Area Code 631 is located in the state of New York.
The New York`s major city is Huntington
The state of New York is in Eastern timezone.
More important cities in New York:
Bay Shore, NY; Brentwood, NY; Centereach, NY; Central Islip, NY; Commack, NY; Copiague, NY; Coram, NY; Deer Park, NY; Dix Hills, NY; East Northport, NY; East Patchogue, NY; Hauppauge, NY; Holbrook, NY; Huntington Station, NY; Islip, NY; Lindenhurst, NY; Medford, NY; Ronkonkoma, NY; Selden, NY; Shirley, NY; Smithtown, NY; West Babylon, NY; West Islip, NY;
Prefixes within the 631 Area Code what we have in our database.
| Prefix | Primary City | County | Usage |
| (631) 563 | Sayville, NY | Suffolk | Landline |
| (631) 564 | Sayville, NY | Suffolk | Landline |
| (631) 565 | Amityville, NY | Not filled | Unknown |
| (631) 566 | Riverhead, NY | Suffolk | Landline |
| (631) 567 | Sayville, NY | Suffolk | Landline |
| (631) 568 | Not filled | Not filled | Unknown |
| (631) 569 | Patchogue, NY | Not filled | Unknown |
| (631) 570 | East Islip, NY | Suffolk | Landline |
| (631) 572 | Babylon, NY | Not filled | Unknown |
| (631) 574 | Riverhead, NY | Suffolk | Landline |
| (631) 575 | Brentwood, NY | Not filled | Unknown |
| (631) 576 | Patchogue, NY | Suffolk | Landline |
| (631) 577 | Farmingdale, NY | Nassau | Landline |
| (631) 578 | Yaphank, NY | Not filled | Unknown |
| (631) 579 | Brentwood, NY | Not filled | Unknown |
| (631) 580 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 581 | Islip, NY | Suffolk | Landline |
| (631) 582 | Central Islip, NY | Suffolk | Landline |
| (631) 583 | East Islip, NY | Suffolk | Landline |
| (631) 584 | St James, NY | Suffolk | Landline |
| (631) 585 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 586 | Deer Park, NY | Suffolk | Landline |
| (631) 587 | Babylon, NY | Suffolk | Landline |
| (631) 588 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 589 | Sayville, NY | Suffolk | Landline |
| (631) 590 | Brentwood, NY | Suffolk | Landline |
| (631) 591 | Riverhead, NY | Suffolk | Landline |
| (631) 592 | Lindenhurst, NY | Suffolk | Landline |
| (631) 593 | Greenport, NY | Suffolk | Landline |
| (631) 594 | Hampton Bays, NY | Suffolk | Landline |
| (631) 595 | Deer Park, NY | Suffolk | Landline |
| (631) 596 | Westhampton Beach, NY | Suffolk | Landline |
| (631) 597 | East Islip, NY | Suffolk | Landline |
| (631) 598 | Amityville, NY | Suffolk | Landline |
| (631) 599 | Riverhead, NY | Not filled | Unknown |
| (631) 602 | Greenport, NY | Not filled | Unknown |
| (631) 603 | Riverhead, NY | Suffolk | Landline |
| (631) 604 | E Hampton, NY | Suffolk | Landline |
| (631) 605 | Patchogue, NY | Not filled | Unknown |
| (631) 606 | Hicksville, NY | Not filled | Unknown |
| (631) 608 | Amityville, NY | Suffolk | Landline |
| (631) 609 | Brentwood, NY | Not filled | Unknown |
| (631) 610 | Eastport, NY | Suffolk | Landline |
| (631) 612 | Babylon, NY | Suffolk | Landline |
| (631) 613 | Water Mill, NY | Suffolk | Landline |
| (631) 614 | Southampton, NY | Suffolk | Landline |
| (631) 615 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 616 | Peconic, NY | Suffolk | Landline |
| (631) 617 | Brentwood, NY | Not filled | Unknown |
| (631) 618 | Yaphank, NY | Suffolk | Landline |
| (631) 619 | Huntington, NY | Suffolk | Landline |
| (631) 620 | Not filled | Not filled | Unknown |
| (631) 621 | St James, NY | Suffolk | Landline |
| (631) 622 | Farmingdale, NY | Nassau | Landline |
| (631) 623 | Commack, NY | Suffolk | Landline |
| (631) 624 | Brentwood, NY | Not filled | Unknown |
| (631) 625 | Orient, NY | Not filled | Unknown |
| (631) 626 | Brentwood, NY | Not filled | Unknown |
| (631) 627 | Patchogue, NY | Suffolk | Landline |
| (631) 628 | Northport, NY | Suffolk | Landline |
| (631) 629 | Huntington, NY | Not filled | Unknown |
| (631) 630 | Central Islip, NY | Suffolk | Landline |
| (631) 632 | East Setauket, NY | Suffolk | Landline |
| (631) 633 | Not filled | Suffolk | Cell Number |
| (631) 634 | Babylon, NY | Suffolk | Cell Number |
| (631) 638 | Stony Brook, NY | Suffolk | Landline |
| (631) 639 | Brentwood, NY | Not filled | Unknown |
| (631) 642 | Port Jefferson, NY | Suffolk | Landline |
| (631) 643 | Deer Park, NY | Suffolk | Landline |
| (631) 645 | Brentwood, NY | Suffolk | Cell Number |
| (631) 647 | Bay Shore, NY | Suffolk | Landline |
| (631) 648 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 649 | Babylon, NY | Suffolk | Landline |
| (631) 650 | Islip, NY | Suffolk | Landline |
| (631) 651 | Northport, NY | Suffolk | Landline |
| (631) 653 | Westhampton Beach, NY | Suffolk | Landline |
| (631) 654 | Patchogue, NY | Suffolk | Landline |
| (631) 655 | Riverhead, NY | Suffolk | Landline |
| (631) 656 | Smithtown, NY | Suffolk | Landline |
| (631) 657 | Moriches, NY | Suffolk | Landline |
| (631) 659 | Cold Spring Harbor, NY | Suffolk | Landline |
| (631) 660 | Riverhead, NY | Suffolk | Landline |
| (631) 661 | Babylon, NY | Suffolk | Landline |
| (631) 662 | Huntington, NY | Suffolk | Cell Number |
| (631) 663 | Kings Park, NY | Suffolk | Landline |
| (631) 664 | Central Islip, NY | Suffolk | Cell Number |
| (631) 665 | Brightwaters, NY | Suffolk | Landline |
| (631) 666 | Brightwaters, NY | Suffolk | Landline |
| (631) 667 | Deer Park, NY | Suffolk | Landline |
| (631) 668 | Montauk, NY | Suffolk | Landline |
| (631) 669 | Babylon, NY | Suffolk | Landline |
| (631) 670 | Commack, NY | Suffolk | Landline |
| (631) 671 | Lindenhurst, NY | Suffolk | Cell Number |
| (631) 672 | Smithtown, NY | Suffolk | Cell Number |
| (631) 673 | Huntington, NY | Suffolk | Landline |
| (631) 674 | Wyandanch, NY | Suffolk | Landline |
| (631) 675 | Stony Brook, NY | Suffolk | Landline |
| (631) 676 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 677 | Sayville, NY | Suffolk | Landline |
| (631) 678 | Brentwood, NY | Suffolk | Landline |
We have 673 Prefixes in our database.