 The per capita income for the city was $108,625.About 6.3% of families and 7.8% of the population were below the poverty line, including 5.4% of those under age 18 and 7.1% of those age 65 or over.Thorne Bay is named for Frank Manly Thorn, who served as Superintendent of the United States Coast and Geodetic Survey from 1885 to 1889.