203 Area Code

Area code 203 generally covers New Haven, Stamford, and Bridgeport in the U.S. State of Connecticut.

Top cities in area code 203

City Prefixes
New Haven, CT16.7%
Stamford, CT13.8%
Bridgeport, CT12.2%
Norwalk, CT7.5%
Waterbury, CT7%
New Fairfield, CT6.9%
Greenwich, CT4.1%
Shelton, CT3.1%
Meriden, CT3%
Fairfield, CT1.8%

Top telephone carriers in area code 203

Carrier Prefixes
Frontier Communications43.6%
Verizon9.6%
New Cingular Wireless6.5%
Sprint Spectrum5.6%
Mcimetro Access Transmission Services5.1%
Cablevision Lightpath4.9%
Teleport Communications America4.2%
Level 3 Communications3.1%
Global Crossing Local Services2.8%
Omnipoint Communications2.7%

Area code 203 has 779 prefixes

Prefix Primary City Usage
203-200New HavenLandline
203-201New HavenWireless
203-202DarienLandline
203-204GuilfordLandline
203-205New FairfieldLandline
203-206WaterburyWireless
203-207New FairfieldLandline
203-208BranfordLandline
203-209BridgeportLandline
203-210WiltonLandline
203-212BridgeportWireless
203-213MeridenWireless
203-214New HavenWireless
203-215New HavenWireless
203-216WestportWireless
203-217WaterburyWireless
203-218BridgeportWireless
203-219StamfordWireless
203-220TrumbullLandline
203-221WestportLandline
203-222WestportLandline
203-223StamfordWireless
203-224BridgeportLandline
203-225SheltonLandline
203-226WestportLandline
203-227WestportLandline
203-228WaterburyWireless
203-229NorwalkLandline
203-230HamdenLandline
203-231SheltonWireless
203-232WaterburyWireless
203-233WaterburyWireless
203-234HamdenLandline
203-235MeridenLandline
203-236WaterburyLandline
203-237MeridenLandline
203-238MeridenLandline
203-239HamdenLandline
203-240New FairfieldWireless
203-241New FairfieldWireless
203-242SheltonLandline
203-243BridgeportWireless
203-244RidgefieldLandline
203-245MadisonLandline
203-246NorwalkWireless
203-247NorwalkWireless
203-248HamdenLandline
203-249StamfordWireless
203-250CheshireLandline
203-251StamfordLandline
203-252StamfordLandline
203-253StamfordWireless
203-254FairfieldLandline
203-255FairfieldLandline
203-256FairfieldLandline
203-257BridgeportWireless
203-258BridgeportWireless
203-259FairfieldLandline
203-260BridgeportWireless
203-261TrumbullLandline
203-262SouthburyLandline
203-263WoodburyLandline
203-264SouthburyLandline
203-265WallingfordLandline
203-266WoodburyLandline
203-267SouthburyLandline
203-268TrumbullLandline
203-269WallingfordLandline
203-270NewtownLandline
203-271CheshireLandline
203-272CheshireLandline
203-273StamfordWireless
203-274StamfordWireless
203-275BridgeportLandline
203-276StamfordLandline
203-277Old GreenwichLandline
203-278SheltonWireless
203-279BridgeportWireless
203-280DarienLandline
203-281HamdenLandline
203-282StamfordWireless
203-283MilfordLandline
203-284WallingfordLandline
203-285New HavenLandline
203-286NorwalkLandline
203-287HamdenLandline
203-288HamdenLandline
203-289New FairfieldWireless
203-290BridgeportWireless
203-291WestportLandline
203-292FairfieldLandline
203-293StamfordLandline
203-294WallingfordLandline
203-295StamfordLandline
203-296BridgeportLandline
203-297New FairfieldLandline
203-298New HavenLandline
203-299NorwalkLandline
203-300New FairfieldWireless
203-301MilfordLandline
203-302GreenwichLandline
203-303WallingfordLandline
203-304NewtownLandline
203-305SheltonWireless
203-306MilfordLandline
203-307FairfieldLandline
203-308SheltonWireless
203-309New HavenWireless
203-310New CanaanLandline
203-312New FairfieldLandline
203-313New FairfieldWireless
203-314New HavenWireless
203-315BranfordLandline
203-316StamfordLandline
203-317MeridenLandline
203-318MadisonLandline
203-319FairfieldLandline
203-320DarienLandline
203-321StamfordLandline
203-322StamfordLandline
203-323StamfordLandline
203-324StamfordLandline
203-325StamfordLandline
203-326StamfordLandline
203-327StamfordLandline
203-328StamfordLandline
203-329StamfordLandline
203-330BridgeportLandline
203-331BridgeportLandline
203-332BridgeportLandline
203-333BridgeportLandline
203-334BridgeportLandline
203-335BridgeportLandline
203-336BridgeportLandline
203-337BridgeportLandline
203-338BridgeportLandline
203-339BridgeportLandline
203-340GreenwichLandline
203-341WestportLandline
203-342BridgeportWireless
203-343SheltonWireless
203-344Old GreenwichLandline
203-345BridgeportLandline
203-346WaterburyLandline
203-347GreenwichLandline
203-348StamfordLandline
203-349WestportLandline
203-350MadisonLandline
203-351StamfordLandline
203-352StamfordLandline
203-353StamfordLandline
203-354NorwalkLandline
203-355StamfordLandline
203-356StamfordLandline
203-357StamfordLandline
203-358StamfordLandline
203-359StamfordLandline
203-360BridgeportWireless
203-361New HavenLandline
203-362BridgeportLandline
203-363StamfordLandline
203-364NewtownLandline
203-365BridgeportLandline
203-366BridgeportLandline
203-367BridgeportLandline
203-368BridgeportLandline
203-369Old GreenwichLandline
203-370New HavenWireless
203-371BridgeportLandline
203-372BridgeportLandline
203-373BridgeportLandline
203-374BridgeportLandline
203-375BridgeportLandline
203-376New HavenWireless
203-377BridgeportLandline
203-378BridgeportLandline
203-379MeridenLandline
203-380BridgeportLandline
203-381BridgeportLandline
203-382BridgeportLandline
203-383BridgeportLandline
203-384BridgeportLandline
203-385BridgeportLandline
203-386BridgeportLandline
203-387New HavenLandline
203-388StamfordLandline
203-389New HavenLandline
203-390New HavenWireless
203-391StamfordLandline
203-392New HavenLandline
203-393WoodbridgeLandline
203-394BridgeportLandline
203-395BridgeportWireless
203-396BridgeportLandline
203-397New HavenLandline
203-398NorwalkWireless
203-399StamfordLandline
203-400TrumbullWireless
203-401New HavenLandline
203-402SheltonLandline
203-403RidgefieldLandline
203-404New HavenLandline
203-405WoodburyLandline
203-406StamfordLandline
203-407HamdenLandline
203-408ReddingLandline
203-409Old GreenwichLandline
203-410New HavenWireless
203-412New HavenWireless
203-413GreenwichLandline
203-414BridgeportWireless
203-415New HavenWireless
203-416BridgeportLandline
203-417New FairfieldWireless
203-418FairfieldLandline
203-419WaterburyLandline
203-420MeridenLandline
203-421MadisonLandline
203-422GreenwichLandline
203-423WiltonLandline
203-424New FairfieldWireless
203-425StamfordLandline
203-426NewtownLandline
203-427MeridenLandline
203-428StamfordLandline
203-429StamfordLandline
203-430New HavenWireless
203-431RidgefieldLandline
203-432New HavenLandline
203-433BranfordLandline
203-434NorwalkWireless
203-435New HavenWireless
203-436New HavenLandline
203-437WaterburyLandline
203-438RidgefieldLandline
203-441WolcottLandline
203-442New CanaanLandline
203-443MeridenLandline
203-444New HavenWireless
203-445TrumbullLandline
203-446SheltonLandline
203-447SheltonLandline
203-448New FairfieldLandline
203-449BridgeportWireless
203-450BridgeportWireless
203-451WestportLandline
203-452TrumbullLandline
203-453GuilfordLandline
203-454WestportLandline
203-455BridgeportLandline
203-456DanburyWireless
203-457GuilfordLandline
203-458GuilfordLandline
203-459TrumbullLandline
203-460New FairfieldLandline
203-461StamfordLandline
203-462StamfordLandline
203-463SeymourLandline
203-464New HavenWireless
203-465WaterburyLandline
203-466New HavenLandline
203-467New HavenLandline
203-468New HavenLandline
203-469New HavenLandline
203-470New FairfieldWireless
203-471
203-472
203-473
203-474
203-476
203-477New HavenWireless
203-478
203-479West HavenLandline
203-480FairfieldLandline
203-481BranfordLandline
203-482New FairfieldWireless
203-483BranfordLandline
203-484NorthfordLandline
203-485GreenwichLandline
203-486SouthburyLandline
203-487StamfordLandline
203-488BranfordLandline
203-489GreenwichLandline
203-490NaugatuckLandline
203-491NewtownLandline
203-492New HavenLandline
203-493WiltonLandline
203-494New HavenWireless
203-495New HavenLandline
203-496GreenwichWireless
203-497New HavenLandline
203-498New HavenLandline
203-499New HavenLandline
203-500New HavenWireless
203-501DanburyWireless
203-502BridgeportLandline
203-503New HavenLandline
203-504StamfordLandline
203-505NorwalkLandline
203-506New HavenWireless
203-507New HavenWireless
203-508New HavenLandline
203-509WaterburyWireless
203-510WaterburyWireless
203-512New FairfieldWireless
203-513New HavenLandline
203-514MeridenLandline
203-515NorwalkWireless
203-516SheltonLandline
203-517StamfordLandline
203-518WaterburyWireless
203-519WaterburyWireless
203-520BridgeportWireless
203-521BridgeportWireless
203-522BridgeportWireless
203-523NorwalkLandline
203-524StamfordWireless
203-525WaterburyWireless
203-526BridgeportWireless
203-527WaterburyLandline
203-528WaterburyLandline
203-529WiltonLandline
203-530New HavenWireless
203-531RiversideLandline
203-532RiversideLandline
203-533GuilfordLandline
203-534BridgeportWireless
203-535New HavenLandline
203-536StamfordWireless
203-537MeridenWireless
203-538SheltonLandline
203-539StamfordLandline
203-540BridgeportWireless
203-541StamfordLandline
203-542GreenwichLandline
203-543BridgeportWireless
203-544WiltonLandline
203-545BridgeportWireless
203-546New FairfieldLandline
203-548StamfordLandline
203-549BridgeportLandline
203-550StamfordWireless
203-551BridgeportLandline
203-552GreenwichLandline
203-553New HavenLandline
203-554StamfordWireless
203-556BridgeportWireless
203-557WestportLandline
203-558WaterburyWireless
203-559DarienLandline
203-560WaterburyWireless
203-561StamfordWireless
203-562New HavenLandline
203-563WiltonLandline
203-564StamfordLandline
203-565WaterburyWireless
203-566StamfordLandline
203-567SheltonLandline
203-568WaterburyLandline
203-569StamfordLandline
203-570StamfordWireless
203-571WestportLandline
203-572BridgeportWireless
203-573WaterburyLandline
203-574WaterburyLandline
203-575WaterburyLandline
203-576BridgeportLandline
203-577WaterburyLandline
203-578WaterburyLandline
203-579BridgeportLandline
203-580GreenwichLandline
203-581BridgeportLandline
203-582New HavenLandline
203-583BridgeportLandline
203-584New HavenWireless
203-585StamfordLandline
203-586WoodburyLandline
203-587WiltonLandline
203-588StamfordLandline
203-589New HavenWireless
203-590TrumbullLandline
203-591WaterburyLandline
203-592WaterburyWireless
203-593NorwalkWireless
203-594New CanaanLandline
203-595StamfordLandline
203-596WaterburyLandline
203-597WaterburyLandline
203-598WaterburyLandline
203-599MeridenLandline
203-600MeridenWireless
203-601TrumbullLandline
203-602StamfordLandline
203-603New HavenLandline
203-604StamfordLandline
203-605New HavenWireless
203-606New HavenWireless
203-607StamfordLandline
203-608MeridenLandline
203-609StamfordLandline
203-610BridgeportLandline
203-612BridgeportLandline
203-613NorwalkWireless
203-614StamfordLandline
203-615BridgeportLandline
203-616New FairfieldLandline
203-617New FairfieldWireless
203-618GreenwichLandline
203-619New HavenLandline
203-620DarienLandline
203-621DarienLandline
203-622GreenwichLandline
203-623New HavenWireless
203-624New HavenLandline
203-625GreenwichLandline
203-626New HavenLandline
203-627New HavenWireless
203-628New FairfieldLandline
203-629GreenwichLandline
203-630MeridenLandline
203-631MeridenWireless
203-632NaugatuckLandline
203-633WolcottLandline
203-634MeridenLandline
203-635StamfordLandline
203-636DarienLandline
203-637Old GreenwichLandline
203-638TrumbullLandline
203-639MeridenLandline
203-640New HavenWireless
203-641New HavenWireless
203-642StamfordLandline
203-643BranfordLandline
203-644NorwalkWireless
203-645New HavenWireless
203-646BranfordLandline
203-647MilfordLandline
203-648New FairfieldLandline
203-649CheshireLandline
203-650BridgeportWireless
203-651CheshireLandline
203-652StamfordLandline
203-653StamfordLandline
203-654HamdenLandline
203-655DarienLandline
203-656DarienLandline
203-657New HavenWireless
203-658StamfordLandline
203-659FairfieldLandline
203-660GreenwichLandline
203-661GreenwichLandline
203-662DarienLandline
203-663StamfordLandline
203-664ReddingLandline
203-665StamfordLandline
203-666BridgeportLandline
203-667StamfordWireless
203-668New HavenWireless
203-669DarienLandline
203-670WaterburyWireless
203-671New HavenWireless
203-672New HavenLandline
203-673BridgeportLandline
203-674StamfordLandline
203-675New HavenWireless
203-676New HavenWireless
203-677WallingfordLandline
203-678WallingfordLandline
203-679WallingfordLandline
203-680WaterburyWireless
203-681GreenwichLandline
203-682StamfordLandline
203-683BridgeportLandline
203-684New HavenWireless
203-685BridgeportWireless
203-686MeridenLandline
203-687New HavenLandline
203-688New HavenLandline
203-689New HavenLandline
203-690BridgeportWireless
203-691New HavenLandline
203-692FairfieldLandline
203-693MilfordLandline
203-694MeridenLandline
203-695WaterburyLandline
203-696BridgeportLandline
203-697WallingfordLandline
203-698Old GreenwichLandline
203-699CheshireLandline
203-701New HavenLandline
203-702New FairfieldLandline
203-703StamfordLandline
203-704WolcottLandline
203-705StamfordLandline
203-706WaterburyLandline
203-707WaterburyWireless
203-708StamfordLandline
203-709WaterburyLandline
203-710New HavenWireless
203-712SheltonLandline
203-713MilfordLandline
203-714NaugatuckLandline
203-715MeridenWireless
203-716StamfordLandline
203-717GreenwichLandline
203-718CheshireLandline
203-719StamfordLandline
203-720NaugatuckLandline
203-721WaterburyLandline
203-722NorwalkWireless
203-723NaugatuckLandline
203-724StamfordLandline
203-726BridgeportWireless
203-727BridgeportWireless
203-728StamfordLandline
203-729NaugatuckLandline
203-730New FairfieldLandline
203-731New FairfieldLandline
203-732AnsoniaLandline
203-733New FairfieldWireless
203-734AnsoniaLandline
203-735AnsoniaLandline
203-736AnsoniaLandline
203-737New HavenLandline
203-738GuilfordLandline
203-739New FairfieldLandline
203-740New FairfieldLandline
203-741WallingfordLandline
203-742GreenwichLandline
203-743New FairfieldLandline
203-744New FairfieldLandline
203-745New HavenLandline
203-746New FairfieldLandline
203-747New HavenLandline
203-748New FairfieldLandline
203-749New FairfieldLandline
203-750NorwalkLandline
203-751AnsoniaLandline
203-752New HavenLandline
203-753WaterburyLandline
203-754WaterburyLandline
203-755WaterburyLandline
203-756WaterburyLandline
203-757WaterburyLandline
203-758WaterburyLandline
203-759WaterburyLandline
203-760BridgeportLandline
203-761WiltonLandline
203-762WiltonLandline
203-763FairfieldLandline
203-764New HavenLandline
203-765New HavenLandline
203-766New HavenWireless
203-767BridgeportWireless
203-768WaterburyWireless
203-769GreenwichLandline
203-770New FairfieldLandline
203-771New HavenLandline
203-772New HavenLandline
203-773New HavenLandline
203-774WallingfordLandline
203-775New FairfieldLandline
203-776New HavenLandline
203-777New HavenLandline
203-778New FairfieldLandline
203-779MadisonLandline
203-780WaterburyWireless
203-781New HavenLandline
203-782New HavenLandline
203-783MilfordLandline
203-784New HavenLandline
203-785New HavenLandline
203-786New HavenLandline
203-787New HavenLandline
203-788New FairfieldWireless
203-789New HavenLandline
203-790New FairfieldLandline
203-791New FairfieldLandline
203-792New FairfieldLandline
203-793WallingfordLandline
203-794New FairfieldLandline
203-795West HavenLandline
203-796New FairfieldLandline
203-797New FairfieldLandline
203-798New FairfieldLandline
203-799West HavenLandline
203-800New HavenWireless
203-801New CanaanLandline
203-802WaterburyWireless
203-803NorwalkWireless
203-804New HavenWireless
203-805WaterburyLandline
203-806CheshireLandline
203-807NorwalkWireless
203-808WaterburyWireless
203-809New HavenWireless
203-810NorwalkLandline
203-812New HavenLandline
203-813GreenwichLandline
203-814BridgeportLandline
203-815New HavenLandline
203-816TrumbullLandline
203-817StamfordLandline
203-818NorwalkLandline
203-819WaterburyLandline
203-820NorwalkWireless
203-821New HavenLandline
203-822NorwalkLandline
203-823New HavenLandline
203-824New HavenWireless
203-825New FairfieldLandline
203-826New FairfieldLandline
203-827Old GreenwichLandline
203-828SeymourLandline
203-829NorwalkWireless
203-830New FairfieldLandline
203-831NorwalkLandline
203-832StamfordWireless
203-833New HavenWireless
203-834WiltonLandline
203-835NorwalkWireless
203-836New HavenWireless
203-837New FairfieldLandline
203-838NorwalkLandline
203-839NorwalkWireless
203-840NorwalkLandline
203-841WaterburyLandline
203-842StamfordLandline
203-843New HavenLandline
203-844FairfieldLandline
203-845NorwalkLandline
203-846NorwalkLandline
203-847NorwalkLandline
203-848New HavenLandline
203-849NorwalkLandline
203-850New HavenWireless
203-851NorwalkLandline
203-852NorwalkLandline
203-853NorwalkLandline
203-854NorwalkLandline
203-855NorwalkLandline
203-856NorwalkWireless
203-857NorwalkLandline
203-858NorwalkWireless
203-859New HavenLandline
203-861GreenwichLandline
203-862GreenwichLandline
203-863GreenwichLandline
203-864BridgeportWireless
203-865New HavenLandline
203-866NorwalkLandline
203-867New HavenLandline
203-868New HavenLandline
203-869GreenwichLandline
203-870BridgeportLandline
203-871BranfordLandline
203-872New HavenLandline
203-873BridgeportWireless
203-874MilfordLandline
203-875DarienLandline
203-876MilfordLandline
203-877MilfordLandline
203-878MilfordLandline
203-879WolcottLandline
203-880TrumbullLandline
203-881SeymourLandline
203-882MilfordLandline
203-883StamfordLandline
203-884GuilfordLandline
203-885New FairfieldWireless
203-886MeridenLandline
203-887New HavenWireless
203-888SeymourLandline
203-889New HavenLandline
203-890StamfordLandline
203-891West HavenLandline
203-892BridgeportWireless
203-893SheltonWireless
203-894RidgefieldLandline
203-895TrumbullWireless
203-896MadisonLandline
203-897StamfordLandline
203-898DarienLandline
203-899NorwalkLandline
203-900GreenwichLandline
203-901New HavenWireless
203-902New HavenLandline
203-903New HavenLandline
203-904NorwalkWireless
203-905StamfordLandline
203-906SheltonWireless
203-907New HavenLandline
203-908BridgeportWireless
203-909New HavenWireless
203-910WaterburyWireless
203-912StamfordWireless
203-913BridgeportWireless
203-914NorwalkLandline
203-915New HavenWireless
203-916NorwalkLandline
203-917New FairfieldWireless
203-918StamfordWireless
203-919NorwalkWireless
203-920StamfordLandline
203-921StamfordLandline
203-922SheltonLandline
203-923BridgeportLandline
203-924SheltonLandline
203-925SheltonLandline
203-926SheltonLandline
203-927New HavenLandline
203-928New HavenLandline
203-929SheltonLandline
203-930GreenwichLandline
203-931West HavenLandline
203-932West HavenLandline
203-933West HavenLandline
203-934West HavenLandline
203-935MeridenLandline
203-936New HavenLandline
203-937West HavenLandline
203-938ReddingLandline
203-939NorwalkLandline
203-940StamfordLandline
203-941SeymourLandline
203-942New FairfieldLandline
203-943NorwalkWireless
203-944SheltonLandline
203-945NorwalkLandline
203-946New HavenLandline
203-947New FairfieldWireless
203-948New FairfieldWireless
203-949WallingfordLandline
203-951MilfordLandline
203-952NorwalkWireless
203-953BridgeportWireless
203-954SheltonLandline
203-955FairfieldLandline
203-956NorwalkLandline
203-957NorwalkLandline
203-960StamfordLandline
203-961StamfordLandline
203-962StamfordLandline
203-963NorwalkLandline
203-964StamfordLandline
203-965StamfordLandline
203-966New CanaanLandline
203-967StamfordLandline
203-968StamfordLandline
203-969StamfordLandline
203-970NorwalkLandline
203-971GreenwichLandline
203-972New CanaanLandline
203-973StamfordLandline
203-974New HavenLandline
203-975StamfordLandline
203-977StamfordLandline
203-978StamfordLandline
203-979StamfordWireless
203-980New HavenWireless
203-981NorwalkWireless
203-982WaterburyWireless
203-983GreenwichLandline
203-984NorwalkWireless
203-985HamdenLandline
203-986Old GreenwichLandline
203-987GreenwichLandline
203-988New HavenWireless
203-989NorwalkLandline
203-990Old GreenwichLandline
203-991NorwalkLandline
203-992GreenwichLandline
203-993BridgeportWireless
203-994New FairfieldWireless
203-995BridgeportLandline
203-996New HavenWireless
203-997SheltonWireless
203-998StamfordLandline
203-999New HavenWireless