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  • Writer's pictureKaectm swonp

Address Lookup API

An address lookup API is a powerful tool for businesses to use to validate addresses quickly and easily. Whether you run a delivery service or an online retailer, an address lookup API can save you a lot of time. By using an address lookup API, you can get the data you need without coding and spending hours on your site. To get started, you can use a free service to add addresses manually. However, if you need to do more complex address lookups, you should consider using an address lookup API.



A good address lookup API will use a database maintained by the USPS. This database is the authoritative source for addresses in the US. To ensure accuracy, address data must be standardized. For example, converting the address string to lower case will eliminate any transposition or additional spaces. Additionally, the API should validate addresses for accuracy. To do this, developers can use a validation library, which is available on GitHub. However, address validation should always be performed before using an address lookup API.


The AddressSearchByName function locates an address by a specific name. By passing a forename and surname plus an optional address filter, you can drill down the hierarchy of matching items. You can then get the address either in its default format or with a formatted label. The three separate requests are used to retrieve the matched detail. The first request requests the address. The second one asks for address data. The third one retrieves the full address and any associated data.


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