Lake George is an unincorporated community in Lincoln Township, Clare County in the U.S. state of Michigan. The town is at the northern end of Lake George at 43°57′48″N 84°56′49″W / 43.96333°N 84.94694°W. The ZIP code for Lake George, is 48633 and provides P.O. Box service to an area on the northern side of Lake George. A post office was establish…Lake George is an unincorporated community in Lincoln Township, Clare County in the U.S. state of Michigan. The town is at the northern end of Lake George at 43°57′48″N 84°56′49″W / 43.96333°N 84.94694°W. The ZIP code for Lake George, is 48633 and provides P.O. Box service to an area on the northern side of Lake George. A post office was established on December 8, 1899. As of 2021, the 48633 ZIP Code Tabulation Area had a population of 107.