Metropolitan area codes: 1963-1967

00001
New York, NY
00002
Chicago, IL
00003
Philadelphia, PA
00004
Los Angeles, CA
00005
Detroit, MI
00006
San Fransisco, CA
00007
Boston, MA
00008
Cleveland, OH
00009
St. Louis, MO-IL
00010
Pittsburg, PA
00011
Washington, DC-MD-VA
00012
Baltimore, MD
00013
Houston, TX
00014
Minneapolis-St. Paul, MN
00015
Buffalo, NY

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