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Area Code 240

General Information
Country	United States
State/Province	Maryland
Major City	Gaithersburg
Time Zone	Eastern (UTC-05:00)
Current Local Time	20:44

Area Code Prefixes

Prefix	County	Primary City
240-200	Prince Georges	Brentwood
240-201	Saint Marys	Ridge
240-203	Washington	Hagerstown
240-204	Montgomery	Chevy Chase
240-205	Montgomery	Glen Echo
240-206	Prince Georges	Bowie
240-207	Frederick	Monrovia
240-208	Charles	Port Tobacco
240-209	Charles	Indian Head
240-210	Charles	Waldorf
240-212	Garrett	Oakland
240-213	Charles	Waldorf
240-214	Saint Marys	Charlotte Hall
240-215	Frederick	Frederick
240-216	Charles	Waldorf
240-217	Washington	Hagerstown
240-218	Charles	Nanjemoy
240-219	Saint Marys	Ridge
240-220	Montgomery	Poolesville
240-221	Montgomery	Rockville
240-222	Charles	Waldorf
240-223	Prince Georges	Brentwood
240-224	Montgomery	Gaithersburg
240-225	Frederick	Frederick
240-228	Anne Arundel	Laurel
240-229	Charles	Waldorf
240-230	Charles	Hughesville
240-231	Washington	Hagerstown
240-232	Prince Georges	Brentwood
240-233	Charles	Issue
240-234	Prince Georges	Brentwood
240-235	Montgomery	Chevy Chase
240-236	Frederick	Frederick
240-237	Saint Marys	Callaway
240-238	Montgomery	Rockville
240-239	Saint Marys	Leonardtown
240-241	Montgomery	Bethesda
240-242	Montgomery	Bethesda
240-243	Montgomery	Gaithersburg
240-244	Montgomery	Bethesda
240-245	Prince Georges	Bowie
240-246	Montgomery	Gaithersburg
240-247	Prince Georges	Brentwood
240-248	Saint Marys	Ridge
240-249	Saint Marys	Charlotte Hall
240-250	Prince Georges	Brandywine
240-251	Washington	Cascade
240-252	Montgomery	Gaithersburg
240-253	Prince Georges	Cheltenham
240-254	Charles	Hughesville

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