phone book, or the business directory.

Area Code 240

Located in the Eastern (GMT -05:00) time zone. Area code 240 serves the state of Maryland. This area code was assigned on June 21st, 1996. On June 1st, 1997 it went into service. 240 is a General Purpose Code. 240 service area does overlap with 301 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

Information for Area Code 240

Area Code
240
Country
United States
State
Maryland (MD)
Major City
Bethesda
Time Zone
Eastern (GMT -05:00)
Population
1,075,439
White Population
735,405
Black Population
206,724
Hispanic Population
77,630
Asian Population
68,306
Hawaiian Population
559
Indian Population
3,306
Other Population
33,864
Male Population
520,334
Female Population
555,105
Avg House Value
$171,276.47
Avg Household Income
$61,679.39
Avg Persons Per Household
2.69
Median Age
36.62
Median Age (Male)
35.68
Median Age (Female)
37.50

List of Cities in Area Code Overlay Complex 270

  • Beltsville
  • Hyattsville
  • Gaithersburg
  • Hughesville
  • Laurel
  • Waldorf
  • Silver Spring
  • Bethesda
  • Frederick
  • Charlotte Hall
  • Upper Marlboro
  • Cumberland
  • Rockville
  • Riverdale
  • Hagerstown
  • Callaway
  • Temple Hills
  • Columbia
  • Nanjemoy
  • Clarksburg
  • Myersville
  • Brandywine
  • Sandy Spring
  • Washington
  • Leonardtown
  • Ellicott City
  • Glenn Dale
  • Clinton
  • La Plata
  • Capitol Heights
  • Allegany
  • Dayton
  • Mount Savage
  • Halethorpe
  • Ridge
  • Patuxent River
  • Williamsport
  • Indian Head
  • Knoxville
  • Hancock
  • Ashton
  • Garrett
  • Takoma Park
  • Owings
  • Poolesville
  • Mount Airy
  • Lonaconing
  • Issue
  • Smithsburg
  • Mount Rainier
  • Luke
  • Emmitsburg
  • Frostburg
  • Thurmont
  • Oakland
  • Westernport
  • Grantsville
  • Cascade
  • Chevy Chase
  • Gambrills
  • Middletown
  • Odenton
  • Ijamsville

List of Zip Codes in Area Code 240

  • 20782
  • 20722
  • 20712
  • 20680
  • 21742
  • 21740
  • 20815
  • 20814
  • 20816
  • 20818
  • 20812
  • 20706
  • 20720
  • 20769
  • 21770
  • 20872
  • 20871
  • 20646
  • 20611
  • 20677
  • 20640
  • 20602
  • 20601
  • 20603
  • 21550
  • 20659
  • 20622
  • 20637
  • 21701
  • 21703
  • 21704
  • 20662
  • 20837
  • 20851
  • 20852
  • 20853
  • 20879
  • 20877
  • 20886
  • 21702
  • 20723
  • 20724
  • 20707
  • 20664
  • 20632
  • 20645
  • 20745
  • 20817
  • 20653
  • 20620
  • 20634
  • 20850
  • 20650
  • 20613
  • 21719
  • 20772
  • 20762
  • 20623
  • 20705
  • 20708
  • 20855
  • 21536
  • 20895
  • 20902
  • 21532
  • 21750
  • 21788
  • 20748
  • 20744
  • 20906
  • 20781
  • 20737
  • 20740
  • 20770
  • 20735
  • 21727
  • 20901
  • 20747
  • 20743
  • 20785
  • 21044
  • 21046
  • 21045
  • 21562
  • 21036
  • 21029
  • 20777
  • 20774
  • 20711
  • 20910
  • 21710
  • 20861
  • 20860
  • 20862
  • 21502
  • 21795
  • 21771
  • 21113
  • 20746
  • 21773
  • 20690
  • 21754
  • 21769
  • 20715
  • 21054
  • 21114
  • 21042
  • 20710
  • 20912
  • 20878
  • 20670
  • 20758
  • 20689
  • 20736
  • 21539
  • 21540
  • 21783
  • 21545
  • 21075
  • 21227
  • 21240
  • 21716
  • 21758

SPs and Telephone companies in Area Code 270

  • Sprint Spectrum L.p.
  • Bandwidth.com Clec, Llc - Md
  • Verizon Maryland, Inc.
  • Baltimore-washington Telephone (bwt)
  • Omnipoint Communications Cap Operations, Llc
  • Broadwing Communications. Llc - Md
  • New Cingular Wireless Pcs, Llc - Dc
  • Peerless Network Of Maryland, Llc
  • Xo Maryland, Llc
  • Cavalier East Llc - Md
  • Broadvox-clec, Llc - Md
  • Cellco Partnership Dba Verizon Wireless - Md
  • Mci Worldcom Communications, Inc. - Md
  • Global Crossing Local Services, Inc.-md
  • 365 Wireless, Llc
  • Level 3 Telecom Of Maryland, Llc - Md
  • Us Lec Of Maryland, Inc.
  • Metro Pcs, Inc.
  • Teleport Communications America, Llc - Dc
  • Level 3 Communications, Llc - Md
  • Voxbeam Telecommunications Inc. - Md
  • Starpower Communications, Llc - Md
  • Comcast Phone Of Northern Maryland, Inc. - Md
  • Local Access Llc - Md
  • Atx Telecommunications Services, Ltd
  • Atlantech Online, Inc. - Md
  • Wide Voice, Llc - Md
  • Allegiance Telecom, Inc. - Md
  • Sprint Spectrum L.p. - Md
  • Telnyx Llc
  • Paetec Communications, Inc. - Dc
  • Paetec Communications, Inc. - Md
  • Cavalier Telephone Mid-atlantic, Llc - Md
  • Mcimetro Access Transmission Services Llc
  • Neutral Tandem-maryland, Llc - Md
  • Cellco Partnership Dba Verizon Wireless - MD
  • Commio, Llc
  • Centurylink Communications Llc
  • Vonage Network Inc.
  • Neutral Tandem-Maryland, Llc - MD
  • Telcove Operations, Inc. - Md
  • Lightwave Communications, Llc - Md
  • Mte, Inc. Dba Mte Paging Network
  • Core Communications, Inc. - Md
  • At&t Local
  • Uscoc Of Cumberland, Inc. Dba United States Cel Md
  • Ymax Communications Corp. - Md
  • Lumos Networks Inc. - Va
  • Shentel Communications, Llc - Md
  • Teleport Communications America, Llc - Md
  • Global Naps South, Inc. - Md
  • Dslnet Communications Va, Inc. - Md

Phone Numbers Beginning With 240