September 17 - 21, 2024. The Bluffton Free Street Fair is known as the oldest and largest street fair in the State of Indiana. Our fair dates back to 1898 and was originally organized as the Bluffton Street Fair and Wells County Agricultural Exposition. Due to the Depression and wars there were 11 years that a fair was not held. The fall fair is always held Tuesday through Saturday of the 3rd full week of September (or 15 days after Labor Day).Check out the website to keep up date with the events that will go on all week.