Middlesex County has eight incorporated municipalites: Adelaide Metcalfe, Lucan Biddulph, Middlesex Centre, Newbury, North Middlesex, Southwest Middlesex, Strathroy-Caradoc, and Thames Centre. There are also three reservations of the First Nations in the county: Chippewas of the Thames 42, Munsee-Delaware 1, and Onedia 41.