What happened to the 1890 census for Ohio? Is there some reason it is not on Ancestry.com like 1880, 1900, 1910 etc?

Because the 1890 census was destroyed by fire at the Commerce Dept., in D.C. on 10 Jan 1921. Don

Thank you, Don for the answer. I had been curious about this!

"Because the 1890 census was destroyed by fire ..."

Well, not entirely. Ancestry has the fragmented remains of the 1890 federal census (including some Ohio records), along with the 1890 Veterans enumeration, as well as Ancestrys own "Census Substitute".

http://www.ancestry.com/search/rectype/default.aspx?rt=35

A friend of mine several years ago went into the library and asked for the 1890 census. When she was told what had happend, she exclaimed "but I need that." Don't we all. The 1890 census was the only one that was done differently than all the other census decades. There was a separate page for each family. For men, the WWI Draft Registrations can help a little bit. I wonder if different states took their own state census around that time. The state of Florida took an 1885 census and I saw one for the state of Iowa as well. If there are other states that did the same, it would be a big help to see that. As it is, we just have to bumble along without that very important census. Some states have early census records destroyed as well. The census records for the state of Georgia are missing until 1820. I am told that those were burned by the British. Not sure if that is correct or not but that is what I was told.