The data comes from the American Community Survey (ACS). The variables are total population and median household income.
get_tract_demographics(
state_name,
county_fips = NULL,
endyear = 2013,
span = 5
)
The name of the state. See ?state.regions for proper spelling and capitalization.
An optional vector of county fips codes within the state. Useful to set because getting data on all tracts can be slow.
The end year for the survey
The span of the survey