Find Your Local DSO
There are nine Developmental Services Ontario agencies across the province. To find the right agency for your region, click on the "Find Your DSO" search box then enter your postal code, or look it up in the list on this page.
If you're still not sure which agency to contact, don't worry! By calling any of the DSO offices, you can speak to a staff member who will be able to give you the right number for your region.
OPTION 2: FIND BY COUNTY / REGION
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DSO Central East Region
Durham,
Haliburton,
Kawartha Lakes,
Northumberland,
Peterborough,
Simcoe,
York
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DSO Central West Region
Dufferin,
Halton,
Peel,
Waterloo,
Wellington
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DSO Eastern Region
Ottawa Region,
Prescott-Russell,
Renfrew,
Stormont, Dundas & Glengarry
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DSO Hamilton-Niagara Region
Brant,
Haldimand-Norfolk,
Hamilton,
Niagara
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DSO North East Region
Cochrane,
Muskoka,
Nipissing,
Parry Sound,
Timiskaming
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DSO Northern Region
Algoma,
Kenora,
Manitoulin,
Rainy River,
Sudbury,
Thunder Bay
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DSO South East Region
Frontenac,
Hastings,
Lanark,
Leeds & Grenville,
Lennox & Addington,
Prince Edward
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DSO South West Region
Bruce,
Chatham-Kent,
Elgin,
Essex,
Grey,
Huron,
Lambton,
Middlesex,
Oxford,
Perth
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DSO Toronto Region
Etobicoke, North York, Scarborough, Toronto
