Current Ontario Counties, Districts, and Municipalities

Counties

Bruce· Dufferin· Essex· Frontenac· Grey· Haliburton· Hastings· Huron· Lambton· Lanark· Leeds and Grenville· Lennox and Addington· Middlesex· Northumberland· Perth· Peterborough· Prescott and Russell· Reffrew· Simcoe· Stormont, Dundas and Glengarry· Wellington

Districts

Algoma· Cochrane· Kenora· Manitoulin· Nipissing· Parry Sound· Rainy River· Sudbury· Thunder Bay· Timiskaming

Regional municipalities

Durham· Halton· Muskoka· Niagara· Oxford· Peel· Waterloo· York

Single-tier municipalities

Brant· Brantford· Chatham-Kent· Greater Sudbury· Haldimand· Hamilton· Kawartha Lakes· Norfolk· Ottawa· Prince Edward· Toronto

Separated municipalities

Barrie· Belleville· Brockville· Gananoque· Guelph· Kingston· London· Orillia· Pembroke· Peterborough· Prescott· Quinte West· Smiths Falls· St. Marys· St. Thomas· Stratford· Windsor