API Identification for U.S. County, City, and ZIP Code Data Retrieval Based on Application Flow Requirements

Question

• Identify appropriate free and open-source APIs to support the required functionality.

• Prioritize APIs available through Google Cloud; if unavailable, identify suitable alternatives.

• Ensure selected APIs provide reliable search functionality and return accurate data responses.

API Identification Based on the Flow. 

1. Get All Counties in the U.S.

Requirement : Retrieve a complete list of all counties within the United States.

API Requirement:

An API that returns all U.S. counties, preferably with their corresponding state information.

 

2. Get Cities by Selected County

Requirement : Retrieve a list of cities that belong to a specific U.S. county.

API Requirement

An API that accepts a county (and optionally, the state) as a parameter and returns a list of cities located within that county.

3. Get Zip Codes by Selected City

Requirement : Retrieve all zip codes under a selected U.S. city.

 

API Requirement

An API that accepts a city name (and optionally, the state) and returns associated zip codes.