For Manhattan/New York City Researchers
Ten years ago, FamilySearch indexed the surviving volumes of the 1890 New York City Police Census. The US Federal Census for 1890 was lost in a fire in 1921 making the New York City census an extremely valuable tool for New York City researchers.
I was a very active indexer on the project. All my paternal great grandparents were living in Manhattan at that time.
The New York City government was not happy with the tally of the Federal census and took their own in October 1890. It is known as the Police Census because NYC constables were charged with taking the census. https://www.familysearch.org/en/wiki/New_York,_New_York_City,_Police_Census,1890-_FamilySearch_Historical_Records
Unfortunately, the images for the digitized microfilm are restricted to view only at FamilySearch Center. But, happily, NYC has now digitized the census, in color, and it is available to view and download on the NYC Records website.
The color images are not indexed to be searchable, but you can use the index on FamilySearch to find the Volume Number you need; sometimes the page number is also included on the FS index.
The FamilySearch index of the census is
There is also a partial index, of just a few volumes, on Ancestry: https://www.ancestry.com/search/collections/3519/
The record set on the NYC Records website is 1890 New York City Police Census
On Tuesday, 18 February 2025, at 1 pm, Eastern US Time, the NYC Department of Records and Information (DORIS) will have an online presentation on "Digitizing the 1890 NYC Police Census." You can pre-register here: https://www.eventbrite.com/e/lunch-learn-digitizing-the-1890-nyc-police-census-tickets-1217984346969
Example: This is the index from FS of the record for my GGM, from County Tyrone, who was Kate Nelis at that time:
https://www.familysearch.org/ark:/61903/1:1:Q247-LFM9
This is the record image from the NYC Records site. Kate was a young widow with 2 babies, who are listed on the facing page:
I wish you search success and lots of fun with the newly-available color images.