Active Prefixes in Area Code 203
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 203-323-#### | Stamford | Landline Numbers | Southern New England... |
| 203-324-#### | Stamford | Landline Numbers | Southern New England... |
| 203-325-#### | Stamford | Landline Numbers | Southern New England... |
| 203-326-#### | Stamford | Landline Numbers | Southern New England... |
| 203-327-#### | Stamford | Landline Numbers | Southern New England... |
| 203-328-#### | Stamford | Landline Numbers | Southern New England... |
| 203-329-#### | Stamford | Landline Numbers | Southern New England... |
| 203-330-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-331-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-332-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-333-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-334-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-335-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-336-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-337-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-338-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-339-#### | Bridgeport | Landline Numbers | Southern New England... |
| 203-340-#### | Greenwich | Landline Numbers | Cablevision Lightpat... |
| 203-341-#### | Westport | Landline Numbers | Southern New England... |
| 203-342-#### | Bridgeport | Wireless Numbers | Usa Mobility Wireles... |
| 203-343-#### | Derby | Wireless Numbers | New Cingular Wireles... |
| 203-344-#### | Old Greenwich | Landline Numbers | Cablevision Lightpat... |
| 203-345-#### | Bridgeport | Landline Numbers | Cablevision Lightpat... |
| 203-346-#### | Waterbury | Landline Numbers | Southern New England... |
| 203-347-#### | Greenwich | Landline Numbers | Level 3 Communicatio... |
| 203-348-#### | Stamford | Landline Numbers | Southern New England... |
| 203-349-#### | Westport | Landline Numbers | Teleport Communicati... |
| 203-350-#### | Madison | Landline Numbers | Teleport Communicati... |
| 203-351-#### | Stamford | Landline Numbers | Southern New England... |
| 203-352-#### | Stamford | Landline Numbers | Southern New England... |
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 | |