Grey Highlands is a municipality in the southeast corner of Grey County, Ontario, Canada.
It was formed on January 1, 2001, by the amalgamation of the Village of Markdale and the Townships of Artemesia, Euphrasia and Osprey, which included the unincorporated hamlets of Eugenia, Ceylon, Maxwell, Singhampton, Priceville, Kimberley, Badjeros, and Feversham. The former village of Flesherton is also located within the municipality and was amalgamated with Artemesia Township in 1998.
The dominant natural feature of the area is the Niagara Escarpment, which passes through the municipality and has several ancillary features:
In the 2021 Census of Population conducted by Statistics Canada, Grey Highlands had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.
In the 2016 census, the municipality covered a land area of and had a population of 9,804. The municipality had a healthy population growth, and its average age (43 years old) is close to that of the provincial average (41 years old). The average household size was 2.5, and the average total income of all households is $94,000. The average after-tax income of households in the municipality was $77,000.
Elementary students (kindergarten to grade 8) are divided into three catchment areas:
All of those students go to Grey Highlands Secondary School in Flesherton for Grades 9 to 12.