Newnansville, Florida was one of the first American settlements in the interior of Florida. It became the second county seat of Alachua County in 1828, and one of the central locations for activity during the Second Seminole War, during which time it was one of the largest cities in the State. In the 1850s, the Florida Railroad bypassed Newnansville, res…Newnansville, Florida was one of the first American settlements in the interior of Florida. It became the second county seat of Alachua County in 1828, and one of the central locations for activity during the Second Seminole War, during which time it was one of the largest cities in the State. In the 1850s, the Florida Railroad bypassed Newnansville, resulting in the county seat being moved to the new town of Gainesville in 1854. Consequently, Newnansville began to decline, and when a second railway bypassed the town in 1884, most of its residents relocated and formed the new City of Alachua. By 1900, Newnansville was deserted.