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240 Prefixes

Area Code 240 Phone Directory

Phone Numbers that start with (240) XXX-XXXX

Major Cities in Area Code 240

- Rank:170781
- Silver Spring, MD
- Rank:136922
- Washington, DC
- Rank:125213
- Gaithersburg, MD
- Rank:115832
- Hyattsville, MD
- Rank:102957
- Rockville, MD
- Rank:90334
- Laurel, MD
- Rank:80333
- Germantown, MD
- Rank:65051
- Frederick, MD
- Rank:65041
- Upper Marlboro, MD
- Rank:60608
- Waldorf, MD
- Rank:55183
- Bowie, MD
- Rank:50084
- District Heights, MD
- Rank:48211
- Capitol Heights, MD
- Rank:47863
- Temple Hills, MD
- Rank:47643
- Hagerstown, MD
- Rank:45187
- Suitland, MD
- Rank:43163
- Fort Washington, MD
- Rank:41531
- Montgomery Village, MD
- Rank:37961
- Baltimore, MD
- Rank:37442
- Oxon Hill, MD