Core-based statistical areas include both metropolitan areas and micropolitan areas. The US Census Bureau defines these areas as follows: "A metro area contains a core urban area of 50,000 or more population, and a micro area contains an urban core of at least 10,000 (but less than 50,000) population. Each metro or micro area consists of one or more counties and includes the counties containing the core urban area, as well as any adjacent counties that have a high degree of social and economic integration (as measured by commuting to work) with the urban core." Please see the link provided for more information
core_based_statistical_areas(cb = FALSE, resolution = "500k", year = NULL, ...)If cb is set to TRUE, download a generalized (1:500k) cartographic boundary file. Defaults to FALSE (the most detailed TIGER/Line file).
The resolution of the cartographic boundary file (if cb == TRUE). Defaults to '500k'; options include '5m' (1:5 million) and '20m' (1:20 million).
the data year; defaults to 2022
arguments to be passed to internal function load_tiger, which is not exported. See Additional Arguments.
Additional arguments that can be passed in ... are:
class Desired class of return object: "sf" (the default) or "sp". sp classes should be considered deprecated as of tigris version 2.0, but legacy support is still available.
progress_bar If set to FALSE, do not display download progress bar (helpful for R Markdown documents). Defaults to TRUE.
keep_zipped_shapefile If set to TRUE, do not delete zipped shapefile (stored in temporary directory or TIGRIS_CACHE_DIR
depending on the configuration of global option "tigris_use_cache"). Defaults to FALSE.
refresh Whether to re-download cached shapefiles (TRUE or FALSE) . The default is either FALSE or the value of global
option "tigris_refresh" if it is set. Specifying this argument will override the behavior set in "tigris_refresh" global option.
filter_by Geometry used to filter the output returned by the function. Can be an sf object, an object of class bbox, or a length-4 vector of format c(xmin, ymin, xmax, ymax) that can be converted to a bbox. Geometries that intersect the input to filter_by will be returned.
https://www.census.gov/programs-surveys/metro-micro.html
Other metro area functions:
combined_statistical_areas(),
metro_divisions(),
new_england(),
urban_areas()