USPS offers official ZIP Code boundary polygons
The gist
USPS posted briefing sheets, guides and sample files for its ZIP Code Boundaries product.
Critics say ZIPs are delivery routes, not map shapes.
How it unfolded
- 1963The ZIP (Zone Improvement Plan) system was introduced by the US Postal Service.
- Jun 30, 2026USPS posted an Electronic Product Fulfillment Web Access Request Form.
- Sep 18, 2026USPS posted featured resources for ZIP Code Boundaries, including a briefing sheet, technical guide, sample file, GeoJSON sample file, license agreement and order form.
Key terms
- polygons
- A plane figure made of line segments connected end to end to form a closed shape.
Source: Wikipedia