List of area code overlays

An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay complexes are used to add central office prefixes in an NPA to increase the number of available telephone numbers.^[1]

Overlay area codes		Location	Notes
Added	Base
557	314	St. Louis, Missouri (communities such as, but not limited to, St. Louis, Overland, Bridgeton, Florissant, Webster Groves, Creve Coeur, Kirkwood and Sappington)	Initial overlay area code plan was announced October 24, 2000. New 557 area code was announced in February 2022 and went into effect August 12, 2022. https://en.wikipedia.org/wiki/Area_codes_314_and_557
324	904	Jacksonville, Jacksonville Beach, Fernandina Beach, Orange Park and surrounding communities
220	740	Central and southeastern Ohio
223	717	South Central Pennsylvania
224	847	Northern suburbs of Chicago, Illinois
226, 382, 548	519	Southwestern Ontario
234	330	Akron-Canton and Warren-Youngstown areas in Ohio
236, 672, 778	604, 250	British Columbia
227, 240	301	Washington, D.C. suburbs and panhandle of Maryland
249	705	Northeastern and central Ontario
267, 445	215	Philadelphia, Pennsylvania area and a small portion of its Pennsylvania suburbs
272	570	Northeastern Pennsylvania, including the cities of Scranton, Wilkes-Barre, and Williamsport
279	916	Sacramento, California and surrounding suburbs
281, 346, 621, 832	713	Greater Houston, Texas
289, 365	905	Golden Horseshoe region of Ontario, including suburban Toronto, Hamilton, Oshawa, and the Niagara Peninsula in Ontario
321	407	Central Florida	In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America
323	213	Central Los Angeles, incl. Downtown L.A. and Hollywood
326	937	Southwest Ohio
331	630	Western suburbs of Chicago
332, 646 , 917	212	New York City borough of Manhattan, except for the Marble Hill neighborhood, which is physically connected to The Bronx and uses 718
339	781	Suburban Boston, Massachusetts and most of the South Shore region
341	510	San Francisco East Bay
343	613	Ottawa and eastern Ontario
347, 929	718	New York City boroughs of The Bronx, Brooklyn, Queens, and Staten Island, as well as Marble Hill, a Manhattan neighborhood directly connected to The Bronx[2]
351	978	North-central and most of northeastern Massachusetts
364	270	Western half of Kentucky, including the Purchase area, the Western Coal Fields, and most of the Pennyrile[3]
367, 581	418	Eastern Quebec
368, 587, 825	780, 403	Alberta
380	614	Columbus, Ohio, and suburbs
385	801	Along the Wasatch Front of Utah, including Salt Lake City, Provo–Orem, and Ogden
424	310	Southwestern Los Angeles County, California
430	903	Northeastern Texas
431	204	Manitoba
437, 647	416	Toronto, Ontario
438	514	Island of Montreal, Quebec
442	760	Southeastern California
443, 667	410	Baltimore metropolitan area and the Eastern Shore of Maryland
447	217	Central Illinois
448	850	Florida Panhandle, including Tallahassee and Pensacola
458	541	Most of Oregon, excluding its northwestern part
464	708	Near western suburbs and southern suburbs of Chicago
469, 972	214	Eastern portion of the Dallas–Fort Worth metroplex in and around Dallas, Texas
470, 678	404, 770	Atlanta metropolitan area, Georgia
474	306	Saskatchewan
475	203	Southwestern Connecticut
484	610	Eastern and parts of southeastern Pennsylvania
531	402	Eastern Nebraska
534	715	Northern Wisconsin
539	918	Northeastern Oklahoma
551	201	Northeastern New Jersey
564	360	Western Washington	564 initially overlays only 360, but will expand to overlay 206, 253, and 425 as those area codes run out of numbers[4]
567	419	Northwestern Ohio, including Toledo and Lima
571	703	Northern Virginia
572	405	Central Oklahoma, including greater Oklahoma City
582	814	Central and western Pennsylvania, including Altoona, DuBois, and Erie
587	403, 780	Alberta
628	415	San Francisco, Marin County and small portions of San Mateo County
629	615	Nashville, Tennessee
639	306	Saskatchewan
640	609	Central and southeast New Jersey
657	714	Northern Orange County, California
658	876	Jamaica
659	205	Western and central Alabama
669	408	Southern Bay Area in California, encompassing much of Santa Clara County and Silicon Valley[5]
672	604, 250	British Columbia
680	315	An area of Upstate New York including parts of Central New York and the North Country, with Syracuse as the main city in the region
681	304	West Virginia
682	817	Western part of the Dallas–Fort Worth metroplex, in and around Fort Worth, Texas
689	407	Orlando, Florida
720, 983	303	Denver metropolitan area, Colorado
725	702	Clark County, Nevada
726	210	San Antonio, Texas
737	512	Austin, Texas
743	336	Piedmont Triad, North Carolina including Greensboro, Winston-Salem, and western areas of the Raleigh-Durham metropolitan area.
747	818	San Fernando Valley, California
754	954	Broward County, Florida
769	601	Central Mississippi
771	202	Washington, D.C.
774	508	South-central and most of southeastern Massachusetts, including Cape Cod and the Islands
778	604, 250	British Columbia
779	815	Northern and north-central Illinois, including the Rockford, Freeport, and Kankakee areas
782	902	Nova Scotia and Prince Edward Island on 30 November 2014
786, 645	305	Miami-Dade County, Florida and the Florida Keys
801	385	Salt Lake City
820	805	Ventura, Santa Barbara and San Luis Obispo Counties in California
825	403, 780	Alberta
829, 849	809	Dominican Republic
839	803	Central South Carolina
840	909	Pomona Valley and western San Bernardino County, CA
848	732	Central New Jersey
857	617	Boston, Cambridge and Quincy, Massachusetts
858	619	San Diego, CA and surrounding area
862	973	Northern New Jersey
872	312, 773	Chicago, Illinois
873	819	Gatineau and western Quebec
878	412, 724	Metro Pittsburgh, Pennsylvania
917	212, 332, 347, 646, 718,  929	The entirety of New York City (The Bronx, Brooklyn, Manhattan, Queens, and Staten Island)	Originally primarily for cellular phones and pagers[2]
930	812	Southern Indiana
934	631	Suffolk County, New York
938	256	Northern Alabama
939	787	Puerto Rico
469, 972, 945	214	Eastern greater Dallas-Fort Worth, TX
947	248	Oakland County, Michigan
959	860	Northern and western Connecticut
971	503	Northwestern Oregon, including the Portland, Salem, and Astoria metropolitan areas
980	704	Charlotte metropolitan area, North Carolina
984	919	Raleigh-Durham, North Carolina metropolitan area
986	208	Idaho

See also

• List of North American Numbering Plan area codes
• List of future North American area codes
• Original North American area codes
• Telephone numbers in the Americas