Area codes 815 and 779
From Wikipedia, the free encyclopedia
Area code 815 is a telephone area code for most of the northern third of the state of Illinois, less the core of the Chicago metropolitan area and the area around Moline. It was one of the four original Illinois area codes set up in 1947. An the new overlay area code 779 was implemented on March 17, 2007. No old telephone numbers were reassigned to this area code; rather, it became available for new telephone prefixes on that date. A month earlier, on February 17, 11-digit dialing was implemented for area code 815 in preparation for the 779 overlay.
[edit] Municipalities in area codes 815/779
- Belvidere
- Bolingbrook
- Coal City
- Crest Hill
- Crystal Lake - Prefixes include: 204 219 261 276 301 356 404 425 444 455 459 477 479 526 788 893
- DeKalb - Prefixes include: 748 753 756 758
- Dixon - Prefixes include: 285 288 284
- Dwight - Prefixes include: 584
- East Dubuque
- Frankfort - Prefixes include: 464 469 806
- Freeport - Prefixes include: 232 233 235 238 266 275 291 297 541 599 616 618 650 656 801 821 908 990
- Galena
- Harvard
- Joliet - Prefixes include: 720 725 727 729 730 741 744
- Kankakee
- La Salle - Prefixes include: 220 223 224
- Lockport - Prefixes include: 838 836 834 588
- Manhattan - Prefixes include: 478
- Marengo
- McHenry
- Mendota
- Mokena - Prefixes include: 479
- Momence - Prefixes include: 472
- Morris
- New Lenox - Prefixes include: 485 462 463 919 212
- Oregon - Prefixes include: 732
- Ottawa - Prefixes include: 431 433 434
- Plainfield
- Princeton - Prefixes include: 872 875 876 879
- 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
- Romeoville
- Roscoe
- Spring Valley - Prefixes include: 663 664
- Streator
- Sycamore - Prefixes include: 895 899
- Tinley Park
- Woodstock
[edit] External links
- List of NANP area codes
- North American Numbering Plan
- North American Numbering Plan Administration
- NANPA Area Code Map of Illinois
- Whitepages Area code Map
- Area Code Overlay Approved for 815 Area Code - general information from AT&T, the RBOC for the area code
| State of Illinois area codes: 217, 224, 309, 312, 331, 618, 630, 708, 773, 779, 815, 847 | ||
|---|---|---|
| North: 608, 262 | ||
| West: 563 | Area codes 779 and 815 | East: 847/224, 630/331 |
| South: 309, 217 | ||
| State of Wisconsin area codes: 262, 414, 608, 715, 920 | ||
| State of Indiana area codes: 219, 260, 317, 574, 765, 812 | ||
