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

08:45:47 AM 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
203-200New Haven8/14/2008
203-201New Haven
203-202Darien
203-204Guilford
203-205Danbury
203-206Waterbury
203-207Danbury
203-208Branford
203-209Bridgeport
203-210Wilton
203-212Bridgeport10/23/2008
203-213Meriden
203-214New Haven
203-215New Haven
203-216Westport
203-217Waterbury
203-218Bridgeport
203-219Stamford
203-220Trumbull
203-221Westport
203-222Westport
203-223Stamford
203-224Bridgeport
203-225Huntington
203-226Westport
203-227Westport
203-228Waterbury10/4/2002
203-229Norwalk
203-230New Haven
203-231Ansonia/Derby
203-232Waterbury
203-233Waterbury
203-234New Haven
203-235Meriden
203-236Waterbury
203-237Meriden
203-238Meriden
203-239New Haven
203-240Danbury
203-241Danbury
203-242Huntington
203-243Bridgeport
203-244Ridgefield3/28/2003
203-245Madison
203-246Norwalk
203-247Norwalk
203-248New Haven
203-249Stamford
203-250Cheshire
203-251Stamford
203-252Stamford
203-253Stamford
203-254Fairfield
203-255Fairfield
203-256Fairfield
203-257Bridgeport
203-258Bridgeport
203-259Fairfield
203-260Bridgeport
203-261Trumbull
203-262Woodbury
203-263Woodbury
203-264Woodbury
203-265Wallingford
203-266Woodbury
203-267Woodbury
203-268Trumbull
203-269Wallingford
203-270Newtown
203-271Cheshire
203-272Cheshire
203-273Stamford10/22/2002
203-274Stamford
203-275Bridgeport
203-276Stamford3/28/2003
203-277Old Greenwich4/16/2003
203-278Ansonia/Derby5/1/2001
203-279Bridgeport
203-280Darien3/24/2004
203-281New Haven
203-282Stamford
203-283Milford
203-284Wallingford
203-285New Haven
203-286Norwalk
203-287New Haven
203-288New Haven
203-289Danbury
203-290Bridgeport11/14/2013
203-291Westport
203-292Fairfield
203-293Westport
203-294Wallingford
203-295Norwalk
203-296Bridgeport
203-297Danbury
203-298New Haven
203-299Norwalk
203-300Danbury10/25/2001
203-301Milford
203-302Greenwich
203-303Wallingford
203-304Newtown
203-305Ansonia/Derby
203-306Milford
203-307Fairfield1/31/2005
203-308Ansonia/Derby10/22/2008
203-309Darien9/11/2007
203-310New Canaan4/16/2003
203-312Danbury
203-313Danbury
203-314New Haven
203-315Branford
203-316Stamford
203-317Meriden
203-318Madison
203-319Fairfield
203-320Darien4/16/2003
203-321Stamford
203-322Stamford
203-323Stamford
203-324Stamford
203-325Stamford
203-326Stamford
203-327Stamford
203-328Stamford
203-329Stamford
203-330Bridgeport
203-331Bridgeport
203-332Bridgeport
203-333Bridgeport
203-334Bridgeport
203-335Bridgeport
203-336Bridgeport
203-337Bridgeport
203-338Bridgeport
203-339Bridgeport
203-340Greenwich8/19/2003
203-341Westport
203-342Bridgeport
203-343Ansonia/Derby1/18/2012
203-344Old Greenwich
203-345Bridgeport
203-346Waterbury
203-347Byram3/11/2004
203-348Stamford
203-349Westport
203-350Madison
203-351Stamford
203-352Stamford
203-353Stamford
203-354Norwalk
203-355Stamford
203-356Stamford
203-357Stamford
203-358Stamford
203-359Stamford
203-360Bridgeport12/10/2008
203-361New Haven12/16/2010
203-362Bridgeport
203-363Stamford
203-364Newtown
203-365Bridgeport
203-366Bridgeport
203-367Bridgeport
203-368Bridgeport
203-369Old Greenwich10/7/2003
203-370New Haven
203-371Bridgeport
203-372Bridgeport
203-373Bridgeport
203-374Bridgeport
203-375Bridgeport
203-376New Haven
203-377Bridgeport
203-378Bridgeport
203-379Meriden
203-380Bridgeport
203-381Bridgeport
203-382Bridgeport
203-383Bridgeport
203-384Bridgeport
203-385Bridgeport
203-386Bridgeport
203-387New Haven
203-388Stamford
203-389New Haven
203-390New Haven11/10/2015
203-391Stamford
203-392New Haven
203-393New Haven
203-394Bridgeport
203-395Bridgeport
203-396Bridgeport
203-397New Haven
203-398Norwalk
203-399Stamford
203-400Trumbull2/19/2002
203-401New Haven
203-402Huntington
203-403Ridgefield
203-404New Haven
203-405Woodbury4/4/2001
203-406Stamford
203-407New Haven
203-408Redding
203-409Old Greenwich
203-410New Haven
203-412New Haven
203-413Greenwich
203-414Bridgeport
203-415New Haven4/12/2001
203-416Bridgeport
203-417Danbury
203-418Fairfield
203-419Waterbury
203-420Meriden
203-421Madison
203-422Greenwich
203-423Wilton
203-424Darien6/29/2007
203-425Stamford
203-426Newtown
203-427Meriden
203-428Stamford
203-429Westport
203-430New Haven
203-431Ridgefield
203-432New Haven
203-433Branford
203-434Norwalk
203-435New Haven
203-436New Haven
203-437Waterbury
203-438Ridgefield
203-439Cheshire
203-440Meriden
203-441Wolcott
203-442New Canaan
203-443Meriden
203-444New Haven
203-445Trumbull
203-446Ansonia/Derby
203-447Huntington
203-448Danbury
203-449Bridgeport
203-450Bridgeport5/12/2008
203-451Westport
203-452Trumbull
203-453Guilford
203-454Westport
203-455Bridgeport
203-456Danbury12/6/2011
203-457Guilford
203-458Guilford
203-459Trumbull
203-460Danbury
203-461Stamford
203-462Stamford
203-463Seymour
203-464New Haven
203-465Waterbury
203-466New Haven
203-467New Haven
203-468New Haven
203-469New Haven
203-470Danbury
203-477New Haven
203-479New Haven
203-480Fairfield
203-481Branford
203-482Danbury3/23/2001
203-483Branford
203-484Branford
203-485Greenwich
203-486Woodbury
203-487Stamford1/3/2001
203-488Branford
203-489Greenwich5/25/2011
203-490Naugatuck
203-491Newtown2/12/2010
203-492New Haven
203-493Georgetown
203-494New Haven
203-495New Haven
203-496Greenwich
203-497New Haven
203-498New Haven
203-499New Haven
203-500New Haven10/25/2001
203-501Danbury7/9/2010
203-502Bridgeport
203-503New Haven
203-504Stamford2/12/2004
203-505Norwalk
203-506New Haven
203-507New Haven
203-508New Haven2/3/2005
203-509Waterbury
203-510Waterbury
203-512Danbury
203-513Huntington
203-514Meriden
203-515Norwalk
203-516Ansonia/Derby
203-517Stamford
203-518Waterbury7/2/2001
203-519Waterbury2/9/2011
203-520Bridgeport5/30/2002
203-521Bridgeport
203-522Bridgeport
203-523Norwalk
203-524Stamford
203-525Waterbury
203-526Bridgeport
203-527Waterbury
203-528Waterbury
203-529Wilton
203-530New Haven
203-531Byram
203-532Byram
203-533Guilford
203-534Bridgeport
203-535New Haven
203-536Stamford
203-537Meriden
203-538Huntington
203-539Stamford
203-540Bridgeport1/31/2005
203-541Stamford
203-542Greenwich
203-543Bridgeport
203-544Georgetown
203-545Bridgeport
203-546Danbury
203-547Stamford
203-548Stamford5/30/2002
203-549Bridgeport
203-550Stamford
203-551Bridgeport
203-552Byram
203-553New Haven
203-554Stamford
203-556Bridgeport
203-557Westport
203-558Waterbury
203-559Darien
203-560Waterbury
203-561Stamford
203-562New Haven
203-563Wilton
203-564Stamford
203-565Waterbury
203-566Stamford2/4/2003
203-567Huntington
203-568Waterbury
203-569Stamford
203-570Stamford3/26/2001
203-571Westport
203-572Bridgeport7/13/2007
203-573Waterbury
203-574Waterbury
203-575Waterbury
203-576Bridgeport
203-577Waterbury
203-578Waterbury
203-579Bridgeport
203-580Byram10/2/2012
203-581Bridgeport
203-582New Haven
203-583Bridgeport
203-584New Haven7/9/2010
203-585Stamford
203-586Woodbury
203-587Georgetown
203-588Stamford
203-589New Haven
203-590Trumbull3/18/2011
203-591Waterbury
203-592Waterbury
203-593Norwalk
203-594New Canaan
203-595Stamford
203-596Waterbury
203-597Waterbury
203-598Waterbury
203-599Meriden
203-600Meriden10/3/2008
203-601Trumbull
203-602Stamford
203-603New Haven
203-604Norwalk3/14/2001
203-605New Haven
203-606New Haven
203-607Stamford2/4/2003
203-608Meriden
203-609Stamford
203-610Bridgeport
203-612Bridgeport
203-613Norwalk
203-614Stamford
203-615Bridgeport
203-616Danbury
203-617Danbury9/5/2006
203-618Greenwich
203-619New Haven
203-620Darien7/19/2004
203-621Darien
203-622Greenwich
203-623New Haven
203-624New Haven
203-625Greenwich
203-626Wallingford
203-627New Haven
203-628Danbury
203-629Greenwich
203-630Meriden
203-631Meriden
203-632Naugatuck
203-633Wolcott
203-634Meriden
203-635Westport
203-636Darien9/14/2004
203-637Old Greenwich
203-638Trumbull
203-639Meriden
203-640New Haven
203-641New Haven
203-642Norwalk
203-643Branford
203-644Norwalk
203-645New Haven
203-646Branford
203-647Milford
203-648Danbury
203-649Cheshire
203-650Bridgeport3/26/2001
203-651Cheshire
203-652New Canaan
203-653Stamford
203-654New Haven
203-655Darien
203-656Darien
203-657New Haven
203-658Stamford
203-659Fairfield
203-660Byram1/3/2001
203-661Greenwich
203-662Darien
203-663Norwalk
203-664Redding
203-665Wilton
203-666Bridgeport9/26/2013
203-667Stamford
203-668New Haven
203-669Darien
203-670Fairfield 12/6/2021
203-671New Haven
203-672New Haven
203-673Bridgeport
203-674Stamford
203-675New Haven
203-676New Haven
203-677Wallingford
203-678Wallingford
203-679Wallingford
203-680New Haven10/31/2012
203-681Byram
203-682Westport
203-683Bridgeport
203-684New Haven10/3/2008
203-685Bridgeport3/30/2001
203-686Meriden
203-687New Haven
203-688New Haven
203-689Guilford
203-690Bridgeport3/21/2008
203-691New Haven
203-692Fairfield
203-693Milford7/13/2010
203-694Meriden
203-695Waterbury
203-696Bridgeport
203-697Wallingford
203-698Old Greenwich
203-699Cheshire
203-701Milford
203-702Danbury
203-703Stamford
203-704Wolcott7/17/2002
203-705Stamford
203-706Waterbury2/12/2004
203-707Waterbury3/10/2011
203-708Stamford
203-709Waterbury
203-710New Haven
203-712Huntington
203-713Milford
203-714Naugatuck
203-715Meriden
203-716New Canaan
203-717Greenwich1/28/2011
203-718Cheshire
203-719Stamford
203-720Naugatuck
203-721Waterbury
203-722Norwalk
203-723Naugatuck
203-724Stamford
203-725Waterbury
203-726Bridgeport9/8/2010
203-727Bridgeport6/5/2001
203-728Stamford11/22/2006
203-729Naugatuck
203-730Danbury
203-731Danbury
203-732Ansonia/Derby
203-733Danbury
203-734Ansonia/Derby
203-735Ansonia/Derby
203-736Ansonia/Derby
203-737New Haven
203-738Guilford
203-739Danbury
203-740Danbury
203-741Wallingford
203-742Greenwich4/10/2003
203-743Danbury
203-744Danbury
203-745New Haven
203-746Danbury
203-747New Haven
203-748Danbury
203-749Danbury
203-750Norwalk
203-751Ansonia/Derby
203-752New Haven
203-753Waterbury
203-754Waterbury
203-755Waterbury
203-756Waterbury
203-757Waterbury
203-758Waterbury
203-759Waterbury
203-760Bridgeport4/16/2012
203-761Wilton
203-762Wilton
203-763Fairfield
203-764New Haven
203-765New Haven
203-766New Haven
203-767Bridgeport
203-768Waterbury
203-769Greenwich
203-770Danbury
203-771New Haven
203-772New Haven
203-773New Haven
203-774Wallingford
203-775Danbury
203-776New Haven
203-777New Haven
203-778Danbury
203-779Madison
203-780New Haven10/2/2012
203-781New Haven
203-782New Haven
203-783Milford
203-784New Haven
203-785New Haven
203-786New Haven
203-787New Haven
203-788Danbury
203-789New Haven
203-790Danbury
203-791Danbury
203-792Danbury
203-793Wallingford3/23/2001
203-794Danbury
203-795New Haven
203-796Danbury
203-797Danbury
203-798Danbury
203-799New Haven
203-800New Haven3/10/2011
203-801New Canaan
203-802Waterbury10/3/2008
203-803Norwalk
203-804New Haven
203-805Waterbury
203-806Cheshire
203-807Norwalk1/30/2001
203-808Waterbury5/30/2002
203-809New Haven11/4/2002
203-810Norwalk7/27/2001
203-812New Haven
203-813Byram
203-814Bridgeport
203-815New Haven
203-816Trumbull3/14/2001
203-817Stamford
203-818Norwalk
203-819Waterbury
203-820Norwalk
203-821New Haven
203-822Norwalk
203-823New Haven
203-824New Haven
203-825Danbury
203-826Danbury
203-827Old Greenwich7/19/2004
203-828Seymour
203-829Norwalk
203-830Danbury
203-831Norwalk
203-832Stamford4/6/2006
203-833New Haven7/29/2015
203-834Wilton
203-835Norwalk
203-836New Haven12/6/2011
203-837Danbury
203-838Norwalk
203-839Norwalk
203-840Norwalk
203-841Waterbury
203-842Norwalk
203-843New Haven
203-844Fairfield8/16/2004
203-845Norwalk
203-846Norwalk
203-847Norwalk
203-848New Haven
203-849Norwalk
203-850New Haven10/3/2008
203-851Norwalk
203-852Norwalk
203-853Norwalk
203-854Norwalk
203-855Norwalk
203-856Norwalk
203-857Norwalk
203-858Norwalk
203-859New Haven
203-861Greenwich
203-862Greenwich
203-863Greenwich
203-864Bridgeport3/7/2011
203-865New Haven
203-866Norwalk
203-867New Haven
203-868New Haven
203-869Greenwich
203-870Bridgeport
203-871Branford
203-872Cheshire
203-873Bridgeport2/7/2007
203-874Milford
203-875Darien
203-876Milford
203-877Milford
203-878Milford
203-879Wolcott
203-880Trumbull
203-881Seymour
203-882Milford
203-883Stamford
203-884Guilford
203-885Danbury10/30/2006
203-886Meriden
203-887New Haven
203-888Seymour
203-889New Haven
203-890Stamford7/27/2001
203-891New Haven
203-892Ansonia/Derby11/8/2010
203-893Ansonia/Derby6/29/2007
203-894Ridgefield
203-895Trumbull
203-896Madison
203-897Stamford8/20/2008
203-898Darien1/31/2005
203-899Norwalk
203-900Greenwich2/24/2012
203-901New Haven
203-902New Haven
203-903New Haven
203-904Norwalk
203-905Stamford
203-906Ansonia/Derby4/23/2002
203-907New Haven
203-908Bridgeport4/5/2006
203-909New Haven5/13/2008
203-910Waterbury
203-912Stamford
203-913Bridgeport
203-914Stamford2/24/2012
203-915New Haven
203-916Bridgeport1/30/2001
203-917Danbury10/22/2008
203-918Stamford
203-919Norwalk
203-920New Canaan2/20/2004
203-921Stamford
203-922Huntington
203-923Bridgeport
203-924Huntington
203-925Huntington
203-926Huntington
203-927New Haven
203-928New Haven
203-929Huntington
203-930Greenwich3/14/2001
203-931New Haven
203-932New Haven
203-933New Haven
203-934New Haven
203-935Meriden
203-936New Haven9/12/2008
203-937New Haven
203-938Redding
203-939Norwalk6/25/2008
203-940Stamford
203-941Seymour9/21/2010
203-942Danbury
203-943Norwalk
203-944Huntington
203-945Norwalk
203-946New Haven
203-947Danbury
203-948Danbury
203-949Wallingford
203-951Milford
203-952Norwalk
203-953Bridgeport7/27/2001
203-954Ansonia/Derby
203-955Fairfield2/20/2004
203-956Norwalk1/30/2001
203-957Norwalk5/25/2011
203-960Stamford9/15/2008
203-961Stamford
203-962Stamford
203-963Norwalk
203-964Stamford
203-965Stamford
203-966New Canaan
203-967Stamford
203-968Stamford
203-969Stamford
203-970Norwalk4/4/2011
203-971Greenwich
203-972New Canaan
203-973Stamford
203-974New Haven
203-975Stamford
203-977Stamford
203-978Stamford
203-979Stamford
203-980New Haven8/20/2002
203-981Norwalk
203-982Waterbury
203-983Greenwich
203-984Norwalk
203-985New Haven
203-986Old Greenwich2/20/2004
203-987Greenwich3/30/2001
203-988New Haven
203-989Stamford
203-990Old Greenwich1/31/2005
203-991Norwalk
203-992Greenwich5/12/2006
203-993Bridgeport7/20/2006
203-994Danbury12/14/2001
203-995Bridgeport10/8/2008
203-996New Haven12/14/2001
203-997Ansonia/Derby5/18/2011
203-998Stamford10/15/2004
203-999New Haven3/9/2011
  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
AnsoniaNew Haven E
Beacon FallsNew Haven E
BethanyNew Haven E
BethelFairfield E
BethlehemLitchfield E
BotsfordFairfield E
BranfordNew Haven E
BridgeportFairfield E
BrookfieldFairfield E
CheshireNew Haven E
Cos CobFairfield E
DanburyFairfield E
DarienFairfield E
DerbyNew Haven E
East HavenNew Haven E
EastonFairfield E
FairfieldFairfield E
GeorgetownFairfield E
Greens FarmsFairfield E
GreenwichFairfield E
GuilfordNew Haven E
HamdenNew Haven E
HawleyvilleFairfield E
MadisonNew Haven E
MeridenNew Haven E
MiddleburyNew Haven E
MilfordNew Haven E
MonroeFairfield E
NaugatuckNew Haven E
New CanaanFairfield E
New FairfieldFairfield E
New HavenNew Haven E
NewtownFairfield E
North BranfordNew Haven E
North HavenNew Haven E
NorthfordNew Haven E
NorwalkFairfield E
Old GreenwichFairfield E
OrangeNew Haven E
OxfordNew Haven E
ProspectNew Haven E
ReddingFairfield E
Redding CenterFairfield E
Redding RidgeFairfield E
RidgefieldFairfield E
RiversideFairfield E
RoxburyLitchfield E
Sandy HookFairfield E
SeymourNew Haven E
SheltonFairfield E
ShermanFairfield E
South BritainNew Haven E
SouthburyNew Haven E
SouthportFairfield E
StamfordFairfield E
StevensonFairfield E
StratfordFairfield E
TrumbullFairfield E
WallingfordNew Haven E
WaterburyNew Haven E
West HavenNew Haven E
WestonFairfield E
WestportFairfield E
WiltonFairfield E
WolcottNew Haven E
WoodbridgeNew Haven E
WoodburyLitchfield 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 08:45:47 AM).

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