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Ontario Open Data, Free GIS and Geospatial Data Sources
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Ontario provides an extensive collection of Ontario Open Data resources that support mapping, spatial analysis, and evidence‑based decision‑making across the province. Here we bring together the most reliable Ontario Free GIS and Geospatial Data Sources, including provincial datasets, municipal open data portals, conservation authority layers, and high‑value resources such as LiDAR, orthophotography, hydrology, and parcel information. Whether you’re a GIS professional, researcher, or student, this page offers a centralized starting point for accessing authoritative, open geospatial data for projects of any scale.

Ontario Municipal Geospatial Data Portals
Ontario, being the largest Province in Canada, contains many large municipalities, and most provide enough geospatial data that they often have their own data portals. Therefore this page has been dedicated to the more then 80+ great Ontario Municipal Geospatial Data Portals that provide geospatial data.
