Active Prefixes in Area Code 240
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 240-423-#### | Silver Spring | Wireless Numbers | Omnipoint Communicat... |
| 240-424-#### | Washington Zone 3 | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-425-#### | Cabin John | Landline Numbers | Dslnet Communication... |
| 240-426-#### | Bethesda | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-427-#### | Waldorf | Landline Numbers | Xo Maryland, Llc... |
| 240-428-#### | Rockville | Landline Numbers | Bandwidth.com Clec, ... |
| 240-429-#### | Silver Spring | Wireless Numbers | Cellco Partnership D... |
| 240-430-#### | Kensington | Landline Numbers | Cavalier Telephone M... |
| 240-431-#### | Tall Timbers | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-432-#### | Washington Zone 3 | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-433-#### | Silver Spring | Landline Numbers | Cavalier Telephone M... |
| 240-434-#### | Washington | Landline Numbers | Broadwing Communicat... |
| 240-435-#### | Waldorf | Wireless Numbers | Cellco Partnership D... |
| 240-436-#### | Ijamsville | Landline Numbers | Telcove Operations, ... |
| 240-437-#### | Sandy Spring | Landline Numbers | Xo Maryland, Llc... |
| 240-438-#### | Silver Spring | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-439-#### | Frederick | Wireless Numbers | Cellco Partnership D... |
| 240-440-#### | Frederick | Wireless Numbers | Leap Wireless Intl, ... |
| 240-441-#### | Beltsville | Wireless Numbers | Omnipoint Communicat... |
| 240-442-#### | Oakland | Landline Numbers | Verizon Maryland, In... |
| 240-444-#### | Annapolis Junction | Wireless Numbers | Cellco Partnership D... |
| 240-445-#### | Bethesda | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-446-#### | Frederick | Wireless Numbers | Cellco Partnership D... |
| 240-447-#### | Rockville | Wireless Numbers | New Cingular Wireles... |
| 240-448-#### | Waldorf | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-449-#### | Gaithersburg | Wireless Numbers | New Cingular Wireles... |
| 240-450-#### | Silver Spring | Landline Numbers | Cavalier Telephone M... |
| 240-452-#### | Hagerstown | Landline Numbers | Lumos Networks Inc. ... |
| 240-453-#### | Rockville | Landline Numbers | Verizon Maryland, In... |
| 240-454-#### | Gaithersburg | Landline Numbers | Paetec Communication... |
Area Code 240 Introduction
| Area Code: | 240 |
| Country: | United States |
| State/Province: | Maryland - MD |
| Major City: | Gaithersburg |
| Time Zone: | Eastern |
| Average property | $1.87M |
| Average age | 62 y/o |
| Average assets | $229K |
| Population density | 12,407 sq mi (32,133 km2) |
| Population | 6,016,447 |
| latitude Longitude: | |
| 37° 53′ N to 39° 43′ N / 75° 03′ W to 79° 29′ W | |
| About 240 : | |
| The 240 Area Code (or Area Code 240) is located in the state of MD. Area Code 240 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 765 thousand unique phone numbers and 1.62 million individuals near the city of Bethesda Area code 240 was put into service. Area code 240 is an overlay of area code 301. |
|
| Major cities or places | |
| Bethesda, MD>Bowie, MD>Chillum, MD>Clinton, MD>College Park, MD>Cumberland, MD>Fairland, MD>Fort Washington, MD>Frederick, MD>Gaithersburg, MD>Germantown, MD>Greenbelt, MD>Hagerstown, MD>Landover, MD>Montgomery Village, MD>North Bethesda, MD>North Laurel, MD>North Potomac, MD>Olney, MD>Oxon Hill-glassmanor, MD>Potomac, MD>Rockville, MD>Silver Spring, MD>South Laurel, MD>St. Charles, MD>Suitland, MD>Waldorf, MD>Wheaton-glenmont, MD>White Oak, MD | |