U.S. ZIP codes are 5-digit, not 6-digit, and the number 157263 does not correspond to a valid postal code. Closest 5-digit matches include 15263 in Pennsylvania and 27263 in North Carolina, while "157263" otherwise appears as a data point in voter or, license records. For detailed information on specific ZIP code locations, visit MapQuest . Number of ZIP Codes - U.S. Postal Facts