105zip Official

: Represents a broad geographic region. For 55105, the "5" signifies states in the Midwest, including Minnesota, Iowa, and Wisconsin .

: Identify a central post office or processing facility (e.g., "51" for the Saint Paul region). 105zip

The "Zone Improvement Plan" (ZIP) system was launched by the USPS in 1963 to streamline mail delivery. : Represents a broad geographic region

: It is bordered by other notable Saint Paul ZIP codes including 55104, 55116, and 55102. 📮 Understanding ZIP Codes and 55102. 📮 Understanding ZIP Codes