Channahon - Prefixes include: 467 521
*Coal City - Prefixes include: 634 518
*Coleta
*Coltonville
*Compton
*Coral
*Cortland
*Crest Hill
*Creston
*Crystal Lake - Prefixes include: 204 219 261 276 301 356 404 425 444 455 459 477 479 526 788 893
*Crystal Lawns
*Dakota
*Dana
*Davis
*Davis Junction
*Daysville
*Deer Grove
*DeKalb - Prefixes include: 213 593 746 748 751 752 753 754 755 756 757 758 761 762 764 766 787 862 977
*Diamond
*Dixon - Prefixes include: 285 288 284
*Durand
*Dwight - Prefixes include: 584
*Earlville
*East Brooklyn
*East Dubuque
*Egan
*Eleroy
*Elizabeth
*Elwood
*Esmond
*Essex
*Fairdale
*Fairmont
*Flagg Center - Prefixes include: 561, 562
*Forreston
*Frankfort - Prefixes include: 464 469 806
*Frankfort Square
*Franklin Grove
*Freeport - Prefixes include: 232 233 235 238 266 275 291 297 541 599 616 618 650 656 801 821 908 990
*Fulton
*Galena
*Garden Prairie
*Gardner - Prefixes include 237
*Genoa
*German Valley - Prefixes include: 362
*Godley
*Grand Detour
*Grand Ridge
*Grant Park - Prefixes include: 465
*Granville
*Greenwood
*Haldane
*Hanover
*Harmon
*Harrison
*Harvard
*Hebron
*Herscher
*Holiday Hills
*Homer Glen
*Hillcrest
*Hinckley
*Hopkins Park
*Ingalls Park
*Irwin
*Johnsburg
*Joliet - Prefixes include: 720 725 727 729 730 741 744
*Kangley
*Kankakee - Prefixes include 932 933 934 935
*Kent
*Kings - Prefixes include: 561, 562
*Kingston
*Kinsman
*Kirkland
*Lanark
*Lakemoor
*Lake Summerset
*Lakewood
*Lakewood Shores
*La Salle - Prefixes include: 220 223 224
*Leaf River
*Lee
*Leland
*Lena
*Leonore
*Lindenwood - Prefixes include: 393
*Lisbon
*Lockport - Prefixes include: 838 836 834 588
*Lostant
*Loves Park
*Lyndon
*Machesney Park
*Malta
*Manhattan - Prefixes include: 478
*Manteno
*Maple Park
*Marengo
*Marseilles
*Mazon
*McCullom Lake
*McHenry - Prefixes include: 344 363 385 578 759
*Mendota
*Menominee
*Meriden
*Milbrook
*Milledgeville
*Millington
*Minooka - Prexies include 546
*Mokena - Prefixes include: 479
*Momence - Prefixes include: 472
*Monroe Center - Prefixes include: 393
*Morris - Prefixes include 941 942
*Morrison
*Mount Carroll
*Mount Morris
*Naplate
*Nelson
*Newark
*New Milford
*New Lenox - Prefixes include: 485 462 463 919 212
*Nora
*North Utica
*Norway
*Odell
*Oglesby
*Oneco
*Orangeville
*Oregon - Prefixes include: 732
*Ottawa - Prefixes include: 431 433 434
*Paynes Point
*Pearl City
*Pecatonica
*Peru
*Plainfield
*Polo
*Poplar Grove
*Prairie Grove
*Preston Heights
*Princeton - Prefixes include: 872 875 876 879
*Prophetstown
*Ransom
*Reddick
*Richmond
*Ridott
*Ringwood
*Ritchie
*Rock City
*Rockdale
*Rock Falls
*Rockford - Prefixes include: 201 202 209 218 222 226 227 229 231 242 243 262 282 289 296 298 299 315 316 319 378 381 387 391 394 395 397 398 399 470 480 484 489 490 494 505 509 516 519 520 540 543 558 601 608 621 633 636 637 639 641 654 670 681 703 708 713 720 721 742 749 763 847 860 870 871 877 904 914 921 961 962 963 964 965 966 967 968 969 971 972 977 978 979 980 983 985 986 987 988 997
*Rockton- Prefixes include: 624
*Rochelle - Prefixes include: 561, 562
*Rodden
*Romeoville
*Roscoe- Prefixes include: 623
*Rutland
*St. Anne
*Sandwich
*Savanna
*Scales Mound
*Seneca - Prefixes include 357
*Seward
*Shabbona
*Shannon
*Sheridan
*Shirland
*Shorewood
*Somonauk
*South Beloit- Prefixes include: 389
*South Wilmington - Prefixes include 237
*Spring Grove
*Spring Valley - Prefixes include: 663 664
*Sterling
*Steward
*Stillman Valley
*Stockton
*Streator
*Sublette
*Sun River Terrace
*Sycamore - Prefixes include: 895 899
*Symerton
*Tampico
*Thomson
*Timberlane
*Toluca
*Tonica
*Triumph
*Troy Grove
*Union
*Union Hill
*Verona
*Waddams Grove
*Warren
*Waterman
*West Brooklyn
*Wilmington Prefixes include: 476
*Wilton
*Wilton Center
*Winnebago
*Winslow
*Wonder Lake (CDP)
*Wonder Lake (village)
*Woosung
*WoodstockExternal links
* [http://www.att.com/gen/general?pid=1496 Area Code Overlay Approved for 815 Area Code] - general information from
AT&T , theRBOC for the area codeee also
*
List of NANP area codes
*List of Illinois area codes Area Code Box 2|State=IL
This= Area codes 779 and 815 | N= 608, 262
S= 309, 217
E= 847/224, 630/331, 708
W= 563
S1=WI
S2=IN
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