The term CITY ON THE ST. LAWRENCE is represented by two crossword solutions: SOREL (5 letters) and QUEBEC (6 letters). Sorel is a city located in the province of Quebec, Canada, on the banks of the Saint Lawrence River. It is the fourth largest city in the province and has a population of over 30, 000 people. Quebec City is the capital of the province of Quebec and is located on the Saint Lawrence River. It is the second largest city in the province and has a population of over 500, 000 people.