shp_all_us_counties: Shapefiles detailing the Counties of the USA, designed for...
In statesRcontiguous: Shapefiles for the Contiguous United States of America

Description Usage Format Source Examples

An "sf" "data.frame" representing counties of the United States of America with 20m = 1:20,000,000 resolution, from www.census.gov.

1	shp_all_us_counties

Simple feature collection with 3233 features and 14 fields

county.name: County name
county.name.abbreviated: Abbreviated or commong county name
county.fp: County unique identifier
county.ns: GNIS IDfor county
state.fips: State FIP code
state.short.name: Two-character short name for state
state.name: State name
state.ns: GNIS ID for State
aff.geo.id: American Fact Finder Geo ID
geoid: Unknown identifier from Census
congressional.session: Congressional session (all identical)
contiguous.united.states: Is a member of the contiguous US? TRUE/FALSE
is.state: Is this Congressional District part of a recognised State? TRUE/ FALSE
state.region: Region the parent state belongs to
state.divison: Division the parent state belongs to
geometry: MULTIPOLYGON, defines the border of the Congressional District

http://www2.census.gov/geo/tiger/GENZ2016/shp/cb_2016_us_cd115_20m.zip

## Filter out only counties from the contiguous US
library("dplyr")
shp_contiguous_us_counties <- shp_all_us_counties %>%
 filter(contiguous.united.states)