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  • Writer's pictureHisma Labia

USPS API and Address Validation

Using the USPS API and address validation is a good way to save time and money. It can also be a way to make your delivery process easier and more convenient. However, there are some things you need to know before you use this service.



Using the USPS API and address validation, you can check addresses for typographical errors and standardize them. This will make them easier to read and use. However, you should be aware that the USPS does not provide guarantees that addresses are valid or correct. Incorrectly formatted addresses can lead to errors when mailing or shipping, or can cause customer losses.


The USPS maintains a massive address database. This database includes a variety of information, including business addresses, residential addresses, time zones and daylight savings. It can also provide information on carrier case sequences and latitude and longitude.


The USPS API is not designed for use in record management or database cleansing. Instead, the USPS API is designed for simple address validation requirements.


The API will validate addresses against the USPS address database and generate a response. The response will contain an address and any necessary corrections to the address. The address will include a standardized address, a two-digit delivery point, and other information. It will also indicate how the address was derived from the normalized address.


The USPS API and address validation are free to use. However, you must have an account. You can register for a free account.


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