Active Prefixes in Area Code 203
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 203-842-#### | Stamford | Landline Numbers | Global Crossing Loca... |
| 203-843-#### | New Haven | Landline Numbers | At&t Local... |
| 203-844-#### | Fairfield | Landline Numbers | Brooks Fiber Communi... |
| 203-845-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-846-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-847-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-848-#### | New Haven | Landline Numbers | Conversent Communica... |
| 203-849-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-850-#### | New Haven | Landline Numbers | Metro Pcs, Inc.... |
| 203-851-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-852-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-853-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-854-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-855-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-856-#### | Norwalk | Wireless Numbers | Cellco Partnership D... |
| 203-857-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-858-#### | Norwalk | Wireless Numbers | Cellco Partnership D... |
| 203-859-#### | New Haven | Landline Numbers | Brooks Fiber Communi... |
| 203-861-#### | Greenwich | Landline Numbers | Verizon New York, In... |
| 203-862-#### | Greenwich | Landline Numbers | Verizon New York, In... |
| 203-863-#### | Greenwich | Landline Numbers | Verizon New York, In... |
| 203-864-#### | Bridgeport | Wireless Numbers | Sprint Spectrum L.p.... |
| 203-865-#### | New Haven | Landline Numbers | Southern New England... |
| 203-866-#### | Norwalk | Landline Numbers | Southern New England... |
| 203-867-#### | New Haven | Landline Numbers | Southern New England... |
| 203-868-#### | New Haven | Landline Numbers | At&t Local... |
| 203-869-#### | Greenwich | Landline Numbers | Verizon New York, In... |
| 203-870-#### | Bridgeport | Landline Numbers | Cablevision Lightpat... |
| 203-871-#### | Branford | Landline Numbers | Teleport Communicati... |
| 203-872-#### | New Haven | Landline Numbers | At&t Local... |
Area Code 203 Introduction
| Area Code: | 203 |
| Country: | United States |
| State/Province: | Connecticut - CT |
| Major City: | New Haven |
| Time Zone: | Eastern |
| Average property | $280K |
| Average age | 55 y/o |
| Average assets | $51.8K |
| Population density | 5,543 sq mi (14,357 km2) |
| Population | 3,590,886 |
| latitude Longitude: | |
| 40°98′ N to 42°04′ N / 71°08′ W to 73°72′ W | |
| About 203 : | |
| The 203 Area Code (or Area Code 203) is located in the state of CT. Area Code 203 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 2.85 million unique phone numbers and 10.3 million individuals near the city of New Haven Area code 203 was put into service 01/01/1947. In 1995 Area code 203 was split to form area code 860. In 2009 area code 203 was overlaid with area code 475. |
|
| Major cities or places | |
| Danbury, CT>East Haven, CT>Meriden, CT>Milford, CT>Naugatuck, CT>New Haven, CT>North Haven, CT>Norwalk, CT>Shelton, CT>Stamford, CT>Stratford, CT>Trumbull, CT>Waterbury, CT>West Haven, CT>Westport, CT | |