pro.perty.id’s location directory is built from public open-data sources. We’re grateful to:
GeoNames
City, town, and administrative-region data is from the GeoNames geographical database, licensed under Creative Commons Attribution 4.0 (CC BY 4.0). © GeoNames.
IPEDS / NCES
U.S. college and university directory data is from the Integrated Postsecondary Education Data System (IPEDS), U.S. Department of Education, National Center for Education Statistics — a public-domain U.S. government dataset.