Markdale | |
|---|---|
 Historic fire station in Markdale | |
| Country | Canada |
| Province | Ontario |
| County | Grey County, Ontario |
| Municipality | Grey Highlands, Ontario |
| Time zone | UTC−5 (EST) |
| • Summer (DST) | UTC−4 (EDT) |
| Forward sortation area | |
| Area code(s) | 519, 226, 548 |
| Highways |  Highway 10 |
Markdale is a community in the Municipality of Grey Highlands, in Grey County, Ontario, Canada. The population was 1,216 in 2016, an increase of 3.5% from 1,175 in 2011. In 2016, the average age of the population was approximately 43 years old.