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203 area code

Area code 203 is in Connecticut (CT), USA and some of the main locations covered are Bridgeport, New Haven, Stamford, .. (jump to city list below).

Area code 203 has been in service since January 01, 1947 and is the older Numbering Plan Area in overlay complex 203/475 (overlaying area codes cover the same geographic area).

09:42:03 PM is the current time in area code 203 (Eastern Time).

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Map of area code 203

More Connecticut area codes

NPANXX1 Area served2 Date3
203-200 New Haven 8/14/2008
203-201 New Haven
203-202 Darien
203-204 Guilford
203-205 Danbury
203-206 Waterbury
203-207 Danbury
203-208 Branford
203-209 Bridgeport
203-210 Wilton
203-212 Bridgeport 10/23/2008
203-213 Meriden
203-214 New Haven
203-215 New Haven
203-216 Westport
203-217 Waterbury
203-218 Bridgeport
203-219 Stamford
203-220 Trumbull
203-221 Westport
203-222 Westport
203-223 Stamford
203-224 Bridgeport
203-225 Huntington
203-226 Westport
203-227 Westport
203-228 Waterbury 10/4/2002
203-229 Norwalk
203-230 New Haven
203-231 Ansonia/Derby
203-232 Waterbury
203-233 Waterbury
203-234 New Haven
203-235 Meriden
203-236 Waterbury
203-237 Meriden
203-238 Meriden
203-239 New Haven
203-240 Danbury
203-241 Danbury
203-242 Huntington
203-243 Bridgeport
203-244 Ridgefield 3/28/2003
203-245 Madison
203-246 Norwalk
203-247 Norwalk
203-248 New Haven
203-249 Stamford
203-250 Cheshire
203-251 Stamford
203-252 Stamford
203-253 Stamford
203-254 Fairfield
203-255 Fairfield
203-256 Fairfield
203-257 Bridgeport
203-258 Bridgeport
203-259 Fairfield
203-260 Bridgeport
203-261 Trumbull
203-262 Woodbury
203-263 Woodbury
203-264 Woodbury
203-265 Wallingford
203-266 Woodbury
203-267 Woodbury
203-268 Trumbull
203-269 Wallingford
203-270 Newtown
203-271 Cheshire
203-272 Cheshire
203-273 Stamford 10/22/2002
203-274 Stamford
203-275 Bridgeport
203-276 Stamford 3/28/2003
203-277 Old Greenwich 4/16/2003
203-278 Ansonia/Derby 5/1/2001
203-279 Bridgeport
203-280 Darien 3/24/2004
203-281 New Haven
203-282 Stamford
203-283 Milford
203-284 Wallingford
203-285 New Haven
203-286 Norwalk
203-287 New Haven
203-288 New Haven
203-289 Danbury
203-290 Bridgeport 11/14/2013
203-291 Westport
203-292 Fairfield
203-293 Westport
203-294 Wallingford
203-295 Norwalk
203-296 Bridgeport
203-297 Danbury
203-298 New Haven
203-299 Norwalk
203-300 Danbury 10/25/2001
203-301 Milford
203-302 Greenwich
203-303 Wallingford
203-304 Newtown
203-305 Ansonia/Derby
203-306 Milford
203-307 Fairfield 1/31/2005
203-308 Ansonia/Derby 10/22/2008
203-309 Darien 9/11/2007
203-310 New Canaan 4/16/2003
203-312 Danbury
203-313 Danbury
203-314 New Haven
203-315 Branford
203-316 Stamford
203-317 Meriden
203-318 Madison
203-319 Fairfield
203-320 Darien 4/16/2003
203-321 Stamford
203-322 Stamford
203-323 Stamford
203-324 Stamford
203-325 Stamford
203-326 Stamford
203-327 Stamford
203-328 Stamford
203-329 Stamford
203-330 Bridgeport
203-331 Bridgeport
203-332 Bridgeport
203-333 Bridgeport
203-334 Bridgeport
203-335 Bridgeport
203-336 Bridgeport
203-337 Bridgeport
203-338 Bridgeport
203-339 Bridgeport
203-340 Greenwich 8/19/2003
203-341 Westport
203-342 Bridgeport
203-343 Ansonia/Derby 1/18/2012
203-344 Old Greenwich
203-345 Bridgeport
203-346 Waterbury
203-347 Byram 3/11/2004
203-348 Stamford
203-349 Westport
203-350 Madison
203-351 Stamford
203-352 Stamford
203-353 Stamford
203-354 Norwalk
203-355 Stamford
203-356 Stamford
203-357 Stamford
203-358 Stamford
203-359 Stamford
203-360 Bridgeport 12/10/2008
203-361 New Haven 12/16/2010
203-362 Bridgeport
203-363 Stamford
203-364 Newtown
203-365 Bridgeport
203-366 Bridgeport
203-367 Bridgeport
203-368 Bridgeport
203-369 Old Greenwich 10/7/2003
203-370 New Haven
203-371 Bridgeport
203-372 Bridgeport
203-373 Bridgeport
203-374 Bridgeport
203-375 Bridgeport
203-376 New Haven
203-377 Bridgeport
203-378 Bridgeport
203-379 Meriden
203-380 Bridgeport
203-381 Bridgeport
203-382 Bridgeport
203-383 Bridgeport
203-384 Bridgeport
203-385 Bridgeport
203-386 Bridgeport
203-387 New Haven
203-388 Stamford
203-389 New Haven
203-390 New Haven 11/10/2015
203-391 Stamford
203-392 New Haven
203-393 New Haven
203-394 Bridgeport
203-395 Bridgeport
203-396 Bridgeport
203-397 New Haven
203-398 Norwalk
203-399 Stamford
203-400 Trumbull 2/19/2002
203-401 New Haven
203-402 Huntington
203-403 Ridgefield
203-404 New Haven
203-405 Woodbury 4/4/2001
203-406 Stamford
203-407 New Haven
203-408 Redding
203-409 Old Greenwich
203-410 New Haven
203-412 New Haven
203-413 Greenwich
203-414 Bridgeport
203-415 New Haven 4/12/2001
203-416 Bridgeport
203-417 Danbury
203-418 Fairfield
203-419 Waterbury
203-420 Meriden
203-421 Madison
203-422 Greenwich
203-423 Wilton
203-424 Darien 6/29/2007
203-425 Stamford
203-426 Newtown
203-427 Meriden
203-428 Stamford
203-429 Westport
203-430 New Haven
203-431 Ridgefield
203-432 New Haven
203-433 Branford
203-434 Norwalk
203-435 New Haven
203-436 New Haven
203-437 Waterbury
203-438 Ridgefield
203-439 Cheshire
203-440 Meriden
203-441 Wolcott
203-442 New Canaan
203-443 Meriden
203-444 New Haven
203-445 Trumbull
203-446 Ansonia/Derby
203-447 Huntington
203-448 Danbury
203-449 Bridgeport
203-450 Bridgeport 5/12/2008
203-451 Westport
203-452 Trumbull
203-453 Guilford
203-454 Westport
203-455 Bridgeport
203-456 Danbury 12/6/2011
203-457 Guilford
203-458 Guilford
203-459 Trumbull
203-460 Danbury
203-461 Stamford
203-462 Stamford
203-463 Seymour
203-464 New Haven
203-465 Waterbury
203-466 New Haven
203-467 New Haven
203-468 New Haven
203-469 New Haven
203-470 Danbury
203-477 New Haven
203-479 New Haven
203-480 Fairfield
203-481 Branford
203-482 Danbury 3/23/2001
203-483 Branford
203-484 Branford
203-485 Greenwich
203-486 Woodbury
203-487 Stamford 1/3/2001
203-488 Branford
203-489 Greenwich 5/25/2011
203-490 Naugatuck
203-491 Newtown 2/12/2010
203-492 New Haven
203-493 Georgetown
203-494 New Haven
203-495 New Haven
203-496 Greenwich
203-497 New Haven
203-498 New Haven
203-499 New Haven
203-500 New Haven 10/25/2001
203-501 Danbury 7/9/2010
203-502 Bridgeport
203-503 New Haven
203-504 Stamford 2/12/2004
203-505 Norwalk
203-506 New Haven
203-507 New Haven
203-508 New Haven 2/3/2005
203-509 Waterbury
203-510 Waterbury
203-512 Danbury
203-513 Huntington
203-514 Meriden
203-515 Norwalk
203-516 Ansonia/Derby
203-517 Stamford
203-518 Waterbury 7/2/2001
203-519 Waterbury 2/9/2011
203-520 Bridgeport 5/30/2002
203-521 Bridgeport
203-522 Bridgeport
203-523 Norwalk
203-524 Stamford
203-525 Waterbury
203-526 Bridgeport
203-527 Waterbury
203-528 Waterbury
203-529 Wilton
203-530 New Haven
203-531 Byram
203-532 Byram
203-533 Guilford
203-534 Bridgeport
203-535 New Haven
203-536 Stamford
203-537 Meriden
203-538 Huntington
203-539 Stamford
203-540 Bridgeport 1/31/2005
203-541 Stamford
203-542 Greenwich
203-543 Bridgeport
203-544 Georgetown
203-545 Bridgeport
203-546 Danbury
203-547 Stamford
203-548 Stamford 5/30/2002
203-549 Bridgeport
203-550 Stamford
203-551 Bridgeport
203-552 Byram
203-553 New Haven
203-554 Stamford
203-556 Bridgeport
203-557 Westport
203-558 Waterbury
203-559 Darien
203-560 Waterbury
203-561 Stamford
203-562 New Haven
203-563 Wilton
203-564 Stamford
203-565 Waterbury
203-566 Stamford 2/4/2003
203-567 Huntington
203-568 Waterbury
203-569 Stamford
203-570 Stamford 3/26/2001
203-571 Westport
203-572 Bridgeport 7/13/2007
203-573 Waterbury
203-574 Waterbury
203-575 Waterbury
203-576 Bridgeport
203-577 Waterbury
203-578 Waterbury
203-579 Bridgeport
203-580 Byram 10/2/2012
203-581 Bridgeport
203-582 New Haven
203-583 Bridgeport
203-584 New Haven 7/9/2010
203-585 Stamford
203-586 Woodbury
203-587 Georgetown
203-588 Stamford
203-589 New Haven
203-590 Trumbull 3/18/2011
203-591 Waterbury
203-592 Waterbury
203-593 Norwalk
203-594 New Canaan
203-595 Stamford
203-596 Waterbury
203-597 Waterbury
203-598 Waterbury
203-599 Meriden
203-600 Meriden 10/3/2008
203-601 Trumbull
203-602 Stamford
203-603 New Haven
203-604 Norwalk 3/14/2001
203-605 New Haven
203-606 New Haven
203-607 Stamford 2/4/2003
203-608 Meriden
203-609 Stamford
203-610 Bridgeport
203-612 Bridgeport
203-613 Norwalk
203-614 Stamford
203-615 Bridgeport
203-616 Danbury
203-617 Danbury 9/5/2006
203-618 Greenwich
203-619 New Haven
203-620 Darien 7/19/2004
203-621 Darien
203-622 Greenwich
203-623 New Haven
203-624 New Haven
203-625 Greenwich
203-626 Wallingford
203-627 New Haven
203-628 Danbury
203-629 Greenwich
203-630 Meriden
203-631 Meriden
203-632 Naugatuck
203-633 Wolcott
203-634 Meriden
203-635 Westport
203-636 Darien 9/14/2004
203-637 Old Greenwich
203-638 Trumbull
203-639 Meriden
203-640 New Haven
203-641 New Haven
203-642 Norwalk
203-643 Branford
203-644 Norwalk
203-645 New Haven
203-646 Branford
203-647 Milford
203-648 Danbury
203-649 Cheshire
203-650 Bridgeport 3/26/2001
203-651 Cheshire
203-652 New Canaan
203-653 Stamford
203-654 New Haven
203-655 Darien
203-656 Darien
203-657 New Haven
203-658 Stamford
203-659 Fairfield
203-660 Byram 1/3/2001
203-661 Greenwich
203-662 Darien
203-663 Norwalk
203-664 Redding
203-665 Wilton
203-666 Bridgeport 9/26/2013
203-667 Stamford
203-668 New Haven
203-669 Darien
203-670 Fairfield 12/6/2021
203-671 New Haven
203-672 New Haven
203-673 Bridgeport
203-674 Stamford
203-675 New Haven
203-676 New Haven
203-677 Wallingford
203-678 Wallingford
203-679 Wallingford
203-680 New Haven 10/31/2012
203-681 Byram
203-682 Westport
203-683 Bridgeport
203-684 New Haven 10/3/2008
203-685 Bridgeport 3/30/2001
203-686 Meriden
203-687 New Haven
203-688 New Haven
203-689 Guilford
203-690 Bridgeport 3/21/2008
203-691 New Haven
203-692 Fairfield
203-693 Milford 7/13/2010
203-694 Meriden
203-695 Waterbury
203-696 Bridgeport
203-697 Wallingford
203-698 Old Greenwich
203-699 Cheshire
203-701 Milford
203-702 Danbury
203-703 Stamford
203-704 Wolcott 7/17/2002
203-705 Stamford
203-706 Waterbury 2/12/2004
203-707 Waterbury 3/10/2011
203-708 Stamford
203-709 Waterbury
203-710 New Haven
203-712 Huntington
203-713 Milford
203-714 Naugatuck
203-715 Meriden
203-716 New Canaan
203-717 Greenwich 1/28/2011
203-718 Cheshire
203-719 Stamford
203-720 Naugatuck
203-721 Waterbury
203-722 Norwalk
203-723 Naugatuck
203-724 Stamford
203-725 Waterbury
203-726 Bridgeport 9/8/2010
203-727 Bridgeport 6/5/2001
203-728 Stamford 11/22/2006
203-729 Naugatuck
203-730 Danbury
203-731 Danbury
203-732 Ansonia/Derby
203-733 Danbury
203-734 Ansonia/Derby
203-735 Ansonia/Derby
203-736 Ansonia/Derby
203-737 New Haven
203-738 Guilford
203-739 Danbury
203-740 Danbury
203-741 Wallingford
203-742 Greenwich 4/10/2003
203-743 Danbury
203-744 Danbury
203-745 New Haven
203-746 Danbury
203-747 New Haven
203-748 Danbury
203-749 Danbury
203-750 Norwalk
203-751 Ansonia/Derby
203-752 New Haven
203-753 Waterbury
203-754 Waterbury
203-755 Waterbury
203-756 Waterbury
203-757 Waterbury
203-758 Waterbury
203-759 Waterbury
203-760 Bridgeport 4/16/2012
203-761 Wilton
203-762 Wilton
203-763 Fairfield
203-764 New Haven
203-765 New Haven
203-766 New Haven
203-767 Bridgeport
203-768 Waterbury
203-769 Greenwich
203-770 Danbury
203-771 New Haven
203-772 New Haven
203-773 New Haven
203-774 Wallingford
203-775 Danbury
203-776 New Haven
203-777 New Haven
203-778 Danbury
203-779 Madison
203-780 New Haven 10/2/2012
203-781 New Haven
203-782 New Haven
203-783 Milford
203-784 New Haven
203-785 New Haven
203-786 New Haven
203-787 New Haven
203-788 Danbury
203-789 New Haven
203-790 Danbury
203-791 Danbury
203-792 Danbury
203-793 Wallingford 3/23/2001
203-794 Danbury
203-795 New Haven
203-796 Danbury
203-797 Danbury
203-798 Danbury
203-799 New Haven
203-800 New Haven 3/10/2011
203-801 New Canaan
203-802 Waterbury 10/3/2008
203-803 Norwalk
203-804 New Haven
203-805 Waterbury
203-806 Cheshire
203-807 Norwalk 1/30/2001
203-808 Waterbury 5/30/2002
203-809 New Haven 11/4/2002
203-810 Norwalk 7/27/2001
203-812 New Haven
203-813 Byram
203-814 Bridgeport
203-815 New Haven
203-816 Trumbull 3/14/2001
203-817 Stamford
203-818 Norwalk
203-819 Waterbury
203-820 Norwalk
203-821 New Haven
203-822 Norwalk
203-823 New Haven
203-824 New Haven
203-825 Danbury
203-826 Danbury
203-827 Old Greenwich 7/19/2004
203-828 Seymour
203-829 Norwalk
203-830 Danbury
203-831 Norwalk
203-832 Stamford 4/6/2006
203-833 New Haven 7/29/2015
203-834 Wilton
203-835 Norwalk
203-836 New Haven 12/6/2011
203-837 Danbury
203-838 Norwalk
203-839 Norwalk
203-840 Norwalk
203-841 Waterbury
203-842 Norwalk
203-843 New Haven
203-844 Fairfield 8/16/2004
203-845 Norwalk
203-846 Norwalk
203-847 Norwalk
203-848 New Haven
203-849 Norwalk
203-850 New Haven 10/3/2008
203-851 Norwalk
203-852 Norwalk
203-853 Norwalk
203-854 Norwalk
203-855 Norwalk
203-856 Norwalk
203-857 Norwalk
203-858 Norwalk
203-859 New Haven
203-861 Greenwich
203-862 Greenwich
203-863 Greenwich
203-864 Bridgeport 3/7/2011
203-865 New Haven
203-866 Norwalk
203-867 New Haven
203-868 New Haven
203-869 Greenwich
203-870 Bridgeport
203-871 Branford
203-872 Cheshire
203-873 Bridgeport 2/7/2007
203-874 Milford
203-875 Darien
203-876 Milford
203-877 Milford
203-878 Milford
203-879 Wolcott
203-880 Trumbull
203-881 Seymour
203-882 Milford
203-883 Stamford
203-884 Guilford
203-885 Danbury 10/30/2006
203-886 Meriden
203-887 New Haven
203-888 Seymour
203-889 New Haven
203-890 Stamford 7/27/2001
203-891 New Haven
203-892 Ansonia/Derby 11/8/2010
203-893 Ansonia/Derby 6/29/2007
203-894 Ridgefield
203-895 Trumbull
203-896 Madison
203-897 Stamford 8/20/2008
203-898 Darien 1/31/2005
203-899 Norwalk
203-900 Greenwich 2/24/2012
203-901 New Haven
203-902 New Haven
203-903 New Haven
203-904 Norwalk
203-905 Stamford
203-906 Ansonia/Derby 4/23/2002
203-907 New Haven
203-908 Bridgeport 4/5/2006
203-909 New Haven 5/13/2008
203-910 Waterbury
203-912 Stamford
203-913 Bridgeport
203-914 Stamford 2/24/2012
203-915 New Haven
203-916 Bridgeport 1/30/2001
203-917 Danbury 10/22/2008
203-918 Stamford
203-919 Norwalk
203-920 New Canaan 2/20/2004
203-921 Stamford
203-922 Huntington
203-923 Bridgeport
203-924 Huntington
203-925 Huntington
203-926 Huntington
203-927 New Haven
203-928 New Haven
203-929 Huntington
203-930 Greenwich 3/14/2001
203-931 New Haven
203-932 New Haven
203-933 New Haven
203-934 New Haven
203-935 Meriden
203-936 New Haven 9/12/2008
203-937 New Haven
203-938 Redding
203-939 Norwalk 6/25/2008
203-940 Stamford
203-941 Seymour 9/21/2010
203-942 Danbury
203-943 Norwalk
203-944 Huntington
203-945 Norwalk
203-946 New Haven
203-947 Danbury
203-948 Danbury
203-949 Wallingford
203-951 Milford
203-952 Norwalk
203-953 Bridgeport 7/27/2001
203-954 Ansonia/Derby
203-955 Fairfield 2/20/2004
203-956 Norwalk 1/30/2001
203-957 Norwalk 5/25/2011
203-960 Stamford 9/15/2008
203-961 Stamford
203-962 Stamford
203-963 Norwalk
203-964 Stamford
203-965 Stamford
203-966 New Canaan
203-967 Stamford
203-968 Stamford
203-969 Stamford
203-970 Norwalk 4/4/2011
203-971 Greenwich
203-972 New Canaan
203-973 Stamford
203-974 New Haven
203-975 Stamford
203-977 Stamford
203-978 Stamford
203-979 Stamford
203-980 New Haven 8/20/2002
203-981 Norwalk
203-982 Waterbury
203-983 Greenwich
203-984 Norwalk
203-985 New Haven
203-986 Old Greenwich 2/20/2004
203-987 Greenwich 3/30/2001
203-988 New Haven
203-989 Stamford
203-990 Old Greenwich 1/31/2005
203-991 Norwalk
203-992 Greenwich 5/12/2006
203-993 Bridgeport 7/20/2006
203-994 Danbury 12/14/2001
203-995 Bridgeport 10/8/2008
203-996 New Haven 12/14/2001
203-997 Ansonia/Derby 5/18/2011
203-998 Stamford 10/15/2004
203-999 New Haven 3/9/2011
  1. The NPA is the Numbering Plan Area (area code) and NXX is the central office code.
  2. 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.
  3. The assignment date. If no date is shown the exchange code was assigned before 2001.

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List of cities in area code 203

City4 County Time5
Ansonia New Haven E
Beacon Falls New Haven E
Bethany New Haven E
Bethel Fairfield E
Bethlehem Litchfield E
Botsford Fairfield E
Branford New Haven E
Bridgeport Fairfield E
Brookfield Fairfield E
Cheshire New Haven E
Cos Cob Fairfield E
Danbury Fairfield E
Darien Fairfield E
Derby New Haven E
East Haven New Haven E
Easton Fairfield E
Fairfield Fairfield E
Georgetown Fairfield E
Greens Farms Fairfield E
Greenwich Fairfield E
Guilford New Haven E
Hamden New Haven E
Hawleyville Fairfield E
Madison New Haven E
Meriden New Haven E
Middlebury New Haven E
Milford New Haven E
Monroe Fairfield E
Naugatuck New Haven E
New Canaan Fairfield E
New Fairfield Fairfield E
New Haven New Haven E
Newtown Fairfield E
North Branford New Haven E
North Haven New Haven E
Northford New Haven E
Norwalk Fairfield E
Old Greenwich Fairfield E
Orange New Haven E
Oxford New Haven E
Prospect New Haven E
Redding Fairfield E
Redding Center Fairfield E
Redding Ridge Fairfield E
Ridgefield Fairfield E
Riverside Fairfield E
Roxbury Litchfield E
Sandy Hook Fairfield E
Seymour New Haven E
Shelton Fairfield E
Sherman Fairfield E
South Britain New Haven E
Southbury New Haven E
Southport Fairfield E
Stamford Fairfield E
Stevenson Fairfield E
Stratford Fairfield E
Trumbull Fairfield E
Wallingford New Haven E
Waterbury New Haven E
West Haven New Haven E
Weston Fairfield E
Westport Fairfield E
Wilton Fairfield E
Wolcott New Haven E
Woodbridge New Haven E
Woodbury Litchfield E
  1. Listed in the table above are most, often not all places served by area code 203. When two or more places with the same name are located in the same state we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. E stands for Eastern Time (currently 09:42:03 PM).

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