Best Address Lookup and Validation APIs

List of the top address validation APIs and services to make sure street and postal addresses exist!

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Address Validation API

About address validation APIs

Verify if an address is accurate and standardized with validation APIs.

What is an address validation API?

An address validation application programming interface (API) is a RESTful web service that confirms and standardizes postal addresses. The API may also provide latitude and longitude coordinates (geocoding) for addresses and landmarks.

How does an address validation API work?

Address validation APIs use GET and POST request methods to retrieve and return responses in JavaScript Object Notation (JSON) or Extensible Markup Language (XML) format. The API for address validation checks an official database to verify the address. If it is found in the database, it’s considered valid.

Who is an address validation API for?

An API for address validation is for developers who want to create applications with the functionality of validating addresses and formatting them to match the approved address format put forth by the United States Post Office (standardization).

Delivery companies, online retailers, and other types of businesses that deliver products and send mailings to customers will also find applications embedded with address lookup APIs helpful.

Why is an API for address validation important?

Developers save time coding and debugging when they integrate an API for address validation into their applications. The alternative way to add that functionality would be to manually parse data, find missing address fields, and then standardize each address in the database to confirm it matches postal formatting.

Businesses that utilize applications with free address lookup APIs will be able to validate thousands of addresses per second. Zipcodes are checked for accuracy as well as street name abbreviations. Speedy address checking and accuracy confirmation can help businesses send out their products and mailings on schedule.

What can you expect from address validation APIs?

When they use APIs for address validation, developers can launch their applications that feature address validation functionality much faster.

Businesses can look forward to increasing productivity and reducing the incidents of sending deliveries to wrong addresses. This is especially helpful to businesses when the applications are embedded with free address validation APIs.

Are there examples of free address validation APIs?

RapidAPI’s Marketplace lists free address lookup APIs. Address Verify and Geocode by Everything Location validates for more than 240 countries. Byteplant Postal Address Online Validator by Byteplant verifies and removes obsolete addresses.

Best Street Address Validation APIs

Many websites and mobile applications require their users to submit valid street addresses in their software. However, it’s tough to know if users are using their real or fake addresses. Using the APIs in this collection, developers can confirm and verify the existence of user-submitted street and postal addresses.

Lookup and Validation API SDKs

All lookup and validation APIs are supported and made available in multiple developer programming languages and SDKs including:

  1. Node.js
  2. PHP
  3. Python
  4. Ruby
  5. Objective-C
  6. Java (Android)
  7. C# (.NET)
  8. cURL

Just select your preference from any API endpoints page.

Sign up today for free on RapidAPI to begin using Lookup and Validation APIs!