The tables that this page leads to give the exchanges in use in the city of Philadelphia, Pa. for the period between the start of dial-oriented listings and the change in July 1946 from three-letter to two-letter-one-digit exchanges. For the exchanges after July 1946, please see the section of this website devoted to the post-1946 Philadelphia exchanges.
|Alphabetic table of exchange names|
|Numeric table of exchange names|
|The Philadelphia metropolitan region and subdivisions:|
|The Philadelphia metropolitan region|
|Bell Telephone Company of Pennsylvania:|
|Philadelphia, Pa. (city)||Philadelphia, Pa. (inner suburban)||Outer parts of the 215 area|
|Early dial period||Late dial period||Early dial period||Late dial period|
|Philadelphia (Keystone) data:|
|Keystone Telephone Company exchanges|
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Last modified August 27, 2015.