Ontario Co., NY Books Cemeteries Census
Created: 1789 Maps Official Records Photos Population
Ontario Co., NY
Ontario Co., NY was formed from portions of Montgomery Co.
You might consider searching in that County for earlier records.
Population
The following table details the population of the County from the first census available up through 1940.
Information is shown for 1890, but that census was mostly lost due to a fire and mishandling in the 1920's and 1930's.
Don't forget to check on the main New York page for links to free online versions of the census
1790 1,074 1800 15,218 1810 42,032 1820 88,267 1830 40,288 1840 43,501 1850 43,929 1860 44,563
1870 45,108 1880 49,541 1890 48,453 1900 49,605 1910 52,286 1920 52,652 1930 54,276 1940 55,307
Historical Census Browser. The University of Virginia, Geospatial and Statistical Data Center: http://mapserver.lib.virginia.edu

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Books
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Cemeteries
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Census Records
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Official Records
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Ontario Co., NY Government Offices Contacts
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Birth, Death, Marriage and Estate Records
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Real Estate Transaction Records
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email Updated 9/14/2015
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