All or parts of how many U.S. states are farther north than the southernmost part of Canada?

Canada covers such a large part of upper North American that it can be overlooked how far south the country actually extends. The Province of Ontario contains its most southerly extremes: on the mainland at Point Pelee; on solid land at the edge of Middle Island; and on open water at an international boundary upon Lake Erie just south of Middle Island.

The southernmost point in Canada is completely south of Alaska, Washington, Oregon, Idaho, Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan, Massachusetts, Vermont, New Hampshire, and Maine.

It is south of substantial portions of Wyoming, Nebraska, Iowa, New York, Rhode Island and Connecticut

It is south of small parts of California, Nevada, Utah, Illinois, Indiana, Ohio, and Pennsylvania. That totals 27 states.