phone book, or the business directory.

Area Code 301

Located in the Eastern (GMT -05:00) time zone. Area code 301 serves the state of Maryland. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 301 is a General Purpose Code. 301 service area does overlap with 240 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

Information for Area Code 301

Area Code
301
Country
United States
State
Maryland (MD)
Major City
Silver Spring
Time Zone
Eastern (GMT -05:00)
Population
2,587,425
White Population
1,507,069
Black Population
777,012
Hispanic Population
177,817
Asian Population
150,435
Hawaiian Population
1,267
Indian Population
8,057
Other Population
77,825
Male Population
1,255,714
Female Population
1,331,711
Avg House Value
$167,230.68
Avg Household Income
$60,205.42
Avg Persons Per Household
2.69
Median Age
37.16
Median Age (Male)
36.32
Median Age (Female)
37.94

List of Cities in Area Code Overlay Complex 270

  • Frederick
  • Capitol Heights
  • Silver Spring
  • Hagerstown
  • Riverdale
  • Lanham
  • Myersville
  • Cumberland
  • Laurel
  • Patuxent River
  • Hyattsville
  • Accident
  • Indian Head
  • Bethesda
  • Gaithersburg
  • Rockville
  • Waldorf
  • Mount Airy
  • Temple Hills
  • Brandywine
  • Beltsville
  • Upper Marlboro
  • Frostburg
  • Westernport
  • Takoma Park
  • Ashton
  • Abell
  • Glenn Dale
  • La Plata
  • New Market
  • Sandy Spring
  • Oakland
  • Hancock
  • Clarksburg
  • Poolesville
  • Leonardtown
  • Keedysville
  • Callaway
  • Walkersville
  • Swanton
  • Odenton
  • Drayden
  • Riva
  • Knoxville
  • Smithsburg
  • Brunswick
  • Clear Spring
  • Mount Rainier
  • Monrovia
  • North Beach
  • Baltimore
  • Clinton
  • Mechanicsville
  • Grantsville
  • Ridge
  • Columbia
  • Accokeek
  • Damascus
  • California
  • Luke
  • Middletown
  • Nanjemoy
  • Bittinger
  • Cascade
  • Edgewater
  • Williamsport
  • Hughesville
  • Issue
  • Thurmont
  • Mount Savage
  • Emmitsburg
  • Oldtown
  • Kitzmiller
  • Lonaconing

List of Zip Codes in Area Code 301

  • 20640
  • 20816
  • 20815
  • 20814
  • 20744
  • 20735
  • 20607
  • 20817
  • 21140
  • 21037
  • 21403
  • 20707
  • 20723
  • 20724
  • 20737
  • 20740
  • 20770
  • 20877
  • 20886
  • 20879
  • 20781
  • 20710
  • 20708
  • 20705
  • 20895
  • 20852
  • 20851
  • 20850
  • 20721
  • 20716
  • 20774
  • 21795
  • 20769
  • 20706
  • 20720
  • 20784
  • 20785
  • 20812
  • 21701
  • 21702
  • 21703
  • 20853
  • 20862
  • 20861
  • 20860
  • 20901
  • 20910
  • 20902
  • 20748
  • 20745
  • 20623
  • 20762
  • 20905
  • 20904
  • 20868
  • 20746
  • 21719
  • 20613
  • 21522
  • 20662
  • 20650
  • 20872
  • 20664
  • 20621
  • 20645
  • 20715
  • 21545
  • 20601
  • 20602
  • 20603
  • 21502
  • 20712
  • 20782
  • 20912
  • 20783
  • 21788
  • 20637
  • 20722
  • 20866
  • 20675
  • 20616
  • 20855
  • 20659
  • 21773
  • 20772
  • 20711
  • 20854
  • 20818
  • 21740
  • 21742
  • 21046
  • 21044
  • 21045
  • 20747
  • 20743
  • 21550
  • 20670
  • 20837
  • 20878
  • 21562
  • 21540
  • 20871
  • 21770
  • 21769
  • 20619
  • 20636
  • 20656
  • 21561
  • 21541
  • 20695
  • 20646
  • 20677
  • 20903
  • 21756
  • 20906
  • 21727
  • 21538
  • 21539
  • 21555
  • 20611
  • 21750
  • 21774
  • 20634
  • 20690
  • 20620
  • 21532
  • 21771
  • 20653
  • 21520
  • 21531
  • 20606
  • 20618
  • 20609
  • 20714
  • 21783
  • 21710
  • 21704
  • 21716
  • 21722
  • 21793
  • 20680
  • 21233
  • 21201
  • 21202
  • 21536
  • 21113
  • 21758
  • 21401
  • 21405
  • 20630
  • 20674
  • 20692

SPs and Telephone companies in Area Code 270

  • Sprint Spectrum L.p.
  • Verizon Maryland, Inc.
  • Metro Pcs, Inc.
  • New Cingular Wireless Pcs, Llc - Dc
  • Omnipoint Communications Cap Operations, Llc
  • Baltimore-washington Telephone (bwt)
  • Teleport Communications America, Llc - Dc
  • Level 3 Communications, Llc - Md
  • Usa Mobility Wireless, Inc.
  • Cavalier Telephone Mid-atlantic, Llc - Md
  • Uscoc Of Cumberland, Inc. Dba United States Cel Md
  • Cellco Partnership Dba Verizon Wireless - Md
  • Bandwidth.com Clec, Llc - Md
  • Mci Worldcom Communications, Inc. - Md
  • New Frontiers Telecommunications, Inc.
  • Mcimetro Access Transmission Services Llc
  • Core Communications, Inc. - Pa
  • Level 3 Telecom Of Maryland, Llc - Md
  • Core Communications, Inc. - Md
  • Teleport Communications America, Llc - Md
  • Idt America Corp - Md
  • Telnyx Llc
  • Neutral Tandem-maryland, Llc - Md
  • Starpower Communications, Llc - Md
  • Mountain Communications, Llc Dba Procom - Md
  • Sprint Spectrum L.p. - Md
  • Comcast Phone Of Northern Maryland, Inc. - Md
  • At&t Local
  • Virginia Pcs Alliance, L.c.
  • Telcove Operations, Inc. - Md
  • Paetec Communications, Inc. - Md
  • Vdl, Inc. Dba Global Telecom Brokers - Md
  • Ymax Communications Corp. - Md
  • Quantum Telecommunications, Inc. - Md
  • Xo Maryland, Llc
  • Us Lec Of Maryland, Inc.
  • Broadwing Communications. Llc - Md

Phone Numbers Beginning With 301