Pleasant Lake is an unincorporated community in Steuben Township, Steuben County, in the U.S. state of Indiana.Pleasant Lake was originally called Nipcondish, which means "pleasant waters." The town is named after the lake which is the focus of the town.The Pleasant Lake post office has been in operation since 1851.Pleasant Lake is located at 41°34′31″N 85°00′58″W / 41.57528°N 85.01611°W / 41.57528; -85.01611.