301 Area Code
Maryland has four area codes, two serving either side of Patuxent River. To the west of the river is the 301 area code. It was one of the original codes assigned in 1947 and used to serve the entire state. It has now been split and then overlaid by the 240 area code. The Manocacy and Antietam National Battlefields are located here. The Catoctin Mountain Park provides campgrounds and trails for outdoor adventure. Camp David, the Presidential retreat, is located within the parks boundaries. Families can enjoy a visit to Crumland Farms to see a working farm and an 8 acre corn maze. Also found in this area code is the U.S. Army’s Fort Detrick and the National Naval Medical Center.
Area code 301 covers 72 cities in Maryland. 3 area codes are used by Maryland for approximately 5633597 residents. Its in the Eastern Time Zone.8 service providers including, Tcg , At&t Mobility, Verizon Wireless, Us Lec, Ymax Communications, Verizon Maryland, Usa Mobility, Multiple Ocn, and more service this area code through 2876 telephone exchanges.
Other Maryland Area Codes:
240 410 443
Recently Searched 301 #'s:
| Phone | City | Carrier | Type |
| 301-570-8221 | Ashton 236 | Verizon Maryland | Landline |
| 301-926-1237 | Gaithersburg | Verizon Maryland | Landline |
| 301-562-9340 | Washington Zone 3 | Verizon Maryland | Landline |
| 301-283-2271 | Washington Zone 6 | Verizon Maryland | Landline |
| 301-469-7598 | Washington Zone 2 | Verizon Maryland | Landline |
| 301-446-2091 | Washington Zone 13 | Verizon Maryland | Landline |
| 301-445-5441 | Washington Zone 3 | Verizon Maryland | Landline |
| 301-884-5323 | Mechanicsville | Verizon Maryland | Landline |
| 301-203-9247 | Washington Zone 6 | Verizon Maryland | Landline |
| 301-791-2180 | Hagerstown | Verizon Maryland | Landline |
| 301-340-9386 | Washington Zone 10 | Verizon Maryland | Landline |
| 301-604-3123 | Laurel 236 | Verizon Maryland | Landline |



