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A Postal Boundaries API

With our SaaS API, developers can seamlessly integrate GeoJSON or TopoJSON-formatted data for ZIP codes, counties, places, states, and neighborhoods into their solutions.

Our most popular feature is boundary combination, enabling complex geofencing use cases and advanced visualizations. GeoJSON response times are typically under 100 milliseconds for a single ZIP code, and you can query up to 1,000 U.S. ZIP codes in a single API call.

We handle millions of API calls each month, and the total annual revenue of our paying customers exceeds $20 billion USD. Our API is trusted to deliver dependable, round-the-clock service for mission-critical programs and applications..

As a SaaS solution provider, our backend services are spread out over multiple regions in the Cloud to guarantee high availability and performance.

API responses are encoded in GeoJSON by default, or in TopoJSON upon request, allowing seamless integration with websites, Google Maps, GIS systems, and other client applications. You can query up to 1,000 ZIP codes in a single API call.

Our data is processed and validated using private sources, as well as official data from the United States Census Bureau, USPS, and government agencies in the United Kingdom and Canada.

Over the past six years, we’ve served more than 4,000 clients across the United States, Canada, and the United Kingdom. Our API is used daily by organizations ranging from startups to industry leaders in marketing, emergency response, insurance, and transportation. These businesses trust our reliable API to power their solutions.

All subscription plans include 24/7 support and a guaranteed 99.9% uptime. You can view some of our existing clients using the API on Facebook.

Our award-winning API is also available on RapidAPI, where it has been validated and deployed. The platform includes code samples for popular programming languages such as Java, Node.js, and more.

Simple monthly pricing:

Free for 50 requests per day. ( 7 day trial )

$27.00 for 5,000 requests per day.

$55.00 for 20,000 requests per day.

$95.00 for 200,000 requests per day

Over 200,000 requests per day? No problem, please contact us for pricing!

Questions? Use our chatbox on the bottom right of the website for a quick response.

Click one of the links below for additional pricing information, code samples, and simple signup via Rapidapi:

United States

United Kingdom

Canada