This R code generates the Harmonized Historical ACS Measures (hh_acs_measures
) data resource. Census tract-level measures derived from the American Community Survey (ACS) are generally available annually from 2013 through 2021 and were selected to cover three domains:
See metadata.md for detailed metadata and schema information.
Read this CSV file into R directly from the release with:
readr::read_csv("https://github.com/geomarker-io/hh_acs_measures/releases/download/v1.1.0/hh_acs_measures.csv")
Metadata can be imported from the accompanying tabular-data-resource.yaml
file by using {codec}.
codec::codec_data("hh_acs_measures")
Each of the derived ACS measures are expressed in one of three ways:
n_
represent a number of something, such as n_household
fraction_
represent a fraction of some total, such as fraction_poverty
median_
represent a median of a number in a population, such as median_income
Measures that are reported in US Dollars (e.g., Median Household Income) are adjusted for changes in purchasing power over time by using the annual Consumer Price Index
Some data are unavailable in certain earlier years because the question was not included in the ACS that year. Additionally, data summaries may be suppressed by the census bureau.
Each measure includes a accompanying margin of error (or _moe
) variable, such as median_income_moe
, that is calculated using the ACS’s suggested methodology implemented in tidycensus.