240 Area Code Information
State: MD
Largest City in Area: SILVER SPRING
Where is Area Code 240? Area code (240) is in the state of MD. The PeopleSearchNow database has 939,460 records on file with a phone number in the area code of (240). Below, are the major cities in the area code (240).
Area Codes Starting with 2
Major Cities in 240
- SILVER SPRING, MD (170,781)
- WASHINGTON, DC (136,922)
- GAITHERSBURG, MD (125,213)
- HYATTSVILLE, MD (115,832)
- ROCKVILLE, MD (102,957)
- LAUREL, MD (90,334)
- GERMANTOWN, MD (80,333)
- FREDERICK, MD (65,051)
- UPPER MARLBORO, MD (65,041)
- WALDORF, MD (60,608)
Zip Codes in 240
- 20706
- 20708
- 20743
- 20744
- 20745
- 20746
- 20747
- 20748
- 20774
- 20785
- 20850
- 20874
- 20877
- 20878
- 20879
- 20886
- 20902
- 20904
- 20906
- 21740