| Area Code | State/ Province | Main City | Country | Overlay Complex | Time Zone |
|---|---|---|---|---|---|
| 601 | Mississippi | Jackson | USA | 601/769 | C |
| 602 | Arizona | Phoenix | USA | 480/602/623 | MST |
| 603 | New Hampshire | Manchester | USA | E | |
| 604 | British Columbia | Vancouver | Canada | 604/778/236/672 | P |
| 605 | South Dakota | Sioux Falls | USA | C,M | |
| 606 | Kentucky | Ashland | USA | E,C | |
| 607 | New York | Binghamton | USA | E | |
| 608 | Wisconsin | Madison | USA | 608/353 | C |
| 609 | New Jersey | Trenton | USA | 609/640 | E |
| 610 | Pennsylvania | Allentown | USA | 610/484/835 | E |
| 612 | Minnesota | Minneapolis | USA | C | |
| 613 | Ontario | Ottawa | Canada | 613/343/753 | E |
| 614 | Ohio | Columbus | USA | 614/380 | E |
| 615 | Tennessee | Nashville | USA | 615/629 | C |
| 616 | Michigan | Grand Rapids | USA | E | |
| 617 | Massachusetts | Boston | USA | 617/857 | E |
| 618 | Illinois | Belleville | USA | 618/730 | C |
| 619 | California | San Diego | USA | 619/858 | P |
| 620 | Kansas | Hutchinson | USA | C,M | |
| 623 | Arizona | Phoenix | USA | 480/602/623 | MST |
| 624 | New York | Buffalo | USA | 716/624 | E |
| 626 | California | Pasadena | USA | P | |
| 628 | California | San Francisco | USA | 415/628 | P |
| 629 | Tennessee | Nashville | USA | 615/629 | C |
| 630 | Illinois | Aurora | USA | 630/331 | C |
| 631 | New York | Brentwood | USA | 631/934 | E |
| 636 | Missouri | O'Fallon | USA | C | |
| 639 | Saskatchewan | Saskatoon | Canada | 306/639/474 | CST |
| 640 | New Jersey | Trenton | USA | 609/640 | E |
| 641 | Iowa | Mason City | USA | C | |
| 645 | Florida | Miami | USA | 305/786/645 | E |
| 646 | New York | NYC Manhattan | USA | 212/646/917/332 | E |
| 647 | Ontario | Toronto | Canada | 416/647/437 | E |
| 649 | Turks and Caicos | Honda Road | Turks and Caicos | E | |
| 650 | California | Daly City | USA | P | |
| 651 | Minnesota | St Paul | USA | C | |
| 656 | Florida | Tampa | USA | 813/656 | E |
| 657 | California | Anaheim | USA | 714/657 | P |
| 658 | Jamaica | Kingston | Jamaica | 876/658 | EST |
| 659 | Alabama | Birmingham | USA | 205/659 | C |
| 660 | Missouri | Sedalia | USA | C | |
| 661 | California | Bakersfield | USA | P | |
| 662 | Mississippi | Southaven | USA | C | |
| 664 | Montserrat | Look Out | Montserrat | AST | |
| 667 | Maryland | Baltimore | USA | 410/443/667 | E |
| 669 | California | San Jose | USA | 408/669 | P |
| 670 | Northern Mariana | Saipan | Northern Mariana | ChST | |
| 671 | Guam | Dededo | Guam | ChST | |
| 672 | British Columbia | Kelowna | Canada | 250/778/236/672, 604/778/236/672 | P |
| 678 | Georgia | Atlanta | USA | 404/678/470/943, 770/678/470/943 | E |
| 680 | New York | Syracuse | USA | 315/680 | E |
| 681 | West Virginia | Charleston | USA | 304/681 | E |
| 682 | Texas | Fort Worth | USA | 817/682 | C |
| 683 | Ontario | Sudbury | Canada | 705/249/683 | E |
| 684 | American Samoa | Tafuna | American Samoa | SST | |
| 686 | Virginia | Richmond | USA | 804/686 | E |
| 689 | Florida | Orlando | USA | 407/321/689 | E |