About Zipcodebase - Free Zip Code API
Zipcodebase is a zip code API that was founded in 2019 to solve common issues with postal code data. As we have launched geocodeapi.io, a general geocoding API for forward and reverse geocoding, we learned from our customers, that that there was a specific need for zip code data. Our customers were basically looking for a simple solution to do tasks:
- calculate the distance between zip codes
- find zip codes around a given zip code
- find a major location behind a zip code
- match together a list of zip codes by their distance to each other
This was the moment we decided to launch zipcodebase.com, a feature-complete zip code API.
The API uses keys to allow access to the API. You can register a free API key at our developer portal. This will allow you to conduct 10,000 free searches per month.
To provide you with the best developer experience possible, we also created a Postman collection covering all of our endpoints.
Endpoints & Examples
(All links can be copied to your browser for testing, simply replace "YOUR-APIKEY", with your personal key)
postal code to location information
This endpoint allows you to receive information for one or multiple given postal codes.
distance calculation between postal codes
This endpoint allows you to calculate the distance between one and another (or multiple) postal codes.
postal codes within a radius
This endpoint will convert a list of submitted postal codes into a list of postal code pairs that are located within a given distance to each other.
postal codes within a certain distance
This endpoint returns a list of postal code pairs that are within a given distance to each other.
postal codes by city
This endpoint returns a list of postal codes based on a city.
postal codes by state
This endpoint returns a list of postal codes based on a state.
Our full documentation can be found here: https://app.zipcodebase.com
Do not hesitate to contact our support team that will help to get you started.
The use of zipcodebase API is subject to our terms & conditions.