LincMad Telephone Area Codes & Splits



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LincMad's Area Code Split Dates
"Old News" Listing

Last updated 2012-09-18

Includes splits begun by 2010-12-31
Now listed in reverse order (most recent first)
Go to more current listing

Old New Area Affected Permissive Mandatory
450 579 QC: Laval, Longueuil, suburbs/banlieues of Montréal (Overlay • Chevauchement) 2010‑08‑21
715 534 WI: Eau Claire, northern/northwestern (Overlay) 2010‑08‑14
256 938 AL: Huntsville, northern and east central (Overlay) 2010‑07‑10
613 343 ON: Ottawa, eastern (Overlay) 2010‑05‑17
541 458 OR: Eugene, Bend, Medford; all but the northwest corner (Overlay) (not Portland, Salem, Astoria) 2010‑02‑10
203 475 CT: New Haven, Stamford, southwest corner (Overlay); ordered, postponed, re-postponed, and finally in effect! 2009‑12‑12
760 442 CA: Oceanside, Escondido, northern San Diego County, Palm Springs, Death Valley, eastern Sierra Nevada, inland areas: originally scheduled as a split for late 2008, changed to an Overlay at the last minute. All existing 760 numbers will remain unchanged. 2009‑11‑21
312
773
872 IL: Chicago (entire city) (Overlay); 312 and 773 retain their distinct geographic identities, but 872 overlays both 2009‑11‑07
809
829
849 Dominican Republic (Overlay • Superposición) 2009‑07‑01
818 747 CA: San Fernando Valley (Los Angeles County) (Overlay) 2009‑05‑18
801 385 UT: Salt Lake City, Provo, Ogden (Overlay) (originally to be a split in 2001, then postponed, postponed again, postponed yet again, and finally reinstated as an overlay) 2009‑03‑29
304 681 WV: entire state (Overlay) 2009‑03‑28
714 657 CA: Anaheim, northern Orange County (Overlay) None 2008‑09‑23
403
780
587 AB: entire province (Overlay) (587 overlays both 403 [Calgary, southern] and 780 [Edmonton, northern]) None 2008‑09‑19
418 581 QC: Québec city, Gaspé (Overlay) None 2008‑09‑19
505 575 NM: Las Cruces, Roswell, Taos (not Albuquerque, Santa Fe, Farmington) 2007‑10‑07 2008‑10‑05
630 331 IL: Aurora, Hinsdale (Overlay) None 2007‑10‑07
985 504 LA: Lower Plaquemines Parish and the Mississippi River Delta (Realignment) (The (504) area code rate centers of Delacroix, Lake Catherine, St. Bernard, and Yscloskey merged into the New Orleans rate center. The (985) area code rate centers of Buras, Pointe-a-la-Hache, and Port Sulphur also merged into New Orleans/(504). The Venice rate center changed from (985) to (504). The (985) 358, 534, 564, 644, 687, and 814 prefixes reverted to (504); the (985) 238 and 333 prefixes changed to (504) but with new 7‑digit local numbers.) 2007‑07‑29 2008‑05‑01
604
250
778 BC: entire province (Overlay Expansion) (778 was originally a concentrated overlay on Vancouver and the urban portion of 604, but was expanded to a general overlay on the entire province, including the 250 area code and the rural areas of 604.) None 2007‑07‑04
815 779 IL: Rockford, Joliet (Overlay) None 2007‑03‑17
514 438 QC: Montréal (OVERLAY) NONE 2006-10-28
519 226 ON: southwestern peninsula, London, Windsor (OVERLAY) NONE 2006-10-28
310 424 CA: San Pedro, Torrance, Santa Monica, Malibu, incl. Avalon (Santa Catalina Island) (service-specific overlay, then overlay, then emergency split revived by CPUC, then postponed indefinitely, finally implemented as an OVERLAY in 2006.) NONE 2006-08-26
706 762 GA: northern Georgia except Atlanta metro area (OVERLAY) NONE 2006-05-16
809 829 Dominican Republic (OVERLAY) NONE 2005-10-01
601 769 MS: Jackson, central (OVERLAY) NONE 2005-04-18
684 AS American Samoa: entire territory; changed from country code +684 (i.e., 011–684) to area code +1 684 (i.e., 1–684) 2004-10-02 2005-04-02
909 951 CA: Riverside and western Riverside County2004-07-17 2004-10-30
903 430 TX: Tyler, northeast (OVERLAY) NONE 2003-04-28
915 432 TX: Midland, Odessa; (El Paso keeps 915) 2003-04-05 2003-10-04
915 325 TX: Abilene, San Angelo 2003-04-05 2003-10-04
248 947 MI: Oakland County (OVERLAY, reinstated by MPSC, then postponed) NONE 2002-09-07
616 269 MI: Kalamazoo, Battle Creek; (Grand Rapids keeps 616) 2002-07-13 2003-02-15
941 239 FL: Lee and Collier Counties, plus the mainland portion of Monroe County (Everglades); Ft. Myers and Naples 2002-03-11 2003-03-10
561 772 FL: Martin, St. Lucie, and Indian River Counties; Ft. Pierce, Sebastian 2002-02-11 2002-11-11
501 479 AR: Fort Smith, Fayetteville, northwest (Note: split boundary changed from original announcement.) 2002-01-19 2002-07-20
219 574 IN: South Bend, north central (Note: La Porte stayed 219, rather than splitting to 574 as originally planned.) 2002-01-15 2002-06-14
219 260 IN: Fort Wayne, northeastern, including Ligonier and Cromwell 2002-01-15 2002-06-14
847 224 IL: northern suburbs of Chicago (OVERLAY) NONE 2002-01-05
419 567 OH: Toledo, northwest (OVERLAY) NONE 2002-01-01
973 862 NJ: Newark, Morristown (OVERLAY) (NOTE: new code originally announced as 356, but changed to 862) NONE 2001-12-29
732 848 NJ: New Brunswick, northern Jersey Shore (OVERLAY) NONE 2001-12-29
201 551 NJ: Hackensack, Jersey City (OVERLAY) NONE 2001-12-29
716 585 NY: Rochester (NOTE: split boundary exactly follows county lines, except that Indian reservations are not divided. Niagara, Erie, Cattaraugus, and Chautauqua Counties, plus the Tonawanda and Oil Springs reservations, keep 716. Points east change to 585.) 2001-11-15 2002-08-17
604 778 BC: Vancouver metro area, Abbotsford, Mission (CONCENTRATED OVERLAY excluding Hope, Chilliwack, Powell River, other areas away from Vancouver metro) (The overlay was later expanded to all of 604, and then expanded again to cover the entire province, both 604 and 250.) NONE 2001-11-03
954 754 FL: Ft. Lauderdale, Broward County (OVERLAY) NONE 2001-09-23
810 586 MI: Macomb County (Warren) (was to be an overlay, changed to a SPLIT) 2001-09-22 2002-03-23
787 939 PR: Puerto Rico (entire island) (OVERLAY) NONE 2001-09-15
404
770
678
470 GA: Atlanta area (OVERLAY) NONE 2001-09-02
540 276 VA: southwestern corner (Note: further split of Roanoke from area 540, originally scheduled for 2005, postponed indefinitely.) 2001-09-01 2002-03-16
520 928 AZ: Flagstaff, Yuma, most of the state (everything but metro Phoenix (602/480/623) and the southeast corner (Tucson, Nogales retain 520)) 2001-06-23 2002-01-06
334 251 AL: Mobile, southwestern 2001-06-18 2002-01-07
905 289 ON: Toronto suburbs, Niagara Falls (OVERLAY) NONE 2001-06-09
804 434 VA: Charlottesville, Lynchburg, Danville, Emporia 2001-06-01 2002-01-15
517 989 MI: Saginaw, northeast lower Michigan (split plan reinstated by MPSC) 2001-04-07 2001-10-06
978 351 MA: northeast (OVERLAY) NONE 2001-04-02
781 339 MA: outer suburbs of Boston (OVERLAY) NONE 2001-04-02
617 857 MA: Boston (OVERLAY) NONE 2001-04-02
508 774 MA: Worcester, Cape Cod, southeast (OVERLAY) NONE 2001-04-02
704 980 NC: Charlotte area (OVERLAY) NONE 2001-04-01
319 563 IA: Dubuque, Davenport/Quad Cities, Clinton, Decorah 2001-03-25 2001-12-02
416 647 ON: city of Toronto (all 6 boroughs) (OVERLAY) NONE 2001-03-05
407 386 FL: DeBary, Deltona (southern Volusia County) (REALIGNMENT) (The DeBary rate center, which includes part of the city of Deltona, was realigned from the 407 area code into the new 386 area code, simultaneously with the 904/386 split.) 2001-02-15 2001-11-05
904 386 FL: the areas west and south of metro Jacksonville (Lake City, Live Oak, Daytona Beach, Palatka) 2001-02-15 2001-11-05
901 731 TN: western, except Memphis 2001-02-12 2001-09-17
504 985 LA: southeast except New Orleans (504) and Baton Rouge (225) 2001-02-12 2001-10-22
316 620 KS: southern Kansas except Wichita 2001-02-03 2001-11-03
330 234 OH: Akron, Canton, Youngstown (OVERLAY) NONE 2000-10-30
817 682 TX: Fort Worth area (OVERLAY) NONE 2000-10-07
503 971 OR: Portland, Salem, but not Tillamook, Astoria; (concentrated OVERLAY) NONE 2000-10-01
912 478 GA: Macon, central 2000-08-01 2001-08-01
912 229 GA: Albany, Valdosta, southwestern 2000-08-01 2001-08-01
new 866 New toll-free code n/a 2000-07-29
515 641 IA: Mason City, Marshalltown, Oskaloosa, Ottumwa, Creston, Guthrie Center 2000-07-09 2000-12-03
914 845 NY: Poughkeepsie, Monticello, Newburgh, New City, all of 914 except Westchester County 2000-06-05 2000-12-09
606 859 KY: Lexington, Covington, suburbs of Cincinnati OH (Note: 859=U.Ky.) 2000-04-01 2000-10-01
703 571 VA: Arlington, Washington suburbs (OVERLAY) NONE 2000-03-01
612 952 MN: Bloomington, southwestern suburbs of Minneapolis 2000-02-27 2001-01-14
612 763 MN: Brooklyn Park, northwestern suburbs of Minneapolis 2000-02-27 2001-01-14
409 979 TX: Bryan/College Station, Wharton, Bay City, southeast Texas west of Houston 2000-02-19 2000-08-05
409 936 TX: Nacogdoches, Lufkin, Huntsville, east Texas north of Houston 2000-02-19 2000-08-05
407 321 FL: Orlando, Kissimmee, not Melbourne, Titusville; (OVERLAY, in a bizarre combination with a split) NONE 1999-12-01
407 321 FL: Melbourne, Titusville, not Orlando, Kissimmee; (SPLIT, in a bizarre combination with an overlay) (Note: 3-2-1-blastoff for the Space Coast) 1999-11-01 2000-10-01
423 865 TN: Knoxville area (not Chattanooga, not Johnson City) (Note: 865=VOL for U.Tenn. Volunteers) 1999-11-01 2000-04-24
516 631 NY: Suffolk County (eastern Long Island) 1999-11-01 2000-04-01
318 337 LA: Lafayette, Lake Charles, southwestern 1999-10-11 2000-07-10
718 347 NY: New York City (Bronx, Brooklyn, Queens, Staten Island; not Manhattan) (OVERLAY) NONE 1999-10-01
414 262 WI: Racine, Kenosha, Waukesha, West Bend, Lake Geneva (not Milwaukee) 1999-09-25 2000-03-04
941 863 FL: Lakeland, Okeechobee 1999-09-20 2000-05-22
212 646 NY: New York City (Manhattan only) (OVERLAY) NONE 1999-07-09
214
972
469 TX: Dallas (inner and outer) (OVERLAY) NONE 1999-07-01
610 484 PA: Allentown, Bethlehem, Reading, Pottstown, Norristown, King of Prussia, Coatesville, Bangor, Bethel (OVERLAY) NONE 1999-07-01
215 267 PA: Philadelphia, Bucks County, Kulpsville (OVERLAY) NONE 1999-07-01
619 858 CA: near north suburbs of San Diego (La Jolla, Poway, Rancho Bernardo, Rancho Santa Fe) 1999-06-12 1999-12-11
609 856 NJ: Camden, Vineland, southwestern 1999-06-12 1999-11-13
616 231 MI: NW lower peninsula; Muskegon, Traverse City 1999-06-05 1999-10-02
314 636 MO: St. Charles, Chesterfield, Union [*] 1999-05-22 2000-02-26
601 662 MS: northern half, Greenville, Tupelo 1999-04-19 2000-05-01
502 270 KY: Bowling Green, Paducah, Owensboro, western 1999-04-19 1999-11-01
602 623 AZ: Glendale, Peoria, Sun City, "West Valley" Phoenix area 1999-04-01 1999-09-01
602 480 AZ: Scottsdale, Mesa, "East Valley" Phoenix area 1999-04-01 1999-09-01
502 270 KY: Louisville, western half (OVERLAY CHANGED TO SPLIT) [*] cancelled cancelled
512 361 TX: Corpus Christi, Victoria, Kingsville [*] 1999-02-13 1999-09-18
805 661 CA: Bakersfield, Earlimart, Lancaster, northern Los Angeles County 1999-02-13 1999-08-14
403 780 AB: Edmonton, Wetaskiwin, Grande Prairie, Jasper, Fort McMurray, Lloydminster, Camrose, northern [*] 1999-01-25 1999-05-18
713
281
832 TX: Houston (inner and outer) (OVERLAY, reversing the previous split and adding a third code) NONE 1999-01-16
702 775 NV: Reno, Carson City, Elko, Ely, everything except most of Clark County (Las Vegas) 1998-12-12 1999-05-15
214
972
214
972
TX: Dallas, Plano, Richardson, Irving, Grand Prairie, Waxahachie, McKinney, Kaufman, Garland, Duncanville, Lewisville (OVERLAY, erasing previous split) NONE 1998-12-05
717 570 PA: Scranton, Wilkes-Barre, Williamsport, Stroudsburg, Selinsgrove, Pottsville, Hazleton 1998-12-05 1999-04-08
209 559 CA: Fresno, Madera, Chowchilla, Tulare, Coalinga, Porterville, Visalia, Kings Canyon/Sequoia N.P.s 1998-11-14 1999-05-15
813 727 FL: Tampa Bay area. OVERLAY CHANGED TO SPLIT. (see revised data above) 1998-10-01
(cancelled)
(N/A)
303 720 CO: Denver metropolitan area (OVERLAY) NONE 1998-09-01
504 225 LA: Baton Rouge, New Roads, Donaldsonville 1998-08-17 1999-04-05
612 651 MN: St. Paul, eastern portion of Twin Cities area 1998-07-12 1999-01-10
408 831 CA: Salinas, Santa Cruz, Monterey, Hollister, King City 1998-07-11 1999-02-20
813 727 FL: St. Petersburg, Clearwater, Dunedin, Port Richey, Pinellas County and western Pasco County 1998-07-01 1999-02-01
305 786 FL: Miami, Dade County (concentrated overlay, did not affect Florida Keys, which retained 305 only until 2002) NONE 1998-07-01
514 450 Québec: Laval, Longueuil, St.-Lambert, Joliette, Granby, St.-Hyacinthe, Lachute; (surrounds but does not include Montréal) 1998-06-13 1999-01-16
213 323 CA: Los Angeles outer downtown "doughnut" 1998-06-13 1999-01-16
809 784 St. Vincent & the Grenadines 1998-06-01 1999-05-31
714 949 CA: Irvine, southern Orange County 1998-04-18 1998-10-17
205 256 AL: Huntsville, Anniston, Decatur, Gadsden, Talladega, northern/northeastern areas 1998-03-23 1998-09-28
919 252 NC: Greenville, Rocky Mount, Kinston, Henderson, Morehead City, Cape Hatteras region 1998-03-22 1998-10-05
803 843 SC: Charleston, Florence, Walterboro, coastal areas 1998-03-22 1998-09-27
704 828 NC: Asheville, Hickory, Boone, western tip 1998-03-22 1998-09-21
510 925 CA: Walnut Creek, Livermore, San Ramon, Concord 1998-03-14 1998-09-12
412 724 PA: Sharon, New Castle, Kittanning, Uniontown, Indiana, Latrobe, McCandless (not Pittsburgh) [*] 1998-02-01 1998-04-30
404
770
678 GA: Atlanta region (includes Atlanta, Marietta, Norcross, Smyrna) (OVERLAYS both 404 & 770) NONE 1998-01-06
910 336 NC: Greensboro, Winston-Salem, Asheboro, Burlington, Roxboro (Note: some areas remained in 910 until permissive date of 1998-03-22.) 1997-12-15
1998-03-22
1998-06-15
313 734 MI: Ann Arbor, Monroe (see note on Livonia) 1997-12-13 1998-07-25
614 740 OH: Lancaster, Zanesville, Newark, Steubenville 1997-12-06 1998-06-06
916 530 CA: Chico, Redding, Lake Tahoe, Yuba City, Yreka 1997-11-01 1998-05-16
405 580 OK: Lawton, Enid, Ponca City, Ardmore, Ada, Hugo, Idabel, Weatherford, Clinton, Guymon 1997-11-01 1998-04-01
809 473 Grenada & Carriacou 1997-10-31 1998-10-31
403
819
867 Yukon, Nunavut, Northwest Territories 1997-10-21 1998-04-26
816 660 MO: Sedalia, Marshall, Maryville, Butler, Moberly, Alexandria, Boonville, Clinton, Warsaw 1997-10-12 1998-04-19
916 707 CA: Dixon (REALIGNMENT) 1997-10-04 1998-05-16
809 767 Dominica 1997-10-01 1998-09-30
809 284 British Virgin Islands 1997-10-01 1998-09-30
801 435 UT: Logan, Tooele, Nephi, Price, Moab 1997-09-21 1998-09-20
601 228 MS: Biloxi, Gulfport, Pascagoula, Bay St. Louis, Hurley (extreme south) 1997-09-15 1998-09-14
615 931 TN: Clarksville, Columbia, Cookeville, Dover, Erin, McMinnville, Sparta, middle TN except Nashville 1997-09-15 1998-01-19
508 978 MA: Lowell, Methuen, Andover, Athol, Barre, Berlin, Billerica, Carlisle, Concord, Gloucester, Groton, Leominster, New Salem, North Reading, Peabody, Salem, Sterling, Sudbury, Wendell 1997-09-01 1998-02-01
617 781 MA: Boston's outer suburbs: Arlington, Bedford, Braintree, Dedham, Halifax, Hanson, Hull, Kingston, Lexington, Lincoln, Lynn, Malden, Medford, Needham, Norwood, Plympton, Randolph, Reading, Revere, Sharon, Stoughton, Waltham, Wellesley, Weymouth, Whitman; NOT Belmont & Watertown 1997-09-01 1998-02-01
216 330 OH: Hudson, Twinsburg, Aurora, Northfield [*] 1997-08-16 1998-04-04
216 440 OH: Ashtabula, Elyria, Mentor, Cleveland suburbs 1997-08-16 1998-04-04
415 650 CA: San Mateo Co., Palo Alto, Mountain View, SFO Airport, Redwood City, "The Peninsula" 1997-08-02 1998-01-31
414 920 WI: Green Bay, Sheboygan, Oshkosh, Jefferson 1997-07-26 1997-10-25
913 785 KS: Topeka, Lawrence, Salina, Hays, Colby 1997-07-20 1998-10-01
210 956 TX: Laredo, Brownsville, Rio Grande Valley 1997-07-07 1997-10-06
210 830 TX: Kerrville, Seguin, Del Rio, Gonzales, Fredericksburg (but not metro San Antonio) 1997-07-07 1997-10-06
Int'l 671 GU: Guam (U.S.) 1997-07-01 1998-07-01
Int'l 670 MP: Commonwealth of the Northern Mariana Islands (C.N.M.I.) (U.S.) (Saipan, Tinian) 1997-07-01 1998-07-01
904 850 FL: Tallahassee, Pensacola, Perry, panhandle 1997-06-23 1998-03-23
818 626 CA: San Gabriel Valley (in Los Angeles Co.): Pasadena, Glendale, Covina, Monterey Park 1997-06-14 1998-02-21
809 868 Trinidad & Tobago 1997-06-01 1998-05-31
809 340 VI: U.S. Virgin Islands 1997-06-01 1997-12-06
908 732 NJ: New Brunswick, Rahway, Jersey shore 1997-06-01 1997-12-06
201 973 NJ: Newark, Paterson, Morristown, Newton 1997-06-01 1997-12-06
410 443 MD: Baltimore, Annapolis, Columbia, Salisbury (OVERLAY) NONE 1997-06-01
301 240 MD: Silver Spring, Frederick, Cumberland (OVERLAY) NONE 1997-06-01
809 649 Turks & Caicos Islands 1997-05-31 1998-06-30
817 940 TX: Wichita Falls, Denton, Childress, Aspermont, Mineral Wells, Gainesville, Graham 1997-05-25 1997-08-24
817 254 TX: Waco, Cisco, Hillsboro, Breckenridge, Killeen, Mexia, Meridian, Stephenville, Cameron 1997-05-25 1997-08-24
810 248 MI: Royal Oak, Pontiac, Oakland County 1997-05-10 1997-09-13
809 876 Jamaica 1997-05-01 1998-07-31
206 425 WA: Everett, Bellevue (east, north Seattle area) 1997-04-27 1997-11-16
206 253 WA: Tacoma, Kent (south Seattle area) 1997-04-27 1997-11-16
501 870 AR: Pine Bluff, Texarkana, West Memphis, Jonesboro, Batesville, Harrison, Arkadelphia 1997-04-14 1997-10-06
809 264 Anguilla 1997-03-31 1997-09-30
619 760 CA: Escondido, Palm Springs, Bishop, Barstow, Lee Vining, north San Diego County, eastern Sierras 1997-03-22 1997-09-27
317 765 IN: Lafayette, Muncie, Richmond, Anderson, Kokomo, Lebanon, Martinsville, Greencastle 1997-02-01 1997-06-28
310 562 CA: Long Beach, Whittier, Norwalk 1997-01-25 1997-07-26
713 281 TX: Houston (outer fringes), Katy, Sugar Land (split reversed 1999-01-16) 1996-11-02 1997-06-06
604 250 BC: Victoria, Kelowna, Kamloops, Prince George 1996-10-19 1997-04-06
312 773 IL: Chicago (uptown, airport) 1996-10-12 1997-01-11
809 869 St. Kitts & Nevis 1996-10-01 1997-03-31
809 242 Bahamas 1996-10-01 1997-03-31
513 937 OH: Dayton, Springfield, Hillsboro 1996-09-28 1997-06-14
214 972 TX: Dallas suburbs/exurbs, McKinney, Kaufman, Waxahachie, Italy; (split reversed 1998-12-05) 1996-09-14 1997-04-18
809 345 Cayman Islands 1996-09-01 1997-08-31
708 630 IL: Aurora, Roselle, Hinsdale (not La Grange) 1996-08-03 1996-11-30
809 664 Montserrat 1996-07-01 1997-06-01
804 757 VA: Virginia Beach, Norfolk, Chincoteague 1996-07-01 1997-02-01
809 246 Barbados 1996-07-01 1997-01-15
809 758 St. Lucia 1996-07-01 1997-01-01
407 561 FL: West Palm Beach, Boca Raton, Ft. Pierce 1996-05-13 1997-04-13
809 268 Antigua & Barbuda 1996-04-01 1997-03-31
612 320 MN: St. Cloud, Alexandria, Little Falls 1996-03-17 1996-09-15
216 330 OH: Akron, Canton, Youngstown (see note) 1996-03-09 1996-06-29
809 787 PR Puerto Rico 1996-03-01 1997-01-31
708 847 IL: Northbrook, Roselle, Skokie 1996-01-20 1996-04-20
314 573 MO: Columbia, Jefferson City, Cape Girardeau 1996-01-07 1996-07-07
904 352 FL: Gainesville, Ocala 1995-12-03 1996-05-20
803 864 SC: Greenville, Spartanburg, Saluda 1995-12-03 1996-05-01
503 541 OR: Eugene, Medford, Bend, Corvallis, The Dalles 1995-11-05 1996-06-30
809 441 Bermuda 1995-10-01 1996-09-30
305 954 FL: Ft. Lauderdale, Broward County 1995-09-11 1996-08-01
615 423 TN: Knoxville, Chattanooga, Johnson City 1995-09-11 1996-02-26
203 860 CT: Hartford, Norwich, Litchfield 1995-08-28 1996-10-04
404 770 GA: Norcross, Smyrna, Tucker 1995-08-01 1995-12-01
703 540 VA: Roanoke, Fredericksburg 1995-07-15 1996-01-27
813 941 FL: Ft. Myers, Sarasota, Bradenton 1995-05-28 1996-03-03
303 970 CO: Grand Jct., Ft. Collins, Vail, Durango, Wiggins 1995-04-02 1996-01-14
602 520 AZ: Tucson, Flagstaff, Yuma, Prescott 1995-03-19 1995-10-21
206 360 WA: Olympia, Bellingham, Vancouver, Bremerton 1995-01-15 1995-08-20
205 334 AL: Montgomery, Mobile, Selma, Roanoke 1995-01-15 1995-05-13

For more recent splits, see the main area code split page.

"Permissive" refers to the date at which it became possible to use either the old or the new area code.

"Mandatory" refers to the date at which it became necessary to use the new area code. If you dial the old area code after the mandatory date, you will reach an error recording, or worse, a wrong number.

Previous versions of this list incorrectly indicated that Chandler, AZ moved from 602 to 520 in 1995. Chandler remained in area code 602; however, it changed to area code 480 in 1999.

Area code 216 (Cleveland, Ohio) split in 1996, with Akron, Canton, and Youngstown moving to the new area code 330. A second split took place on August 16, 1997, with the lakefront outside of Cleveland moving to area code 440. At the same time, however, several communities between Cleveland and Akron switched from 216 to 330. The affected exchanges are Hudson, Twinsburg, Northfield, Aurora, Peninsula, and Richfield. There was a similar realignment of the 513/937 boundary between Cincinnati and Dayton, in mid-2001 in anticipation of the 513/283 overlay. The Franklin exchange realigned from 513 to 937 rather than becoming part of the overlay.

The Dallas and Houston metropolitan areas in Texas had geographic splits in 1996. Both areas again ran out of numbers. In December 1998 and January 1999, the most recent split boundaries were officially "erased"; an additional area code was overlaid in each city in 1999, and additional overlay codes are expected in 2002-03.

State authorities in Pennsylvania cancelled the scheduled overlay of area code 412 (western Pennsylvania, including Pittsburgh) that was to take effect on May 1, 1997. The reason for the reconsideration is that the original plan was to continue to allow local calls within the same area code to be dialed with only the 7-digit number, but FCC regulations require that the area code be dialed on all calls in an overlay area. Regulators decided on a conventional split, with Pittsburgh and some immediate suburbs retaining 412 and the rest of southwest Pennsylvania changing to 724. [back to table] However, in August 2001, the 412 and 724 area codes were reunited under the single 878 overlay, with 10-digit local dialing on all calls.

The Commonwealth of the Northern Mariana Islands (CNMI) and Guam are U.S. territories in the Pacific Ocean. Each had a standard international country code assigned. Beginning on July 1, 1997, and continuing permissively for one year, it was possible to dial these islands using either the old country code or a North American area code. From July 1, 1998, only the new North American area code may be used. From within North America, these points must be dialed "1+" instead of "011+"; from outside North America, the country code "1" must be used. (Indeed, country code +670 has now been assigned for TL Timor-Leste/East Timor.) American Samoa changed from +684 to +1 684 in 2004, and there has been speculation that other Pacific islands might also join the NANP, but there has been no formal proposal to do so. However, on 2011-09-30, the Dutch Caribbean island of Sint Maarten, currently in country code +599, joined the NANP as area code 721; the French side of the same island remains in country code +590.

Officials in Massachusetts, citing the rapidly diminishing supply of numbers in the greater Boston area, advanced the timetable for the splits of area codes 617 and 508, and then pushed back the mandatory date on two further occasions. The final dates are shown above. Note that the final mandatory date coincides with the originally planned permissive date! The state legislature also imprudently played politics with the split boundaries for the 617/781 split. First the suburbs of Watertown and Belmont were reinstated into 617 via a rider on an unrelated piece of legislation. Then ten other suburbs whined "Us, too!" to which the legislature caved in. The acting governor vetoed this lunacy, and, in fairness to the second set of suburbs, introduced a bill to return Watertown and Belmont to area code 781 as originally slated. That bill died in the state legislature; the splits have gone mandatory, with no indication that Watertown or Belmont will be reinstated into 781 where they belong. Had all twelve of these suburbs retained the 617 area code, another split of 617 would have been required in less than one year! As it stands, Massachusetts has already announced the next round of new area codes for 617 and 508 and their offspring, with overlays coming in April 2001. Each of the four area codes will receive a separate overlay code: 617/857, 781/339, 508/774, and 978/351. The rules for dialing numbers in the overlays are not yet clear, since Massachusetts has a confusing mish-mash of rules. In some cases, 1+ is required on a call that carries no toll, and in other cases 1+ is not required on a call that is charged at higher rates than calls within the same exchange.

For details of the multiple splits of the old area code 809 in the Caribbean, see the separate page.


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