Timmins ( TIM-ins) is a city in northeastern Ontario, Canada, on the Mattagami River. The city is the fourth-largest city in the Northeastern Ontario region with a population of 41,788 (2016). The city's economy is based on natural resource extraction and is supported by industries related to lumbering and to the mining of gold, zinc, copper, nickel and silver. Timmins serves as a regional service and distribution centre. The city has a large Francophone community, with more than 50% bilingual in French and English.