Active Prefixes in Area Code 240
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 240-266-#### | Reston | Landline Numbers | Global Naps South, I... |
| 240-268-#### | Washington Zone 10 | Landline Numbers | Allegiance Telecom, ... |
| 240-269-#### | Reston | Landline Numbers | Global Naps South, I... |
| 240-270-#### | Waldorf | Wireless Numbers | Cellco Partnership D... |
| 240-271-#### | Washington Zone 2 | Wireless Numbers | New Cingular Wireles... |
| 240-272-#### | Washington Zone 2 | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-273-#### | Washington | Landline Numbers | Broadwing Communicat... |
| 240-274-#### | Washington Zone 2 | Wireless Numbers | New Cingular Wireles... |
| 240-275-#### | Grantsville | Landline Numbers | Core Communications,... |
| 240-276-#### | Washington Zone 10 | Landline Numbers | Verizon Maryland, In... |
| 240-277-#### | Washington Zone 2 | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-278-#### | Annapolis Junction | Wireless Numbers | Cellco Partnership D... |
| 240-279-#### | Waldorf | Landline Numbers | Core Communications,... |
| 240-280-#### | Sterling | Landline Numbers | Comcast Phone Of Nor... |
| 240-281-#### | Washington Zone 2 | Wireless Numbers | New Cingular Wireles... |
| 240-282-#### | Reston | Landline Numbers | Global Naps South, I... |
| 240-283-#### | Washington Zone 11 | Landline Numbers | Paetec Communication... |
| 240-284-#### | Frostburg | Landline Numbers | Level 3 Communicatio... |
| 240-285-#### | Frederick | Wireless Numbers | Cellco Partnership D... |
| 240-286-#### | Washington Zone 2 | Wireless Numbers | Sprint Spectrum L.p.... |
| 240-287-#### | Hancock | Landline Numbers | Core Communications,... |
| 240-288-#### | Not available. | Landline Numbers | Comcast Phone Of Nor... |
| 240-289-#### | Herndon | Landline Numbers | Cavalier Telephone M... |
| 240-290-#### | Washington Zone 11 | Landline Numbers | Allegiance Telecom, ... |
| 240-291-#### | Hagerstown | Wireless Numbers | New Cingular Wireles... |
| 240-292-#### | Washington Zone 11 | Landline Numbers | Verizon Maryland, In... |
| 240-293-#### | Washington Zone 12 | Landline Numbers | Starpower Communicat... |
| 240-294-#### | Washington | Landline Numbers | Xo Maryland, Llc... |
| 240-295-#### | Herndon | Landline Numbers | Cavalier Telephone M... |
| 240-296-#### | Herndon | Landline Numbers | Cavalier Telephone M... |
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 | |