Select the year and the geographic layer (e.g., "States" or "ZIP Code Tabulation Areas") to generate a download link. Census Bureau Data
You can download these by state or for the entire nation from the Gazetteer Files or the Cartographic Boundary Files .
The official state boundary lines are available through the TIGER/Line Shapefiles . Download State Line zip
Many states provide their own localized ZIP downloads for higher accuracy. For example:
The Census Bureau uses , which are generalized representations of USPS ZIP code service areas. Select the year and the geographic layer (e
To download state lines and ZIP code boundaries, the provides the official geographic data in compressed ZIP files containing shapefiles or Gazetteer files. 1. State Line Boundaries
Offers a comprehensive Geographic Boundaries dataset that includes state and county boundaries. Many states provide their own localized ZIP downloads
The nationwide state boundary file for 2025 is available as tl_2025_us_state.zip .