USPS now offers official ZIP Code boundary polygons through its USPS® ZIP Code Boundaries product. This national map uses USPS delivery address and location data to ensure accurate boundaries, which fluctuate temporally based on changing delivery distribution for new or changed locations.
Industries such as mapping, mailing, marketing, insurance, real estate, logistics, navigation, and transportation can benefit. The polygons serve as ground truth for ZIP Code boundaries, enabling users to incorporate them as joint features or correct existing data. They also act as a proxy for delivery location groupings for optimized routing and a support structure for demographic data in real estate and insurance.
Three tiers are available: Internal (four quarterly updates), Enterprise (four quarterly updates with limited distribution to subsidiaries and partners), and Publication (four quarterly updates with limited publication). Each tier provides regular updates to reflect boundary changes.
Source: Hacker News · Summarized by HeadlinesBriefing