475 area code
New Haven area, Eastern Time.Area code 475 covers New Haven, Stamford, Bridgeport and 29 more places in Connecticut, on Eastern Time. 203 covers the same area.
Right now in New Haven
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 9 AM to 8 PM (Connecticut law)
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Where 475 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 475 has 32. Each one's share is how many 475 numbers start there. Its biggest metro area is Bridgeport-Stamford-Norwalk, CT.
- New Haven15%
- Stamford9%
- Bridgeport9%
- Norwalk8%
- Danbury6%
- Waterbury6%
- Ansonia-Derby6%
- Huntington3%
- Greenwich2%
- Meriden2%
- Trumbull2%
- Fairfield2%
Also: Milford, Wallingford, Newtown, Darien, Branford, Westport, Cheshire, New Canaan, Old Greenwich, Byram, Woodbury, Naugatuck + 8 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 475 number?
Sales calls to homes and cell phones have legal hours, set by Connecticut law. Hold every 475 number to them, since you can't tell a work line from a personal cell.
What applies to 475Every day, 9 AM to 8 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Connecticut lawEvery day, 9 AM to 8 PMCalls to businesses are excluded.Conn. Gen. Stat. 42-288a(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
475 and 203
475 went into service on December 12, 2009. 475 and 203 cover the same area, so new numbers can get either code and neighbors can have different area codes. 475 holds 27% of the area's exchanges; 203 holds the most. Local calls take all 10 digits.
- 1947203 overlay
- 2009475 starts
Source: NANPA area code database
Other Connecticut area codes
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475 area code FAQ
What area code is 475?
475 is a Connecticut area code for New Haven, Stamford, Bridgeport, Norwalk and 28 more places.
What time zone is the 475 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
Is 203 the same as 475?
Same area, different code. 475 and 203 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 475 numbers?
Every day, 9 AM to 8 PM, local time, under Connecticut law.
When did the 475 area code start?
On December 12, 2009.
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