Area Code 240 — Maryland

Q: What time zone is area code 240?

Area code 240 is in the Eastern Time zone (Eastern Time).

Active General Purpose Code Overlay United States

Area code 240 is located in Maryland and operates on Eastern Time . The largest city served is Frederick .

Coverage Area

Area code 240 — Maryland

Area Code Details

Area Code: 240
State / Province: Maryland (MD)
Country: United States
Time Zone: Eastern Time Eastern Time
Local Time Now: —
Status: Active
Code Type: General Purpose Code
In Service Since: June 1, 1997
Assigned: June 21, 1996
Population Served: ~300,298 est.
Overlay Complex: 227/240/301

Cities Served

Largest City Frederick

Frederick Waldorf Gaithersburg Hagerstown Laurel Cumberland Poolesville Leonardtown Washington Zone 2 Damascus (Hagerstown LATA) Washington Zone 14 Washington Zone 3 Washington Zone 13 (Baltimore LATA) Washington Zone 12 Washington Zone 10 Ashton (Baltimore LATA) Washington Zone 11 Washington Zone 4

History & Relationships

Split from

301

Maryland

Overlay complex — shares geography with

227 Maryland

Rate Centers & Exchanges

18 rate centers identified within area code 240

View exchanges →

Other Area Codes in Maryland

View all →

Nearby Area Codes

Frequently Asked Questions About Area Code 240

What state is area code 240?

Area code 240 is located in Maryland, United States.

Where is area code 240 from?

Area code 240 originates from Maryland. It operates in the Eastern Time zone.

What time zone is area code 240?

Area code 240 falls within the Eastern Time zone (Eastern Time).

What cities are in area code 240?

Area code 240 serves cities including Frederick, Waldorf, Gaithersburg, Hagerstown, Laurel, Cumberland, Poolesville, Leonardtown, and more.

Is a call from area code 240 a scam?

Area code 240 is a legitimate general purpose code area code serving Maryland. Like any area code, individual numbers using 240 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.