How to validate the given address using USPS?

Question

I want to validate the given address (address, city, state, zip) to the USPS and return back the result if the provided address is a valid address. and if it is not the valid ad

Answer 1

The United States Postal Service (USPS) does offer this service via their Address Information APIs:

• USPS: Ecommerce APIs

Here's a Code Project article/library how you could use this services in .NET:

• United States Postal Service (USPS) Web Tools Wrapper

Note

• Before you can use this library, you will need to get a USPS Web Tools ID by filling out this form.

• To request the Address Informational APIs (Verify etc.) you need additional permissions. Also fill out this form to apply for these permissions.