Missing Block Group data in ACS 2013-2017 text files downloaded from the FTP site

I am noticing missing values for Block Groups in several tables including Internet and computer availability and usage tables in the downloadable data files in the csv format from the Census Bureau's FTP site. However, when looking at the same tables on data.census.gov, there is data at the Block Group level. I am looking at 2013-2017 ACS tables. Not sure why the data that is available on data.census.gov is not available in files on FTP. Can someone let me know what the reason may be and how I can get the bulk data without going through' data.census.gov?

Thank you.

  • I have R code that uses the API to download a single table (or PUMS data ) for a single geography.  The 3 sources API, ftp and data.census.gov don't always produce the same thing.  Especially the PUMS data and missing values.