USAboundaries0.5.1 package

Historical and Contemporary Boundaries of the United States of America

USAboundaries-package

USAboundaries: Historical and Contemporary Boundaries of the United St...

us_zipcodes

Zip Code Tabulation Areas (contemporary)

check_data_package

Check whether to install USAboundariesData and install if necessary

install_USAboundariesData

Install the USAboundariesData package after checking with the user

state_plane

Projections from the State Plane Coordinate System

us_cities

City locations and populations (historical and contemporary)

us_congressional

Congressional district boundaries (contemporary)

us_counties

County boundaries (contemporary and historical)

us_states

State boundaries (contemporary and historical)

Download source packageRead PDF manual

The boundaries for geographical units in the United States of America contained in this package include state, county, congressional district, and zip code tabulation area. Contemporary boundaries are provided by the U.S. Census Bureau (public domain). Historical boundaries for the years from 1629 to 2000 are provided form the Newberry Library's Atlas of Historical County Boundaries (licensed CC BY-NC-SA). Additional data is provided in the USAboundariesData package; this package provides an interface to access that data.

  • Maintainer: Jacci Ziebert
  • License: MIT + file LICENSE
  • Last published: 2026-01-29

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