Ancestry.com now includes the above-named databases. They give you a shot at finding limited information about persons in census years that have not yet been released to the public. Database entries consist mostly of city directory listings. What this means is that your odds of finding an ancestor you seek in one of these databases are greatly improved if that ancestor was an adult wage-earner who lived in a medium-sized to large-sized city:
Note No. 1: Successful searches return an image of the city directory page on which your ancestor’s name appears.
Note No. 2: Ancestry.com also provides a database that it calls the 1890 Census Substitute. This database is useful because most of the 1890 federal census was destroyed in a 1921 fire. This database also consists largely of city directory listings, but does provides access to voter lists for some localities.