The Thousand Islands is the name of an archipelago of islands that straddle the Canada-U.S. border in the Saint Lawrence River as it emerges from the northeast corner of Lake Ontario. The Canadian islands are in the province of Ontario, the U.S. islands in the state of New York. The islands, which number 1,793 in all, range in size from over 100 km2 to smaller islands occupied by a single residence, to even smaller uninhabited outcroppings of rocks that are home to migratory waterfowl.