| St. Charles | |
| Official Name: | Municipality of St. Charles Municipalité de St-Charles |
| Motto: | Fides Virtus Fortitudo |
| Settlement Type: | Municipality (single-tier) |
| Pushpin Map: | Canada Ontario |
| Pushpin Label Position: | top |
| Coordinates: | 46.35°N -105°W |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ontario |
| Subdivision Type2: | District |
| Subdivision Name2: | Sudbury |
| Government Type: | Town |
| Leader Title: | Mayor |
| Leader Name: | Paul Branconnier |
| Leader Title2: | Governing Body |
| Leader Name2: | St Charles Municipal Council |
| Leader Title3: | MP |
| Leader Name3: | Marc Serré (Liberal) |
| Leader Name4: | John Vanthof (NDP) |
| Established Title: | Incorporated |
| Established Date: | January 1, 1999 |
| Area Land Km2: | 314.46 |
| Population As Of: | 2021 |
| Population Total: | 1,357 |
| Population Density Km2: | 4.3 |
| Timezone: | EST |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Area Code: | 705 |
St. Charles is a town in the Canadian province of Ontario, located in the Sudbury District.
It was created on January 1, 1999, by the amalgamation of the incorporated townships of Casimir, Jennings, and Appleby, as well as a strip of unorganized territory on the West Arm of Lake Nipissing. Along with the municipalities of Markstay-Warren and French River, it is part of the region known as Sudbury East.[1]
The town had a population of 1,357 in the 2021 Canadian census. Franco-Ontarians, or Ontarians who speak French as their mother tongue, make up of the population.
In addition to the primary townsite at St. Charles, the municipality also includes the smaller communities of Casimir and West Arm.
In the 2021 Census of Population conducted by Statistics Canada, St.-Charles had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 314.46km2, it had a population density of in 2021.