| Area Code | State/ Province | Main City | Country | Overlay Complex | Time Zone |
|---|---|---|---|---|---|
| 401 | Rhode Island | Providence | USA | E | |
| 402 | Nebraska | Omaha | USA | 402/531 | C,M |
| 403 | Alberta | Calgary | Canada | 403/587/825/368 | M |
| 404 | Georgia | Atlanta | USA | 404/678/470/943 | E |
| 405 | Oklahoma | Oklahoma City | USA | 405/572 | C |
| 406 | Montana | Billings | USA | M | |
| 407 | Florida | Orlando | USA | 407/321/689 | E |
| 408 | California | San Jose | USA | 408/669 | P |
| 409 | Texas | Beaumont | USA | C | |
| 410 | Maryland | Baltimore | USA | 410/443/667 | E |
| 412 | Pennsylvania | Pittsburgh | USA | 412/878 | E |
| 413 | Massachusetts | Springfield | USA | E | |
| 414 | Wisconsin | Milwaukee | USA | C | |
| 415 | California | San Francisco | USA | 415/628 | P |
| 416 | Ontario | Toronto | Canada | 416/647/437 | E |
| 417 | Missouri | Springfield | USA | C | |
| 418 | Quebec | Quebec City | Canada | 418/581/367 | E |
| 419 | Ohio | Toledo | USA | 419/567 | E |
| 423 | Tennessee | Chattanooga | USA | E,C | |
| 424 | California | Torrance | USA | 310/424 | P |
| 425 | Washington | Bellevue | USA | P | |
| 428 | New Brunswick | Saint John | Canada | 506/428 | A |
| 430 | Texas | Tyler | USA | 903/430 | C |
| 431 | Manitoba | Winnipeg | Canada | 204/431/584 | C |
| 432 | Texas | Midland | USA | C | |
| 434 | Virginia | Lynchburg | USA | E | |
| 435 | Utah | St George | USA | M | |
| 436 | Ohio | Lorain | USA | 440/436 | E |
| 437 | Ontario | Toronto | Canada | 416/647/437 | E |
| 438 | Quebec | Montreal | Canada | 514/438/263 | E |
| 440 | Ohio | Lorain | USA | 440/436 | E |
| 441 | Bermuda | Pembroke | Bermuda | A | |
| 442 | California | Oceanside | USA | 760/442 | P |
| 443 | Maryland | Baltimore | USA | 410/443/667 | E |
| 445 | Pennsylvania | Philadelphia | USA | 215/267/445 | E |
| 447 | Illinois | Springfield | USA | 217/447 | C |
| 448 | Florida | Tallahassee | USA | 850/448 | E,C |
| 450 | Quebec | Laval | Canada | 450/579/354 | E |
| 458 | Oregon | Eugene | USA | 541/458 | M,P |
| 463 | Indiana | Indianapolis | USA | 317/463 | E |
| 464 | Illinois | Cicero | USA | 708/464 | C |
| 468 | Quebec | Gatineau | Canada | 819/873/468 | E |
| 469 | Texas | Dallas | USA | 214/972/469/945 | C |
| 470 | Georgia | Atlanta | USA | 404/678/470/943, 770/678/470/943 | E |
| 472 | North Carolina | Fayetteville | USA | 910/472 | E |
| 473 | Grenada | Saint George's | Grenada | AST | |
| 474 | Saskatchewan | Saskatoon | Canada | 306/639/474 | CST |
| 475 | Connecticut | Bridgeport | USA | 203/475 | E |
| 478 | Georgia | Macon | USA | E | |
| 479 | Arkansas | Fort Smith | USA | C | |
| 480 | Arizona | Phoenix | USA | 480/602/623 | MST |
| 484 | Pennsylvania | Allentown | USA | 610/484/835 | E |