Discover how you can pass your certification exams with 240 Tutoring. Here you'll find teacher certification exam study guides for a variety of classes. Practice Tests Each study guide comes with three full-length practice tests.

Understanding the Context

Earn a 90% or higher on a practice test and be eligible for our 240 Guarantee! Area Code 240 is located in Maryland. It covers 111 cities, including Baltimore, Columbia, Cumberland, Waldorf, and Silver Spring. It also covers 13 counties, including Montgomery County, Prince Georges County, Frederick County, Charles County, and Howard County.

Key Insights

Area Code 240 Map and Data Area Code 240 Profile ... Area Code 240 Boundary Map List of ZIP Codes in Area Code 240 ... List of Counties in Area Code 240 240 is an area code located in the state of Maryland, US. The largest city it serves is Germantown. Find out where 240 area code zone from, which states, counties and cities it covers.

Final Thoughts

Get the most exact information on time zones here. Find 240 area code details including city, time zone, and map. Lookup area code 240 phone number, name, and location. Browse area code 240 phone numbers, prefixes and exchanges. The 240 area code serves Washington, Beltsville, Frederick, Hagerstown, Annapolis Junction, covering 46 ZIP codes in 16 counties. In 1997, area code 240 was added as an overlay area code for the 301 territory.

On , a third overlay code, 227, was added to provide more central office prefixes for new telephone numbers. Lookup information on Area Code 240 - get demographic, NPA NXX, and other data by area code Area code 240 is a North American Numbering Plan (NPA) code specifically assigned to a significant portion of Maryland, playing a pivotal role in the state’s telecommunication framework.