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0 pointsmsla1y ago0 comments

For the American case, the USPS has a free API to do address validation and standardization.

USPS APIs in general:

https://www.usps.com/business/web-tools-apis/#dev

https://www.usps.com/business/web-tools-apis/documentation-u...

The specific API:

https://www.usps.com/business/web-tools-apis/address-informa...

0 comments

michaelcampbell1y ago

FWIW, I've used this API for some years. On the con side, it uses XML, but on the pro side, it's fast, reliable, and consistent. And free, at least for my volumes.

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