Address Format Guidelines


Accurately formatting postal addresses is crucial for successful delivery.


Important Notes

  • Only include addresses that have a postal code, as this ensures the address can be used for mailing.
  • For addresses in the USA, use state abbreviations. Refer to  this guide for abbreviations .
  • If an address includes a P.O Box, write it exactly as "P.O Box XXXXX" to maintain clarity and accuracy.

If you do not want to source the postal addresses yourself, we offer this an an optional add-on service. Please contact  barry@leadable.io  if you would like to learn more.




For USA Addresses

Address 1: This should contain the street / building name or number.
Address 2: Include specifics like room number, suite number, etc., that are closest to the person.
City: Always include the city name.
State/Province: Use the standard two-letter postal abbreviation instead of the actual state name. We cannot process an item unless we have this. Please refer to  this guide for abbreviations .
Zip/Postal Code: Always include the zip code.
Country Code: Always use "US" instead of "United States" or "USA."



For UK Addresses

Address 1: Include the most specific part of the address closest to the person. This could be the room or office number, house/flat number, building name, or street name/number, in order of preference and availability.
Address 2: Include the next most specific part of the address. This usually consists of the building name, block number, area name, or street name, in order of preference and availability.
City (REQUIRED): Always include the city name. If not initially provided, find this information using Google Maps or databases like Apollo or ZoomInfo.
State/Province: Include if applicable.
Zip/Postal Code: Always include the post code.
Country Code: Use"United Kingdom" in all cases.