These airport locations were provided by the TIGER/Line data of the 2010 United States Census. The airports have been clipped from their national dataset to include only airports within the boundary of the Regional Resources Inventory. TIGER/Line®Shapefiles are spatial extracts from the Census Bureau's MAF/TIGER database, containing features such as roads, railroads, rivers, as well as legal and statistical geographic areas. They are made available to the public for no charge and are typically used to provide the digital map base for a Geographic Information System or for mapping software. They are designed for use with geographic information system (GIS) software. The TIGER/Line®Shapefiles do not include demographic data, but they contain geographic entity codes that can be linked to the Census Bureau’s demographic data, available on American FactFinder