Data package containing shapefiles for the US that may easily be restricted to only the contiguous US. Shapefiles are provided for; states, congressional districts and counties. All shapefiles have the resolution of 1:20,000,000 and are from the US Census Bureau - < https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html>. State/County/District information has been combined from multiple disjoint Census shapefile products in this package, see the 'shapefile_details' tibble for details. Please note, this package is explicitly designed to fit all shapefiles within one CRAN-hosted package. You will want to use the 'tigris' package for programmatic access to the US Census' shapefile products.