|This area of Ontario is covered by Ontario County GenWeb. The information presented below is merely an outline of the county and does not include what is available for genealogical research for this area. For information on genealogical research of this area please visit Ontario County GenWeb.|
Ontario County was established in 1849 from York County but was not separate from York until 1853.
The county was dissolved in 1974 and "incorporated into Metropolitan Toronto, the Regional Municipality of Durham and the county of Simcoe on January 1, 1974."3
"Population 29,571 in 1852 and 135,895 in 1966."3
Ontario County was located in South-Western Ontario.
Prior to 1853 - part of York County
1974-present - Part of the Regional Municipality of Durham, Metropolitan Toronto, and Simcoe County
More maps of this area
Questions & Answers
1 Lovell's Gazetteer of British North America 1873
3 Place Names of Ontario by Floreen Carter, 1984
5 Place Names of Ontario by Alan Rayburn, 1997