A dataset containing mappings between ZIP codes and congressional districts
zip_to_cdA data frame with 45914 rows and 2 variables:
5 digit U.S. ZIP code
Four digit congressional district code (State FIPS code + district number)
This is the exact pre-2020 HUD-USPS-derived mapping shipped in zipcodeR 0.3.5. It is frozen for legacy reproducibility and should not be interpreted as a current redistricting vintage. Current authoritative ZCTA relationships are available in explicit data bundles.