City of Markham Open Data publishes 540 open datasets for Canada. Browse them live in Vizzie and turn any one into a map or chart.
City of Markham Open Data is the open-data portal for Canada, covering Ontario. It runs on ArcGIS Hub, Esri's open-data platform for geographic data. You can browse it directly at data-markham.opendata.arcgis.com.
On City of Markham Open Data, a majority of datasets here declare no licence at all. It's important to know that "no licence declared" is not the same as public-domain or free-to-use. Undeclared data carries no explicit permission to copy, adapt, or redistribute it — so reusers should treat it cautiously and check with the publisher before relying on it. Vizzie flags each dataset's licence (or its absence) so you can see this before you build.
Shares York Region's licence pointer and its unreadable licence page; same rights-unknown position (checked 20 Sep 2026).
No download, no GIS specialist. Opens in Vizzie.