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631 Area Code

Area code 631 is in New York (NY), USA and some of the main locations it covers are Brentwood, West Babylon, Coram, etc. (jump to city list below).

In service since November 01, 1999, area code 631 is the older Numbering Plan Area Code in overlay complex 631/934.

The current time for places served by area code 631 is 11:38:44 AM (Eastern Time Zone).

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631 phone number location

NPANXX Area served1 Date2
631-200 Bayport 12/8/2003
631-201 Amityville 2/8/2016
631-202 Ronkonkoma 2/9/2016
631-203 Central Islip N/A
631-204 Southampton N/A
631-205 Yaphank N/A
631-206 Bay Shore N/A
631-207 Patchogue N/A
631-208 Riverhead N/A
631-209 Shoreham N/A
631-210 Islip N/A
631-212 Commack 2/15/2016
631-213 Midland N/A
631-214 Deer Park 5/21/2015
631-215 Brentwood 4/22/2016
631-216 Stony Brook N/A
631-217 Stony Brook N/A
631-218 Sayville N/A
631-219 Brentwood 10/13/2003
631-220 Brentwood N/A
631-221 Nassau Zone 09 N/A
631-223 Huntington N/A
631-224 Islip N/A
631-225 Lindenhst N/A
631-226 Lindenhst N/A
631-227 Farmingdale N/A
631-228 Shoreham N/A
631-229 Amityville N/A
631-230 Montauk Point 9/6/2012
631-231 Brentwood N/A
631-232 Central Islip N/A
631-233 Brentwood N/A
631-234 Central Islip N/A
631-235 Brentwood 10/18/2002
631-236 Brentwood N/A
631-237 Bridgehampton 9/25/2001
631-238 Montauk Point 9/25/2001
631-239 Northport N/A
631-240 Smithtown 10/30/2001
631-241 Brentwood 6/5/2003
631-242 Deer Park N/A
631-243 Deer Park N/A
631-244 Sayville N/A
631-245 Brentwood 8/16/2005
631-246 Stony Brook N/A
631-247 Farmingdale N/A
631-248 East Hampton 9/6/2012
631-249 Farmingdale N/A
631-250 St James 4/9/2013
631-251 Sag Harbor N/A
631-252 Brentwood 2/4/2003
631-253 Midland N/A
631-254 Deer Park N/A
631-255 Riverhead 7/22/2002
631-256 Sayville N/A
631-257 Smithtown 5/30/2012
631-258 Brentwood 8/15/2002
631-259 Southampton N/A
631-260 Brentwood 8/28/2014
631-261 Northport N/A
631-262 Northport N/A
631-263 Smithtown N/A
631-264 Amityville N/A
631-265 Smithtown N/A
631-266 West Commack N/A
631-267 Amagansett N/A
631-268 Southampton 4/4/2013
631-269 Kings Park N/A
631-270 Farmingdale N/A
631-271 Huntington N/A
631-272 Central Islip N/A
631-273 Brentwood N/A
631-274 Deer Park N/A
631-275 Brentwood 7/10/2003
631-276 Hampton Bays 10/21/2002
631-277 Islip N/A
631-278 Brentwood 10/21/2003
631-279 Brentwood N/A
631-280 Brentwood N/A
631-281 Atlantic N/A
631-282 Yaphank N/A
631-283 Southampton N/A
631-284 Riverhead N/A
631-285 Ronkonkoma N/A
631-286 Bellport N/A
631-287 Southampton N/A
631-288 Westhampton N/A
631-289 Patchogue N/A
631-290 Babylon 7/29/2015
631-291 Brentwood 7/23/2003
631-292 Kings Park N/A
631-293 Farmingdale N/A
631-294 Yaphank 10/21/2002
631-295 Yaphank N/A
631-296 Bridgehampton 6/28/2013
631-297 Central Islip N/A
631-298 Mattituck N/A
631-299 Brentwood N/A

NPANXX Area served1 Date2
631-300 Brentwood N/A
631-301 Farmingdale 12/5/2016
631-302 East Fire Island N/A
631-303 Amityville 9/1/2017
631-304 Brentwood 10/13/2015
631-305 Brentwood 2/1/2016
631-306 Deer Park N/A
631-307 Patchogue 8/2/2013
631-308 Brentwood 1/8/2020
631-309 Amityville 4/13/2018
631-310 Patchogue 1/24/2017
631-312 Patchogue N/A
631-313 Islip 6/14/2018
631-314 Babylon N/A
631-315 Mattituck 12/16/2006
631-316 Brentwood 2/21/2007
631-317 Patchogue 12/4/2009
631-318 Amagansett 1/27/2010
631-319 Sayville 2/3/2006
631-320 Selden 8/21/2006
631-321 Babylon N/A
631-322 Brentwood N/A
631-323 Orient N/A
631-324 East Hampton N/A
631-325 Eastport N/A
631-326 Commack N/A
631-327 Huntington 8/27/2002
631-328 Bay Shore N/A
631-329 East Hampton N/A
631-330 Farmingdale 9/30/2011
631-331 Port Jefferson N/A
631-332 Brentwood 2/15/2002
631-333 Greenport 5/5/2009
631-334 Central Islip N/A
631-335 Brentwood 7/10/2003
631-336 Brentwood 6/1/2010
631-337 Sayville N/A
631-338 Brentwood 2/18/2004
631-339 Brentwood 2/12/2010
631-340 Babylon N/A
631-341 Yaphank N/A
631-342 Central Islip N/A
631-343 Commack 9/10/2003
631-344 Yaphank N/A
631-345 Yaphank N/A
631-346 Selden 8/19/2010
631-348 Central Islip N/A
631-349 Stony Brook 9/13/2002
631-350 Huntington N/A
631-351 Huntington N/A
631-352 Smithtown 8/20/2010
631-353 Southampton 8/26/2010
631-354 Mattituck N/A
631-355 Brentwood 8/21/2003
631-356 Brentwood 8/21/2003
631-357 Brentwood N/A
631-358 Babylon 9/10/2010
631-359 Wading River 9/6/2012
631-360 Smithtown N/A
631-361 Smithtown N/A
631-363 Bayport N/A
631-364 Stony Brook 11/8/2010
631-365 Brentwood 9/10/2003
631-366 Smithtown N/A
631-367 Cold Spring Harbor N/A
631-368 West Commack N/A
631-369 Riverhead N/A
631-370 Farmingdale N/A
631-371 Stony Brook 6/17/2002
631-372 Brentwood 12/18/2014
631-373 Brentwood N/A
631-374 Brentwood 11/14/2001
631-375 Riverhead 11/14/2001
631-376 Babylon N/A
631-377 Southampton 11/21/2006
631-378 Shoreham N/A
631-379 Brentwood 1/9/2002
631-380 Stony Brook N/A
631-381 Riverhead 6/7/2016
631-382 Smithtown N/A
631-383 Bay Shore 6/17/2002
631-384 Selden 5/14/2002
631-385 Huntington N/A
631-386 Farmingdale N/A
631-387 Commack N/A
631-388 Brentwood 10/25/2010
631-389 Ronkonkoma N/A
631-390 Farmingdale N/A
631-391 Farmingdale N/A
631-392 Deer Park 2/14/2006
631-393 Farmingdale N/A
631-394 Yaphank 10/26/2010
631-395 Atlantic N/A
631-396 Farmingdale N/A
631-397 Amityville 2/12/2010
631-398 Brentwood N/A
631-399 Atlantic N/A

NPANXX Area served1 Date2
631-400 Center Moriches N/A
631-401 Brentwood 1/13/2020
631-402 Brentwood 2/1/2012
631-403 Port Jefferson 8/23/2006
631-404 Brentwood N/A
631-405 Riverhead 2/22/2011
631-406 Smithtown N/A
631-407 Southold 3/21/2011
631-408 Amityville 2/6/2012
631-409 Nassau Zone 09 N/A
631-410 Commack N/A
631-412 Lindenhst N/A
631-413 Selden 2/8/2006
631-414 Farmingdale N/A
631-415 Central Islip N/A
631-416 Brentwood 7/11/2011
631-417 Babylon 10/10/2011
631-418 Huntington 5/3/2001
631-419 Bayport N/A
631-420 Farmingdale N/A
631-421 Huntington N/A
631-422 Babylon N/A
631-423 Huntington N/A
631-424 Huntington N/A
631-425 Huntington N/A
631-426 Babylon N/A
631-427 Huntington N/A
631-428 Ronkonkoma 4/4/2001
631-429 Lindenhst 9/6/2012
631-430 Greenport 4/3/2013
631-431 Central Islip N/A
631-432 Brentwood 8/2/2013
631-433 Brentwood 6/26/2002
631-434 Brentwood N/A
631-435 Brentwood N/A
631-436 Brentwood N/A
631-437 Fire Island 10/8/2013
631-438 Patchogue 5/3/2011
631-439 Central Islip N/A
631-440 Fire Island N/A
631-441 Brentwood N/A
631-442 Brentwood N/A
631-443 Eastport N/A
631-444 Stony Brook N/A
631-445 Brentwood 3/15/2001
631-446 Islip 6/7/2007
631-447 Patchogue N/A
631-448 Yaphank 8/10/2011
631-449 Brentwood 6/14/2013
631-450 Lindenhst 3/2/2012
631-451 Selden N/A
631-452 Central Islip 9/8/2015
631-453 Selden N/A
631-454 Farmingdale N/A
631-455 Deer Park N/A
631-456 Brentwood 2/9/2005
631-457 Brentwood N/A
631-458 Sag Harbor N/A
631-459 Brentwood 1/27/2012
631-460 Kings Park N/A
631-461 Riverhead 9/13/2011
631-462 West Commack N/A
631-463 Central Islip N/A
631-464 Amityville 6/9/2011
631-465 Farmingdale N/A
631-466 Riverhead N/A
631-467 Ronkonkoma N/A
631-468 Ronkonkoma N/A
631-469 Brentwood 4/24/2018
631-470 Huntington N/A
631-471 Ronkonkoma N/A
631-472 Bayport N/A
631-473 Port Jefferson N/A
631-474 Port Jefferson N/A
631-475 Patchogue N/A
631-476 Port Jefferson N/A
631-477 Greenport N/A
631-478 Brentwood N/A
631-479 Huntington N/A
631-480 Amityville 3/9/2012
631-481 Islip N/A
631-482 Babylon 3/29/2007
631-483 Montauk Point 2/3/2012
631-484 Brentwood 12/31/2001
631-485 Midland N/A
631-486 West Commack N/A
631-487 Brentwood 7/18/2006
631-488 Southampton 8/21/2007
631-489 West Commack N/A
631-490 Atlantic 3/16/2012
631-491 Midland N/A
631-492 Deer Park N/A
631-493 West Commack N/A
631-494 Riverhead 4/21/2009
631-495 Brentwood N/A
631-496 Selden 2/20/2012
631-497 Yaphank N/A
631-498 Cold Spring Harbor N/A
631-499 West Commack N/A

NPANXX Area served1 Date2
631-500 Water Mill N/A
631-501 Farmingdale N/A
631-502 Jamesport 3/16/2012
631-503 Center Moriches N/A
631-504 Yaphank 5/23/2006
631-505 Lindenhst 2/24/2010
631-506 Riverhead N/A
631-507 Amityville 6/27/2013
631-508 Riverhead 3/13/2018
631-509 Port Jefferson 8/21/2006
631-510 Midland N/A
631-512 Selden 2/8/2006
631-513 Brentwood N/A
631-514 Brentwood N/A
631-515 Shelter Island 10/31/2012
631-517 Babylon N/A
631-518 Bay Shore 4/3/2013
631-519 East Fire Island 4/3/2013
631-520 Amityville N/A
631-521 Brentwood N/A
631-522 Deer Park 4/2/2009
631-523 Central Islip N/A
631-524 Brentwood 7/18/2011
631-525 Brentwood 11/4/2003
631-526 Babylon 10/22/2012
631-527 East Hampton 6/3/2011
631-528 Kings Park N/A
631-529 Orient N/A
631-530 Amityville 11/24/2015
631-531 Farmingdale N/A
631-532 Amityville N/A
631-533 Central Islip 2/9/2009
631-534 Cold Spring Harbor N/A
631-535 Port Jefferson 9/6/2012
631-536 Eastport N/A
631-537 Bridgehampton N/A
631-538 Selden 8/2/2013
631-539 Babylon N/A
631-540 Mattituck 5/12/2020
631-541 Nassau Zone 09 N/A
631-542 Ronkonkoma 3/16/2012
631-543 Commack N/A
631-544 Kings Park N/A
631-545 Amityville 8/20/2012
631-546 Huntington N/A
631-547 Huntington N/A
631-548 Riverhead N/A
631-549 Huntington N/A
631-550 Yaphank 3/4/2020
631-551 St James N/A
631-552 Amityville 8/22/2013
631-553 Brentwood N/A
631-554 Brentwood N/A
631-556 Brentwood 11/15/2005
631-557 Amagansett 6/9/2014
631-558 Riverhead N/A
631-559 Brentwood 3/30/2006
631-560 Brentwood 9/19/2006
631-561 Selden N/A
631-562 Patchogue 10/6/2011
631-563 Sayville N/A
631-564 Sayville N/A
631-565 Amityville 5/19/2009
631-566 Riverhead 1/5/2006
631-567 Sayville N/A
631-568 Amityville 11/13/2013
631-569 Patchogue 5/19/2006
631-570 Fire Island N/A
631-571 Orient 4/3/2013
631-572 Babylon 5/27/2009
631-573 Sayville 10/6/2011
631-574 Riverhead N/A
631-575 Brentwood 9/30/2008
631-576 Patchogue N/A
631-577 Farmingdale N/A
631-578 Yaphank 4/26/2007
631-579 Brentwood 11/14/2008
631-580 Ronkonkoma N/A
631-581 Islip N/A
631-582 Central Islip N/A
631-583 Fire Island N/A
631-584 St James N/A
631-585 Ronkonkoma N/A
631-586 Deer Park N/A
631-587 Babylon N/A
631-588 Ronkonkoma N/A
631-589 Sayville N/A
631-590 Ronkonkoma N/A
631-591 Riverhead N/A
631-592 Lindenhst N/A
631-593 Greenport N/A
631-594 Hampton Bays 3/15/2001
631-595 Deer Park N/A
631-596 Quogue 1/13/2006
631-597 East Fire Island N/A
631-598 Amityville N/A
631-599 Riverhead N/A

NPANXX Area served1 Date2
631-600 West Commack N/A
631-601 Brentwood 11/29/2012
631-602 Shelter Island 2/3/2006
631-603 Riverhead N/A
631-604 East Hampton 1/11/2006
631-605 Patchogue 5/13/2009
631-606 Northport 4/17/2009
631-607 Wading River 9/6/2018
631-608 Amityville N/A
631-609 Brentwood 9/8/2008
631-610 Eastport N/A
631-612 Babylon N/A
631-613 Bridgehampton N/A
631-614 Southampton N/A
631-615 Ronkonkoma N/A
631-616 Peconic 1/13/2006
631-617 Brentwood 8/21/2006
631-618 Yaphank N/A
631-619 Ronkonkoma N/A
631-620 Babylon 6/22/2011
631-621 St James N/A
631-622 Farmingdale N/A
631-623 West Commack N/A
631-624 Brentwood 6/30/2008
631-625 Orient 2/3/2006
631-626 Brentwood 5/12/2008
631-627 Patchogue 11/3/2005
631-628 Northport N/A
631-629 Huntington 10/31/2007
631-630 Central Islip N/A
631-631 Fire Island 10/11/2022
631-632 Stony Brook N/A
631-633 Bellport 3/3/2014
631-634 Commack 10/9/2019
631-635 Babylon N/A
631-636 Brentwood 12/15/2014
631-637 Brentwood 4/28/2014
631-638 Stony Brook 10/5/2005
631-639 Brentwood N/A
631-640 Amityville 3/28/2017
631-641 Water Mill N/A
631-642 Port Jefferson N/A
631-643 Midland N/A
631-644 Riverhead 10/14/2014
631-645 Brentwood N/A
631-646 Sayville 5/28/2020
631-647 Bay Shore N/A
631-648 Ronkonkoma N/A
631-649 Babylon N/A
631-650 Islip N/A
631-651 Northport N/A
631-652 Smithtown 1/13/2014
631-653 Quogue N/A
631-654 Patchogue N/A
631-655 Riverhead N/A
631-656 Smithtown N/A
631-657 Atlantic N/A
631-658 East Hampton 7/11/2013
631-659 Cold Spring Harbor N/A
631-660 Riverhead N/A
631-661 Babylon N/A
631-662 Huntington 10/25/2002
631-663 Kings Park N/A
631-664 Central Islip N/A
631-665 Bay Shore N/A
631-666 Bay Shore N/A
631-667 Deer Park N/A
631-668 Montauk Point N/A
631-669 Babylon N/A
631-670 Commack N/A
631-671 Lindenhst 6/17/2002
631-672 Smithtown 6/17/2002
631-673 Huntington N/A
631-674 Midland N/A
631-675 Stony Brook N/A
631-676 Ronkonkoma 8/20/2004
631-677 Sayville N/A
631-678 Brentwood N/A
631-679 Nassau Zone 09 N/A
631-680 Riverhead 2/14/2001
631-681 Selden 11/8/2004
631-682 Selden 3/14/2002
631-683 Huntington N/A
631-684 Westhampton 6/23/2001
631-685 Hampton Bays N/A
631-686 St James N/A
631-687 Patchogue N/A
631-688 Farmingdale N/A
631-689 Stony Brook N/A
631-690 Patchogue 10/15/2018
631-691 Amityville N/A
631-692 Cold Spring Harbor N/A
631-693 Amityville N/A
631-694 Farmingdale N/A
631-695 Brentwood N/A
631-696 Selden N/A
631-697 Huntington 1/16/2002
631-698 Selden N/A
631-699 Sayville N/A
NPANXX Area served1 Date2
631-701 Eastport N/A
631-702 Southampton N/A
631-703 Amityville 8/8/2005
631-704 Brentwood 8/16/2005
631-705 Atlantic 2/16/2016
631-706 Stony Brook N/A
631-707 Brentwood 3/10/2005
631-708 Brentwood N/A
631-709 Water Mill 8/17/2004
631-710 Ronkonkoma 6/6/2018
631-712 Farmingdale N/A
631-713 Eastport N/A
631-714 Patchogue 10/11/2004
631-715 Central Islip N/A
631-716 Selden N/A
631-717 Bayport 4/29/2021
631-719 Farmingdale N/A
631-720 Brentwood 5/14/2020
631-721 Selden N/A
631-722 Jamesport N/A
631-723 Hampton Bays N/A
631-724 Smithtown N/A
631-725 Sag Harbor N/A
631-726 Water Mill N/A
631-727 Riverhead N/A
631-728 Hampton Bays N/A
631-729 Atlantic N/A
631-730 Patchogue N/A
631-731 Amagansett N/A
631-732 Selden N/A
631-733 Brentwood N/A
631-734 Peconic N/A
631-735 Peconic 4/3/2013
631-736 Selden N/A
631-737 Ronkonkoma N/A
631-738 Ronkonkoma N/A
631-739 Ronkonkoma N/A
631-740 Riverhead N/A
631-741 Brentwood 10/9/2002
631-742 Huntington 10/9/2002
631-743 Port Jefferson 7/11/2013
631-744 Shoreham N/A
631-745 Riverhead 2/21/2002
631-746 Amityville 9/30/2014
631-747 Brentwood 3/10/2005
631-748 Brentwood N/A
631-749 Shelter Island N/A
631-750 Sayville N/A
631-751 Stony Brook N/A
631-752 Farmingdale N/A
631-753 Farmingdale N/A
631-754 Northport N/A
631-755 Farmingdale N/A
631-756 Farmingdale N/A
631-757 Northport N/A
631-758 Patchogue N/A
631-759 Huntington N/A
631-760 Huntington N/A
631-761 Central Islip N/A
631-762 Stony Brook N/A
631-763 Cold Spring Harbor N/A
631-764 Selden 4/12/2001
631-765 Southold N/A
631-766 Brentwood 7/6/2001
631-767 Brentwood 4/9/2002
631-768 Farmingdale N/A
631-769 Shoreham N/A
631-770 Farmingdale N/A
631-771 East Hampton 10/13/2004
631-772 Atlantic N/A
631-773 Farmingdale N/A
631-774 Brentwood N/A
631-775 Yaphank N/A
631-776 Bellport N/A
631-777 Farmingdale N/A
631-778 Central Islip N/A
631-779 Jamesport N/A
631-780 Smithtown N/A
631-781 Nassau Zone 09 N/A
631-782 Deer Park N/A
631-783 Nassau Zone 09 N/A
631-784 Central Islip N/A
631-785 Nassau Zone 09 N/A
631-786 Brentwood 1/16/2001
631-787 Central Islip N/A
631-788 Fishers Is N/A
631-789 Amityville N/A
631-790 Patchogue 5/16/2001
631-791 Port Jefferson N/A
631-792 Babylon N/A
631-793 Brentwood 3/15/2002
631-794 Farmingdale N/A
631-795 Nassau Zone 09 N/A
631-796 Brentwood 4/12/2001
631-797 Nassau Zone 09 N/A
631-798 Nassau Zone 09 N/A
631-799 Nassau Zone 09 N/A
NPANXX Area served1 Date2
631-800 Southampton N/A
631-801 Eastport N/A
631-802 Port Jefferson N/A
631-803 Bellport N/A
631-804 Brentwood 5/4/2001
631-805 Amityville 5/16/2001
631-806 Brentwood 10/5/2001
631-807 Brentwood 4/18/2002
631-808 Sag Harbor N/A
631-809 Deer Park 7/12/2018
631-810 Lindenhst 12/16/2020
631-812 Huntington 5/9/2001
631-813 Brentwood 10/15/2004
631-814 Babylon 10/10/2022
631-815 Farmingdale N/A
631-816 Yaphank 9/19/2002
631-817 Fire Island N/A
631-818 Babylon 10/30/2018
631-819 Bay Shore 9/16/2019
631-820 Ronkonkoma N/A
631-821 Shoreham N/A
631-822 Central Islip N/A
631-823 Bayport N/A
631-824 Huntington N/A
631-825 Montauk Point 8/1/2014
631-826 Nassau Zone 09 N/A
631-827 Huntington 5/16/2002
631-828 Port Jefferson N/A
631-829 Amityville 9/8/2015
631-830 Riverhead N/A
631-831 Brentwood N/A
631-832 Bayport N/A
631-833 Riverhead 9/6/2002
631-834 Brentwood N/A
631-835 Brentwood 6/4/2001
631-836 Brentwood 6/14/2001
631-837 Northport N/A
631-838 Brentwood N/A
631-839 Brentwood 1/16/2001
631-840 Islip N/A
631-841 Amityville N/A
631-842 Amityville N/A
631-843 Farmingdale N/A
631-844 Farmingdale N/A
631-845 Farmingdale N/A
631-846 Selden 1/16/2001
631-847 Farmingdale N/A
631-848 Brentwood 6/24/2002
631-849 Shoreham N/A
631-850 West Commack N/A
631-851 Central Islip N/A
631-852 Riverhead N/A
631-853 Central Islip N/A
631-854 Brentwood N/A
631-855 Deer Park N/A
631-856 Hampton Bays N/A
631-857 Cold Spring Harbor N/A
631-858 West Commack N/A
631-859 Islip N/A
631-860 Deer Park N/A
631-861 Farmingdale N/A
631-862 St James N/A
631-863 Smithtown N/A
631-864 Commack N/A
631-865 Deer Park N/A
631-866 Bellport N/A
631-867 Lindenhst N/A
631-868 Bayport N/A
631-869 Bellport N/A
631-870 Central Islip N/A
631-871 Riverhead 3/15/2002
631-872 Brentwood 6/27/2001
631-873 Brentwood 10/14/2004
631-874 Center Moriches N/A
631-875 Riverhead 7/18/2001
631-876 Southold 8/17/2004
631-877 Brentwood 8/2/2001
631-878 Center Moriches N/A
631-879 Patchogue N/A
631-880 Selden 11/8/2004
631-881 Central Islip N/A
631-882 Central Islip 5/16/2001
631-883 Bayport N/A
631-884 Lindenhst N/A
631-885 Brentwood 10/27/2004
631-886 Wading River N/A
631-887 Hampton Bays 10/10/2001
631-888 Lindenhst N/A
631-889 Deer Park 4/15/2002
631-890 Patchogue N/A
631-891 Patchogue 5/24/2004
631-892 Bay Shore N/A
631-893 Babylon N/A
631-894 Bay Shore N/A
631-895 Quogue 9/24/2020
631-896 Northport 6/17/2002
631-897 Huntington 10/3/2001
631-898 Westhampton N/A
631-899 Sag Harbor N/A

NPANXX Area served1 Date2
631-900 West Commack N/A
631-901 Brentwood 4/4/2005
631-902 Riverhead 10/9/2002
631-903 Southampton 10/9/2002
631-904 Central Islip N/A
631-905 Riverhead N/A
631-906 Deer Park 9/13/2019
631-907 East Hampton N/A
631-908 Patchogue 3/9/2020
631-909 Center Moriches N/A
631-910 Wading River N/A
631-912 Northport N/A
631-913 Ronkonkoma N/A
631-915 Riverhead N/A
631-916 Shoreham 2/2/2021
631-918 Deer Park N/A
631-919 Sag Harbor N/A
631-920 Midland N/A
631-921 Brentwood 10/5/2001
631-922 Brentwood N/A
631-923 Huntington N/A
631-924 Yaphank N/A
631-925 Northport N/A
631-926 Brentwood 9/25/2002
631-927 Farmingdale N/A
631-928 Port Jefferson N/A
631-929 Wading River N/A
631-930 Central Islip N/A
631-931 East Hampton 6/3/2016
631-932 Deer Park 4/1/2005
631-933 Amityville 1/23/2015
631-935 Huntington N/A
631-937 Southold 7/16/2015
631-938 Port Jefferson 4/8/2005
631-939 Riverhead 4/24/2019
631-940 Deer Park N/A
631-941 Stony Brook N/A
631-942 Brentwood 8/22/2005
631-943 Babylon 5/16/2001
631-944 Huntington N/A
631-945 Greenport 1/27/2021
631-946 Selden 9/7/2005
631-947 Bellport N/A
631-948 Brentwood N/A
631-949 Bellport 5/16/2001
631-951 Brentwood N/A
631-952 Brentwood N/A
631-953 Riverhead N/A
631-954 Bay Shore N/A
631-955 Deer Park N/A
631-956 Lindenhst N/A
631-957 Lindenhst N/A
631-960 Islip N/A
631-961 Babylon N/A
631-962 Farmingdale N/A
631-963 Central Islip N/A
631-964 Deer Park N/A
631-965 Riverhead 9/19/2002
631-966 Brentwood 7/8/2020
631-967 Brentwood N/A
631-968 Bay Shore N/A
631-969 Bay Shore N/A
631-970 Mattituck 1/27/2021
631-971 West Commack N/A
631-972 Brentwood 9/15/2005
631-973 Kings Park N/A
631-974 Smithtown 4/4/2001
631-975 Center Moriches 2/15/2016
631-977 Patchogue 2/9/2016
631-978 Port Jefferson N/A
631-979 Smithtown N/A
631-980 Commack N/A
631-981 Ronkonkoma N/A
631-982 Smithtown N/A
631-983 Babylon N/A
631-984 Deer Park 3/26/2020
631-985 Riverhead 1/27/2021
631-986 Smithtown 1/27/2021
631-987 Brentwood N/A
631-988 Huntington 2/14/2001
631-989 Riverhead N/A
631-990 Bay Shore 9/30/2019
631-991 Lindenhst N/A
631-992 Deer Park 9/16/2013
631-993 Commack N/A
631-994 Brentwood 8/25/2014
631-995 Yaphank N/A
631-996 Quogue N/A
631-997 Selden 7/29/2014
631-998 Westhampton N/A
  1. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  2. Assignment date. N/A - mostly CO codes assigned before 2001.
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Cities in area code 631

City1 County Time2
Amagansett Suffolk E
Amityville Suffolk E
Aquebogue Suffolk E
Babylon Suffolk E
Bay Shore Suffolk E
Bayport Suffolk E
Bellport Suffolk E
Blue Point Suffolk E
Bohemia Suffolk E
Brentwood Suffolk E
Bridgehampton Suffolk E
Brightwaters Suffolk E
Brookhaven Suffolk E
Calverton Suffolk E
Center Moriches Suffolk E
Centereach Suffolk E
Centerport Suffolk E
Central Islip Suffolk E
Cold Spring Harbor Suffolk E
Commack Suffolk E
Copiague Suffolk E
Coram Suffolk E
Cutchogue Suffolk E
Deer Park Suffolk E
East Hampton Suffolk E
East Islip Suffolk E
East Marion Suffolk E
East Moriches Suffolk E
East Northport Suffolk E
East Quogue Suffolk E
East Setauket Suffolk E
Eastport Suffolk E
Farmingville Suffolk E
Fishers Island Suffolk E
Great River Suffolk E
Greenlawn Suffolk E
Greenport Suffolk E
Hampton Bays Suffolk E
Hauppauge Suffolk E
Holbrook Suffolk E
Holtsville Suffolk E
Huntington Suffolk E
Huntington Station Suffolk E
Islandia Suffolk E
Islip Suffolk E
Islip Terrace Suffolk E
Jamesport Suffolk E
Kings Park Suffolk E
Lake Grove Suffolk E
Laurel Suffolk E
Lindenhurst Suffolk E
Manorville Suffolk E
Mastic Suffolk E
Mastic Beach Suffolk E
Mattituck Suffolk E
Medford Suffolk E
Melville Suffolk E
Middle Island Suffolk E
Miller Place Suffolk E
Montauk Suffolk E
Moriches Suffolk E
Mount Sinai Suffolk E
Nesconset Suffolk E
New Suffolk Suffolk E
North Babylon Suffolk E
Northport Suffolk E
Oakdale Suffolk E
Ocean Beach Suffolk E
Orient Suffolk E
Patchogue Suffolk E
Peconic Suffolk E
Port Jefferson Suffolk E
Port Jefferson Station Suffolk E
Quogue Suffolk E
Remsenburg Suffolk E
Ridge Suffolk E
Riverhead Suffolk E
Rocky Point Suffolk E
Ronkonkoma Suffolk E
Sag Harbor Suffolk E
Sagaponack Suffolk E
Sayville Suffolk E
Selden Suffolk E
Shelter Island Suffolk E
Shelter Island Heights Suffolk E
Shirley Suffolk E
Shoreham Suffolk E
Smithtown Suffolk E
Sound Beach Suffolk E
South Jamesport Suffolk E
Southampton Suffolk E
Southold Suffolk E
Speonk Suffolk E
St James Suffolk E
Stony Brook Suffolk E
Upton Suffolk E
Wading River Suffolk E
Wainscott Suffolk E
Water Mill Suffolk E
West Babylon Suffolk E
West Islip Suffolk E
West Sayville Suffolk E
Westhampton Suffolk E
Westhampton Beach Suffolk E
Wyandanch Suffolk E
Yaphank Suffolk E
  1. Listed above are most places served by area code 631. When multiple places in a state/province share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. E stands for Eastern Time Zone (currently 11:38:44 AM).
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