When you add an address, the system ensures that it is a valid address, according to the U.S. Postal system. Validation ensures that addresses are real and meet the U.S. postal format. The system flags addresses that it cannot validate and allows you to save them to the database.
When it can validate an address, the system provides the following:
County
School district
Census tract
Geographical designations (county-specific)
The system does not validate foreign addresses.