What major cities are located in the St Lawrence lowlands?

- Montreal, Quebec, Canada

- Quebec City, Quebec, Canada

- Ottawa, Ontario, Canada

- Toronto, Ontario, Canada

- Hamilton, Ontario, Canada

- Kingston, Ontario, Canada

- Ogdensburg, New York, United States

- Watertown, New York, United States

- Syracuse, New York, United States

- Rochester, New York, United States

- Buffalo, New York, United States