Welcome to the US Zip Code Data Service API, designed to provide accurate and comprehensive information based on latitude and longitude coordinates. Explore the following endpoints to enhance your data retrieval experience:

1. Zip Code Data

Retrieve detailed information about specific zip codes.

2. List of States

Access a comprehensive list of the 50 states in the United States, including the District of Columbia.

Note: The District of Columbia is included in the list to ensure complete data coverage.

3. List of Counties by State

Obtain a list of counties within a specific state by providing the state name.

4. Validate Zip Code

Ensure the validity of a given zip code.

5. Distance Calculation

Calculate the distance between two sets of latitude and longitude coordinates or two zip codes.

6. Nearby Zip Code Data

Retrieve nearby zip code information based on either location coordinates or a set of zip codes.

Note: When querying the “states” endpoint, you will receive a list of 51 items. This includes all 50 states and the District of Columbia to ensure comprehensive data coverage.

We hope this API enhances your geospatial data needs. If you have any questions or need further assistance, refer to our documentation or contact our support team.