Changes

This The approach below seems to have been superseded. However, it does look like it works if you choose the right data year -- 2012 ACS 1-year estimates -- seems to have all of the information needed.  One can download the PUMS data for 2017 here: https://www2.census.gov/programs-surveys/acs/data/pums/2017/1-Year/ And state-by-state, it looks possible to get the latest data profiles (2017 at present):https://www.census.gov/acs/www/data/data-tables-and-tools/data-profiles/ For just population: http://census.ire.org/data/bulkdata.html