Oak Ridge National LaboratoryUnited States. Department of DefenseLandScan USA Population Database 2021 provides estimated population counts at 3 arc-second resolution for Nighttime and Daytime, for the contiguous United States, Hawaii, Alaska, American Samoa, Guam, Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands. Residents, Prisoners, Workers, Students, and Shoppers are modeled. These are baseline population estimates, which do not include transitory populations such as business travelers and tourists.GeoTIFF88-0001_us_2021engOak Ridge National LaboratoryPublicPopulationLandScan USA {2021}DatasetsUnited States2021