Home › Connecticut › New Haven

New Haven, CT Area Codes

New Haven, Connecticut (population 138,774) uses area codes 203 and 475.

Area code203
Area code475
Time zoneEastern
Local time now…
New HavenBridgeportStamfordWaterburyNorwalkDanburyMeridenWest HavenMilfordSheltonNaugatuckEast HavenNorth HavenNew Haven
New Haven and nearby cities in area code 203

Carriers with New Haven numbers

188 prefixes are assigned to the New Haven exchange: 36% mobile, 15% VoIP and cable, 49% landline.

CarrierPrefixes
Frontier72
Verizon Wireless28
T-Mobile21
AT&T Mobility18
Onvoy (Sinch)9
AT&T (Teleport)5
Lumen (Level 3)5
Paetec Itel5

Area codes used in New Haven

Area codePrefixes serving New HavenMain carriers in this code
203145Frontier, Verizon Wireless, AT&T Mobility
47543Onvoy (Sinch), Verizon Wireless, T-Mobile

New Haven phone number prefixes

Numbers starting with these first six digits were originally assigned to the New Haven exchange.

Nearby cities in area code 203

Questions

What is the area code for New Haven, CT?
New Haven uses 2 area codes: 203 and 475. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is New Haven in?
New Haven is in the Eastern time zone.