Map of St. Catharines

Map of St. Catharines, the largest city in the Niagara Region, between Lake Ontario and the Niagara Escarpment.

Last reviewed on April 27, 2026

About St. Catharines

St. Catharines is home to Brock University and the headquarters of the Niagara Region. The Welland Canal, which connects Lake Ontario to Lake Erie, runs through the eastern edge of the city. The Henley Regatta course on Martindale Pond hosts national rowing championships.

Geography & Major Routes

The Queen Elizabeth Way (QEW) cuts through the city. Highway 406 connects south to Welland.

St. Catharines Districts & Communities

Downtown St. Catharines around St. Paul Street, Port Dalhousie on the lake (a former separate village), the Brock University area at the top of the escarpment, and the Merritton industrial heritage area along the canal define the city.

Region

St. Catharines is part of Niagara Region / Southern Ontario, with a population of approximately 140,000. For broader context, see the Southern Ontario regional map and the Ontario map with cities.

Related Ontario Maps

Other useful maps for trips through this part of Ontario

Southern Ontario Map

Regional map covering the GTA, Niagara, and southwestern Ontario.

Ontario Highway Map

Complete provincial highway network including the 400-series.

Ontario Cities Map

All major Ontario cities and towns on a single map.

All Ontario Cities

Full directory of city and town maps across the province.