Why can't I find the variable "dwsize" (dwelling size) in the online analysis tool?

I am trying to determine the average household size by industry type for each state. I can’t seem to get this to work in an extract, so I tried the online analysis tool but can’t find the variable, household size.

DWSIZE is only available for 1850-1930. Is it possible that you are looking at another year? I do get valid results when looking at DWSIZE in the online analysis tool for 1930, for examlpe.

If you are interested in post-1930 data, you may find the NUMPREC variable to be useful. Depending on your research, you might want to filter on GQ as well.