1870 New York City, New York & Long Island Census Index Please enable JavaScript in your browser to complete this form.Please enable JavaScript in your browser to complete this form.Your Email *EmailConfirm EmailFull Name You Want Searched *Helpful InformationSubmit This index indexes about 500,000 census records from the five counties that made up New York City in 1870: Kings, New York, Queens, Richmond, and Suffolk. Explore your ancestry with a free trial!