Indian Lake is a borough in Somerset County, Pennsylvania. It is part of the Johnstown, Pennsylvania Metropolitan Statistical Area. The population was 394 at the 2010 census, down from 450 in 2000. Indian Lake is home to Indian Lake Golf Club, which opened in 1974, and was the first to be designed by Arnold Palmer, Northwinds Golf Course (public), Indian Lake Resort (fine dining, banquet, and swimming), Indian Lake Marina, and the new James W.