ZIP Code and Postal Boundaries

Rely on updated ZIP Code tables listing all unique U.S. ZIP Codes boundaries and points to improve your geocoding.

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The most complete ZIP Code Boundaries for the U.S.

ZIP Code and Postal Boundaries include all names and spatial demarcations of postal ZIP Codes polygons for the entire United States and the latitude/longitude coordinate of the centroid of each ZIP code, including point-type ZIPs such as post-office (PO) boxes.

It also provides other relevant attributes, such as population detail and demographic statistics within a specific ZIP Code. Polygons are created from multiple data sources, such as carrier route boundaries, making the product the most complete dataset of its kind.

Benefits and functionalities of ZIP Code and
Postal Boundaries


  • Offers a quick view of specific ZIP Code changes for each version.
  • Provides a complete ZIP Code table allowing for more precise geocoding.
  • Features all names associated with a particular ZIP code in a separate table allowing for quicker geocoding and a better hit rate in the main ZIP code boundary file.
  • Provides CASS-certified data, imported monthly.
  • Delivers scored segments based on match rates.
  • Includes cleanly embedded areas, without jagged fence posting.


  • Assess property inventory, vacancy rates, rental rates, and absorption rates.
  • Determine demographic composition, income, age, unemployment, and regional industry composition.
  • Facilitate trade area analysis and site selection.
  • Identify tax implications of housing districts.
  • Identify environmentally sensitive areas.

The best ZIP Code and postal coverage there is

Where there are no carrier routes in an area, ZIP Code boundaries are extended to ensure continuous coverage for the entire United States. In all cases where there are carrier routes, ZIP Codes share a boundary with each.

When there is insufficient data to create ZIP Code polygons in an area, Precisely creates temporary ZIP Code areas with the three-digit ZIP prefix and a two-letter suffix, either MH for an area surrounded by water or MX for an area surrounded by land.

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