USAboundaries: Historical and Contemporary Boundaries of the United States of America

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.

Version:	0.5.1
Depends:	R (≥ 3.5)
Imports:	cli
Suggests:	covr, dplyr, knitr, leaflet, pak, rmarkdown, sf (≥ 1.0.0), testthat (≥ 3.0.0), tibble, USAboundariesData (≥ 0.5.0)
Published:	2026-01-29
DOI:	10.32614/CRAN.package.USAboundaries
Author:	Lincoln Mullen [aut], Jordan Bratt [aut], United States Census Bureau [cph], Jacci Ziebert [cre]
Maintainer:	Jacci Ziebert <jacciziebert at gmail.com>
BugReports:	https://github.com/ropensci/USAboundaries/issues
License:	MIT + file LICENSE
URL:	https://docs.ropensci.org/USAboundaries/, https://github.com/ropensci/USAboundaries
NeedsCompilation:	no
Additional_repositories:	https://ropensci.r-universe.dev
Citation:	USAboundaries citation info
Materials:	README, NEWS
CRAN checks:	USAboundaries results

Documentation:

Reference manual:	USAboundaries.html , USAboundaries.pdf
Vignettes:	Getting Started (source, R code)

Downloads:

Package source:	USAboundaries_0.5.1.tar.gz
Windows binaries:	r-devel: USAboundaries_0.5.1.zip, r-release: not available, r-oldrel: USAboundaries_0.5.1.zip
macOS binaries:	r-release (arm64): USAboundaries_0.5.1.tgz, r-oldrel (arm64): USAboundaries_0.5.1.tgz, r-release (x86_64): USAboundaries_0.5.1.tgz, r-oldrel (x86_64): USAboundaries_0.5.1.tgz
Old sources:	USAboundaries archive

Linking:

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