Portage La Prairie, a port of entry and the chief town of Portage la Prairie county, Manitoba, Canada, situated 50 m. W. of Winnipeg, on the Canadian Pacific and Canadian Northern railways, at an altitude of 854 ft. above the sea. Pop. (igoi), 390 1. It is in the midst of a fine agricultural district, into which several branch railways extend, and carries on a large export trade in grain and other farm produce.