Telephone area code Abbreviations and Acronyms

1. 617
   Massachusetts
2. 617
   Massachusetts - Eastern
3. 618
   Illinois
4. 618
   Illinois - Southern
5. 627
   California
6. 628
   California
7. 630
   Puerto Rico
8. 630
   Illinois
9. 630
   Illinois - Chicago suburbs
10. 636
    Missouri
11. 641
    Iowa
12. 657
    California
13. 659
    Alabama
14. 659
    Saint Kitts and Nevis
15. 661
    California
16. 662
    Saint Lucia
17. 662
    Mississippi
18. 667
    Maryland
19. 671
    Guam
20. 678
    Georgia

Last updated: May 24, 2020 — Total entries: 745