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) 438 | Not filled | Not filled | Unknown |
| (631) 439 | Central Islip, NY | Suffolk | Landline |
| (631) 440 | East Islip, NY | Suffolk | Landline |
| (631) 441 | Brentwood, NY | Suffolk | Cell Number |
| (631) 442 | Brentwood, NY | Suffolk | Cell Number |
| (631) 443 | Eastport, NY | Suffolk | Landline |
| (631) 444 | East Setauket, NY | Suffolk | Landline |
| (631) 445 | Brentwood, NY | Suffolk | Cell Number |
| (631) 446 | Islip, NY | Not filled | Unknown |
| (631) 447 | Patchogue, NY | Suffolk | Landline |
| (631) 451 | Selden, NY | Suffolk | Landline |
| (631) 452 | Babylon, NY | Suffolk | Cell Number |
| (631) 453 | Selden, NY | Suffolk | Cell Number |
| (631) 454 | Farmingdale, NY | Nassau | Landline |
| (631) 455 | Deer Park, NY | Suffolk | Cell Number |
| (631) 456 | Brentwood, NY | Suffolk | Cell Number |
| (631) 457 | Huntington, NY | Suffolk | Landline |
| (631) 458 | Sag Harbor, NY | Suffolk | Landline |
| (631) 460 | Kings Park, NY | Suffolk | Landline |
| (631) 462 | Commack, NY | Suffolk | Landline |
| (631) 463 | Central Islip, NY | Suffolk | Cell Number |
| (631) 464 | Not filled | Not filled | Unknown |
| (631) 465 | Farmingdale, NY | Nassau | Landline |
| (631) 466 | Riverhead, NY | Suffolk | Landline |
| (631) 467 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 468 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 469 | Ronkonkoma, NY | Suffolk | Cell Number |
| (631) 470 | Huntington, NY | Suffolk | Landline |
| (631) 471 | Patchogue, NY | Suffolk | Landline |
| (631) 472 | Sayville, NY | Suffolk | Landline |
| (631) 473 | Port Jefferson, NY | Suffolk | Landline |
| (631) 474 | Port Jefferson, NY | Suffolk | Landline |
| (631) 475 | Patchogue, NY | Suffolk | Landline |
| (631) 476 | Port Jefferson, NY | Suffolk | Landline |
| (631) 477 | Greenport, NY | Suffolk | Landline |
| (631) 478 | Brentwood, NY | Suffolk | Landline |
| (631) 479 | Huntington, NY | Suffolk | Landline |
| (631) 481 | Islip, NY | Suffolk | Landline |
| (631) 482 | Babylon, NY | Not filled | Unknown |
| (631) 484 | Brentwood, NY | Suffolk | Cell Number |
| (631) 485 | Wyandanch, NY | Suffolk | Landline |
| (631) 486 | Commack, NY | Suffolk | Landline |
| (631) 487 | Brentwood, NY | Not filled | Unknown |
| (631) 488 | Southampton, NY | Not filled | Unknown |
| (631) 489 | Commack, NY | Suffolk | Landline |
| (631) 491 | Deer Park, NY | Suffolk | Landline |
| (631) 492 | Deer Park, NY | Suffolk | Landline |
| (631) 493 | Commack, NY | Suffolk | Landline |
| (631) 494 | Riverhead, NY | Not filled | Unknown |
| (631) 495 | Brentwood, NY | Suffolk | Cell Number |
| (631) 497 | Yaphank, NY | Suffolk | Cell Number |
| (631) 498 | Cold Spring Harbor, NY | Suffolk | Landline |
| (631) 499 | Commack, NY | Suffolk | Landline |
| (631) 501 | Farmingdale, NY | Nassau | Landline |
| (631) 503 | Ctr Moriches, NY | Suffolk | Landline |
| (631) 504 | Yaphank, NY | Not filled | Unknown |
| (631) 505 | Lindenhurst, NY | Not filled | Unknown |
| (631) 506 | Riverhead, NY | Suffolk | Landline |
| (631) 508 | Not filled | Not filled | Unknown |
| (631) 509 | Port Jefferson, NY | Not filled | Unknown |
| (631) 510 | Wyandanch, NY | Suffolk | Landline |
| (631) 512 | Selden, NY | Not filled | Unknown |
| (631) 513 | Brentwood, NY | Suffolk | Landline |
| (631) 514 | Brentwood, NY | Suffolk | Landline |
| (631) 517 | Babylon, NY | Suffolk | Landline |
| (631) 520 | Amityville, NY | Suffolk | Landline |
| (631) 521 | Brentwood, NY | Suffolk | Landline |
| (631) 522 | Deer Park, NY | Not filled | Unknown |
| (631) 523 | Central Islip, NY | Suffolk | Cell Number |
| (631) 525 | Brentwood, NY | Suffolk | Landline |
| (631) 527 | Not filled | Not filled | Unknown |
| (631) 528 | Kings Park, NY | Suffolk | Landline |
| (631) 529 | Not filled | Not filled | Unknown |
| (631) 530 | Not filled | Suffolk | Landline |
| (631) 531 | Farmingdale, NY | Nassau | Landline |
| (631) 532 | Amityville, NY | Suffolk | Landline |
| (631) 533 | Central Islip, NY | Not filled | Unknown |
| (631) 534 | Cold Spring Harbor, NY | Suffolk | Landline |
| (631) 536 | Eastport, NY | Suffolk | Landline |
| (631) 537 | Sag Harbor, NY | Suffolk | Landline |
| (631) 539 | Babylon, NY | Suffolk | Landline |
| (631) 540 | Not filled | Not filled | Unknown |
| (631) 541 | Massapequa Park, NY | Nassau | Landline |
| (631) 543 | Commack, NY | Suffolk | Landline |
| (631) 544 | Kings Park, NY | Suffolk | Landline |
| (631) 546 | Huntington, NY | Suffolk | Landline |
| (631) 547 | Huntington, NY | Suffolk | Landline |
| (631) 548 | Riverhead, NY | Suffolk | Landline |
| (631) 549 | Huntington, NY | Suffolk | Landline |
| (631) 550 | Not filled | Suffolk | Landline |
| (631) 551 | St James, NY | Suffolk | Landline |
| (631) 552 | Not filled | Not filled | Unknown |
| (631) 553 | Brentwood, NY | Suffolk | Cell Number |
| (631) 554 | Brentwood, NY | Suffolk | Cell Number |
| (631) 556 | Brentwood, NY | Suffolk | Cell Number |
| (631) 557 | Not filled | Suffolk | Cell Number |
| (631) 558 | Riverhead, NY | Suffolk | Cell Number |
| (631) 559 | Brentwood, NY | Not filled | Unknown |
| (631) 560 | Brentwood, NY | Not filled | Unknown |
| (631) 561 | Selden, NY | Suffolk | Landline |
We have 673 Prefixes in our database.