| 201 | New Jersey (Union City, Teaneck, New Milford, Jersey City, Hoboken, Bayonne, Hackensack, Ridgewood, and northeast New Jersey, overlays with 551) |
| 202 | District of Columbia (all) |
| 203 | Connecticut (Bridgeport, New Haven, Waterbury and southwestern Connecticut; proposed overlay with 475) |
| 204 | Manitoba, Canada (all) |
| 205 | Alabama (Originally the code for the entire state, it still covers the largest city, Birmingham; Tuscaloosa; western and central Alabama) |
| 206 | Washington (All of Bainbridge, Mercer, and Vashon islands, and the cities of Burien, Des Moines, Lake Forest Park, Normandy Park, Seattle, Sea-Tac, Shoreline, and Tukwila and some small unincorporated areas adjacent to these cities, also, parts of the cities of Woodway and Edmonds) |
| 207 | Maine (all) |
| 208 | Idaho (all) |
| 209 | California (Stockton, Merced, Modesto, Tracy, San Andreas and central California) |
| 210 | Texas (San Antonio area) |
| 211 | Coin Telephone Refunds, Community local info in some cities |
| 212 | New York (New York City: Manhattan only; overlays with 646 and 917) |
| 213 | California (Downtown Los Angeles area only) |
| 214 | Texas (Dallas area, overlays with 469 and 972) |
| 215 | Pennsylvania (Philadelphia area, overlays with 267) 445 was proposed but never implemented. |
| 216 | Ohio (Cleveland area) |
| 217 | Illinois (Champaign, Decatur, Urbana, Springfield and central Illinois) |
| 218 | Minnesota (Duluth, Thief River Falls, Brainerd, International Falls and northern Minnesota) |
| 219 | Indiana Northwestern (Chesterton, Crown Point, Gary, Hammond, Hobart, Merrillville, Michigan City, Portage, Valparaiso) |
| 224 | Illinois (Waukegan, Des Plaines, northwest Chicago suburbs and northeastern Illinois, overlays with 847) |
| 225 | Louisiana (Baton Rouge, New Roads, White Castle and central eastern Louisiana) |
| 226 | Ontario (London, Windsor, Kitchener-Waterloo and part of southwestern Ontario; overlays with 519 in October 2006) |
| 227 | Maryland (This code is scheduled to provide numbering relief to area code 240 but no date has been assigned for this to go into effect.) |
| 228 | Mississippi (Gulfport, Pascagoula, Biloxi, Bay St Louis and southern Mississippi gulf coast) |
| 229 | Georgia (Albany, Valdosta, Bainbridge, Americus, Fitzgerald and southwestern Georgia). Split from 912 |
| 231 | Michigan (Traverse City, Ludington, Muskegon, Petoskey and northwestern Michigan) |
| 234 | Ohio (Youngstown, Warren, Akron, Canton and northeastern Ohio, overlays with 330) |
| 239 | Florida (southwest coast: all of Lee County, Collier County, mainland Monroe County excluding Florida Keys; includes Cape Coral, Fort Myers, Naples, Everglades) |
| 240 | Maryland (Hagerstown, Rockville, Cumberland and western Maryland, overlays with 301) |
| 242 | The Bahamas, split from 809. (all) |
| 246 | Barbados, split from 809. (all) |
| 248 | Michigan (Troy, Oakland County, Pontiac, Southfield, Rochester Hills and northwestern Detroit suburbs, overlays with 947) |
| 250 | British Columbia (except Vancouver area). Will overlay with area code 778 in 2008 (see 604) |
| 251 | Alabama (Mobile, Jackson, Brewton and southwestern Alabama) |
| 252 | North Carolina (Greenville, Kitty Hawk, Rocky Mount and northeastern North Carolina) |
| 253 | Washington (Lakewood, Tacoma, Auburn, Puyallup, Enumclaw, Spanaway and south Seattle suburbs) |
| 254 | Texas (Waco, Killeen, Belton, and Stephenville) |
| 256 | Alabama (Huntsville, Decatur, Cullman, Gadsden, Florence, Anniston and northern and eastern Alabama) |
| 260 | Indiana (Fort Wayne, Decatur, Angola, Wabash and northeastern Indiana) |
| 262 | Wisconsin (Menomonee Falls, Waukesha, Racine, Kenosha and southeastern Wisconsin excluding Milwaukee County) |
| 264 | Anguilla, split from 809. (all) |
| 267 | Pennsylvania (Philadelphia area, overlays with 215) 445 was purposed but never implemented. |
| 268 | Antigua and Barbuda, split from 809. (all) |
| 269 | Michigan (Battle Creek, Benton Harbor, Allegan, Hastings, Kalamazoo, St Joseph, and southwestern Michigan) |
| 270 | Kentucky (Elizabethtown, Paducah, Bowling Green, Hopkinsville, Owensboro, Henderson, and western Kentucky) |
| 276 | Virginia (Abingdon, Wytheville, Martinsville, Bluefield and southwestern Virginia) |
| 281 | Texas (Houston area, overlays with 713 and 832) |
| 283 | Ohio (Cincinnati, Middletown, Hamilton, Norwood, Lebanon and southwestern Ohio. Overlay of code 283 postponed. Currently 513.) |
| 284 | the British Virgin Islands, split from 809. (all) |
| 289 | Ontario (Niagara Peninsula, Hamilton, GTA suburbs and central southeastern Ontario, overlays with 905) |
