Here is the directory sorted by counties, districts and regions

Algoma Brant Bruce Chatham-Kent Cochrane Dufferin Durham Elgin Essex Frontenac Grey

Haldimand Haliburton Halton Hastings Huron Kenora Lambton Lanark Leeds and Grenville Lennox and Addington Manitoulin

Middlesex Muskoka Niagara Nipissing Norfolk Northumberland Outside Ontario Oxford Parry Sound Peel Perth Peterborough

Prescott and Russell Prince Edward Rainy River Renfrew Simcoe Stormont, Dundas... Sudbury Thunder Bay Timiskaming Waterloo Wellington York

Here is the directory sorted by cities.

Here is the directory sorted by towns and other municipalities.

If the Ontario county, district, region, city, town, township, municipality or village you are searching for does not appear in either of these three directories, then it does not have any Ontario Historical Plaques.