Why do I receive so many data files in my downloaded zipped file?
Why extract returns multiple files even though one variable, one year, one dataset?
A tabular data file is returned for each dataset, geographic level, and year for which tables are selected. If you only downloaded county level data for one year and from one dataset, you will only receive one data file. If your data extract request was more expansive, however, you can expect more data files. For example, selecting data from 1940 and 1950 at the state and county geographic levels, you would receive four data files (1940 state, 1940 county, 1950 state, 1950 county).