<page_title> List of census divisions of Ontario </page_title> <section_title> Counties </section_title> <table> <cell> Wellington County <col_header> Census division </col_header> <col_header> Bruce County </col_header> <col_header> Dufferin County </col_header> <col_header> Elgin County </col_header> <col_header> Essex County </col_header> <col_header> Frontenac County </col_header> <col_header> Grey County </col_header> <col_header> Haliburton County </col_header> <col_header> Hastings County </col_header> <col_header> Huron County </col_header> <col_header> Lambton County </col_header> <col_header> Lanark County </col_header> <col_header> United Counties of Leeds and Grenville </col_header> <col_header> Lennox and Addington County </col_header> <col_header> Middlesex County </col_header> <col_header> Northumberland County </col_header> <col_header> Perth County </col_header> <col_header> Peterborough County </col_header> <col_header> United Counties of Prescott and Russell </col_header> <col_header> Renfrew County </col_header> <col_header> Simcoe County </col_header> <col_header> United Counties of Stormont, Dundas and Glengarry </col_header> </cell> <cell> Southwestern <col_header> Secondary region </col_header> <row_header> Wellington County </row_header> </cell> </table>
Wellington County is located in Southwestern Ontario.