ZIP Code Look-Up
Note: Use of this resource is restricted to current University of Pittsburgh faculty, students, and staff, and may be used for individual research purposes only. Any other use is prohibited.
The ZIP Code Look-Up and City/State/ZIP Code Association are free services provided by the USPS to assist the public with their addressing needs. These services are being updated and reviewed daily for more accurate retrieval data. Some large metropolitan areas require the entry of a best guess 5-digit ZIP code to retrieve the most accurate ZIP+4.
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