Perth-Wellington consists of Perth County and the North West townships of Wellington County:

Perth County                                                                         Wellington County

The Municipality of North Perth                                               The Township of Mapleton 

The Municipality of West Perth                                                The Township of Wellington North

The Township of Perth East                                                      The Town of Minto

The Township of Perth South


Municipalities within Perth County                             Map of Perth–Wellington     

The City of Stratford

The Town of St. Marys