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Area Code 503


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Area Code 503 was established in 1947 under the NANP (North American Numbering Plan).  The Code 503 served the entire State of Oregon until it was overlaid by area code 541 on 5th November 1995.
New area code 971 was introduced for providing numbering relief to areas under 503. After that it became mandatory to dial a ten-digit number for making even local calls else the calls may connect to wrong destination.
Time Zone followed by the 503 area code is Pacific Time Zone. The State of Oregon has kept three area codes reserved for providing telephone services to customers:

  • 503 (Created in 1947)
  • 541 (Created in 1995)
  • 971 (Created in 2000)
Other Codes surrounding the Code 503 are:
  • West: Pacific Ocean
  • North: 360
  • East: 541
  • South: 541

List of Counties:

  • CLACKAMAS
  • CLARK
  • CLATSOP
  • COLUMBIA
  • HOOD RIVER
  • LANE
  • LINN
  • MARION
  • MULTNOMAH
  • PIERCE
  • POLK
  • TILLAMOOK
  • WASHINGTON
  • YAMHILL

List of Cities:


  • AMITY
  • ARCH CAPE
  • ASHFORD
  • ASTORIA
  • AUMSVILLE
  • AURORA
  • BANKS
  • BAY CITY
  • BEAVER
  • BEAVERCREEK
  • BEAVERTON
  • BORING
  • BRIGHTWOOD
  • BUXTON
  • CANBY
  • CANNON BEACH
  • CARLTON
  • CLACKAMAS
  • CLATSKANIE
  • CLOVERDALE
  • COLTON
  • COLUMBIA CITY
  • CORBETT
  • CORNELIUS
  • DALLAS
  • DAYTON
  • DEER ISLAND
  • DETROIT
  • DONALD
  • DUNDEE
  • EAGLE CREEK
  • ESTACADA
  • FAIRVIEW
  • FALLS CITY
  • FOREST GROVE
  • GALES CREEK
  • GARIBALDI
  • GASTON
  • GATES
  • GERVAIS
  • GLADSTONE
  • GOVERNMENT CAMP
  • GRAND RONDE
  • GRESHAM
  • HAMMOND
  • HEBO
  • HILLSBORO
  • HUBBARD
  • IDANHA
  • INDEPENDENCE
  • LAFAYETTE
  • LAKE OSWEGO
  • LORANE
  • LYONS
  • MANNING
  • MANZANITA
  • MCMINNVILLE
  • MEHAMA
  • MILL CITY
  • MOLALLA
  • MONMOUTH
  • MOUNT ANGEL
  • MOUNT HOOD PARKDALE
  • MULINO
  • NEHALEM
  • NESKOWIN
  • NETARTS
  • NEWBERG
  • NORTH PLAINS
  • OCEANSIDE
  • OREGON CITY
  • PACIFIC CITY
  • PORTLAND
  • RAINIER
  • RHODODENDRON
  • RICKREALL
  • ROCKAWAY BEACH
  • SAINT HELENS
  • SAINT PAUL
  • SALEM
  • SANDY
  • SCAPPOOSE
  • SCIO
  • SCOTTS MILLS
  • SEASIDE
  • SHERIDAN
  • SHERWOOD
  • SILVERTON
  • STAYTON
  • SUBLIMITY
  • TILLAMOOK
  • TOLOVANA PARK
  • TROUTDALE
  • TUALATIN
  • TURNER
  • VANCOUVER
  • VERNONIA
  • WARREN
  • WARRENTON
  • WELCHES
  • WEST LINN
  • WHEELER
  • WILLAMINA
  • WILSONVILLE
  • WOODBURN
  • YAMHILL

Leading institutions, ISPs and Telephone companies:

Some of the leading educational institutions serving area code 503 are:
Major Telecom companies and Telephone Providers:
  • ALLTEL COMMUNICATIONS, INC. - AR
  • AMERICAN MESSAGING (AM), INC.
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
  • CENTURYTEL TEL OF ALABAMA, LLC (SOUTHERN)
  • COOK TELECOM, INC.
  • MPOWER COMMUNICATIONS CORP. - CA
  • NETWORK SERVICES LLC (TSR)
  • NEW CINGULAR WIRELESS PCS, LLC
  • NEXTEL COMMUNICATIONS, INC.
  • O1 COMMUNICATIONS, INC. - CA
  • PACIFIC BELL
  • QWEST CORPORATION
  • TIME WARNER TELECOM OF CALIFORNIA, L.P.
  • T-MOBILE USA, INC.
Major ISPs:
  • Atlas Internet Service 
  • Atoznet.Com    
  • Awnline.Net        
  • B on the Web    
  • bargainisp.net
  • BasicISP Click Here!        
  • Bayarea Internet Solutions
  • Bbe Computers Internet Service    
  • Best Rate ISP    
  • BestWeb Internet

Reverse Phone Check for the area code 503:

Nowadays it is simple to discover information about phone number having area code 503 through reverse phone directory. Enter phone number and area code into the provided search box of the directory and get all the fundamental details on the number.
Occasionally it happens that you want to get details about the owner of some particular phone number. Phone directory won't work because it contains phone details against owner's names. Therefore, phone directory is very useful tool for tracking the number against owner's name but can't help in finding information against phone numbers. For finding owner's details on any phone number you can browse reverse phone number directories. Select the reverse directory particularly designed for area code with which the number to be searched is registered.

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