- 
  
    FederalTIGER/Line Shapefile, 2018, nation, U.S., Current County and Equivalent National ShapefileU.S. Census Bureau, Department of Commerce — The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master...
- 
  
    Federal2015 Cartographic Boundary File, State-Alaska Native Regional Corporation for Alaska, 1:500,000U.S. Census Bureau, Department of Commerce — The 2015 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File /...
