The Church of Jesus Christ of Latter-Day Saints (LDS) have added the 1865 New York State census to their on-line collection.
The LDS is going to start indexing the whole New York State census of 1892. They haven’t started indexing as of yet but I found that they already have the census pages online.
The LDS have been indexing millions of records for the couple of few years. One of their newest projects is to index the entire 1892 New York State census.