FEMA NPP 50-Mile Population Density

SecPop calculates estimated population and economic data around any point specified by latitude and longitude. The Nuclear Regulatory Commission (NRC) adopted SecPop to perform siting reviews for nuclear power-plant construction and license applications within the continental United States. SecPop Version 4.3.0 represents the current version, utilizing 2010 census data and 2007 economic data, which is the most recent available. At the same time SecPop 4.3.0 was created to be compatible with 2000 census and 2002 economic data. SecPop 4.3.0 supports site analysis, which evaluates population, land use, and economic data on a polar grid centered on a prescribed site. Population estimates are made using block level census data and economic estimates are made using county level data.