Area Code 203
203 area code is being used for dialing/telecommunication purposes in Connecticut, covering 13 major cities and 2 counties, according to (NANP) North American Numbering Plan for 3-digit Numbering Plan Area (NPA) code. All the areas using NPA code 203 is part of EST (Eastern Standard Time) timezone.
203 Area Code Covers 13 Cities
Check this below table to know 13 major cities (having more than 20,000 population) in Connecticut using numbering plan area code 203 for dialing/telecommunication purposes.
| City | ZIP Codes | Population |
|---|---|---|
| Bridgeport, CT | 7 | 148,470 |
| Danbury, CT | 6 | 86,456 |
| Meriden, CT | 2 | 60,556 |
| New Haven, CT | 29 | 135,736 |
| North Haven, CT | 1 | 24,179 |
| Norwalk, CT | 13 | 91,050 |
| Shelton, CT | 1 | 41,206 |
| Stamford, CT | 15 | 135,413 |
| Waterbury, CT | 15 | 114,480 |
| West Haven, CT | 1 | 55,336 |
2 Counties Using 203 as Area Code
203 area code is being used in 2 counties of Connecticut for dialing/telecommunication purposes.
32 More NPA Codes Related to Area Code 203
1 or more of these 32 NPA codes are being used in the same or adjacent states of Connecticut in the United States.
- 212 Area Code
- 315 Area Code
- 332 Area Code
- 339 Area Code
- 347 Area Code
- 351 Area Code
- 401 Area Code
- 413 Area Code
- 475 Area Code
- 508 Area Code
- 516 Area Code
- 518 Area Code
- 585 Area Code
- 607 Area Code
- 617 Area Code
- 631 Area Code
- 646 Area Code
- 680 Area Code
- 716 Area Code
- 718 Area Code
- 774 Area Code
- 781 Area Code
- 838 Area Code
- 845 Area Code
- 857 Area Code
- 860 Area Code
- 914 Area Code
- 917 Area Code
- 929 Area Code
- 934 Area Code
- 959 Area Code
- 978 Area Code