#1Cornell
Ontario · 22,014 peopleOverall A−·#510 of 2,556
Strongest: schools A+, health A·lowest: cost of living D
Cornell, #1 on this list · Photo: Loozrboy from Toronto, Canada (CC BY-SA 2.0)Markham · 2026
Neighbourhoods with the youngest residents in Markham
At the halfway mark stands Mount Joy, at 45.2 years. Last comes Langstaff, at 49.5 years. Nationally, Cornell ranks #500 of 2,589. Not one of Markham’s neighbourhoods reaches the top 100 for all of Canada. Nowhere in Markham does better on this list than Cornell, at 37.5 years. Box Grove is second (38.1 years) and Wismer Commons third (38.8 years).
Median age of residents, 2021 census (for a city’s neighbourhoods, estimated from five-year age groups) How grades work
#137.5 years Median age
#2Box Grove
Ontario · 25,496 peopleOverall A−·#503 of 2,556
Strongest: schools A+, health A·lowest: cost of living D
#3Wismer Commons
Ontario · 20,591 peopleOverall B+·#582 of 2,556
Strongest: schools A+, walkability A·lowest: cost of living D
All 22 neighbourhoods, ranked
Best first in Markham; beside each place, its rank on the same list for all of Canada.
22 neighbourhoods
#NeighbourhoodMedian ageCanada rankWhat drives it
1Cornell22,014 people37.5 years#500 of 2,589Strongest: schools A+, health A·lowest: cost of living D
2Box Grove25,496 people38.1 years#596 of 2,589Strongest: schools A+, health A·lowest: cost of living D
3Wismer Commons20,591 people38.8 years#716 of 2,589Strongest: schools A+, walkability A·lowest: cost of living D
4Berczy Village22,149 people39.7 years#881 of 2,589Strongest: schools A+, walkability A·lowest: cost of living D
5Cathedraltown11,029 people40 years#921 of 2,589Strongest: schools A+, hazard risk A·lowest: cost of living D
6Vinegar Hill19,543 people40 years#924 of 2,589Strongest: schools A+, walkability A·lowest: cost of living D
7Upper Cornell8,304 people40.3 years#977 of 2,589Strongest: schools A+, health A·lowest: cost of living C−
8Hagerman's Corners43,555 people40.5 years#1,028 of 2,589Strongest: schools A+, walkability A·lowest: cost of living D−
9Brown's Corners7,228 people40.5 years#1,030 of 2,589Strongest: schools A+, walkability A·lowest: cost of living D−
10Greensborough19,270 people40.7 years#1,045 of 2,589Strongest: schools A+, hazard risk A·lowest: cost of living D
11Steeles Corners9,468 people40.7 years#1,048 of 2,589Strongest: walkability A+, schools A+·lowest: cost of living D−
12Mount Joy8,345 people45.2 years#1,758 of 2,589Strongest: schools A+, health A·lowest: cost of living D
13Cachet6,361 people45.6 years#1,819 of 2,589Strongest: schools A+, hazard risk A·lowest: cost of living C−
14Underwood5,972 people45.6 years#1,822 of 2,589Strongest: walkability A, schools A·lowest: cost of living D−
15Quantztown13,146 people47.1 years#1,975 of 2,589Strongest: schools A+, hazard risk A·lowest: cost of living D
16Markham Village10,319 people47.3 years#2,012 of 2,589Strongest: schools A+, health A·lowest: cost of living D−
17Buttonville15,001 people47.3 years#2,013 of 2,589Strongest: schools A+, hazard risk A·lowest: cost of living C−
18Unionville17,632 people47.5 years#2,020 of 2,589Strongest: schools A+, hazard risk A·lowest: cost of living D
19Milliken12,138 people47.6 years#2,031 of 2,589Strongest: walkability A, hazard risk A·lowest: cost of living D−
20Thornlea20,872 people47.8 years#2,046 of 2,589Strongest: schools A+, walkability A+·lowest: cost of living D−
21German Mills11,923 people48.7 years#2,111 of 2,589Strongest: schools A+, health A·lowest: cost of living C−
22Langstaff8,147 people49.5 years#2,172 of 2,589Strongest: walkability A+, schools A·lowest: cost of living D−
Rankings
More lists for Markham
City by city
Youngest elsewhere
Photos: Cornell, Loozrboy from Toronto, Canada (CC BY-SA 2.0) · Box Grove, Silver Dovelet (CC BY-SA 3.0) · Wismer Commons, ChadPerez49 (CC BY-SA 3.0), via Wikimedia Commons.
Sources: TownRatings grades: our own summary of the data, ranking Canadian towns against each other only, run #73 of 10 November 2026. Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).