Laconia is a town in Boone Township, Harrison County, Indiana, United States. The population was 50 at the 2010 census. Laconia is located at 38°1′56″N 86°5′7″W / 38.03222°N 86.08528°W. According to the 2010 census, Laconia has a total area of 0.05 square miles, all land.