The Saint George River forms a border involving what town with a population of 1,534 at the 2010 census?
Saint George River:  The river follows a winding course 45 mi south to Thomaston, where the river flows into the estuary and runs about 12 mi southwest to Muscongus Bay, forming the border between Cushing and St. George. Cushing, Maine:  The population was 1,534 at the 2010 census.
Cushing