Columbia County is a county located in the north central portion of the U.S. state of Florida. As of the 2020 census, the population was 69,698, up from 67,531 at the 2010 census. Its county seat is Lake City. Columbia County comprises the Lake City, FL Micropolitan Statistical Area, which is included in the Gainesville-Lake City, FL Combined Statistical Area. Osceola National Forest is partially in Columbia County. History After Florida became a territory of the United States in 1821, pioneer and immigrant settlers from the United States formed their own settlement adjacent to a Seminole village called Alligator Village, and called it Alligator. Following the 1823 Treaty of Moultrie Creek, the residents of Alligator village relocated to the banks of Peace Creek in the newly established Seminole reservation, leaving Alligator Town on its own. When Columbia County was formed in 1832 from Duval and Alachua counties, Alligator Town was designated as the seat of the county government. It was renamed as Columbia, the poetic form for the United States. The county was developed for agriculture and the timber industry, with products such as turpentine, lumber, and plywood. From 1832 to 1839, the county seat was Newnansville, but that town and area were returned to Alachua County. In November 1858 a railroad was completed connecting Jacksonville to Alligator, which opened the town to more commerce and passenger traffic. Alligator Town was incorporated and its name changed to Lake City in 1859; M. Whit Smith was elected as the town's first mayor. According to an urban legend, the name was changed because the mayor's wife Martha Jane, who had recently moved to the town, refused to hang her lace curtains in a town named Alligator. During the American Civil War, the railroad between Lake City and Jacksonville was used to send beef and salt to Confederate soldiers. In February 1864 Union troops under Truman Seymour advanced west from Jacksonville. His objective was to disrupt Confederate supplies, and obtain African-American recruits and supplies. Confederate General Joseph Finnegan assembled troops and called for reinforcements from P. G. T. Beauregard in response to the Union threat. On February 11, 1864, Finnegan's troops defeated a Union cavalry raid in Lake City. After the Union cavalry was repulsed, Finnegan moved his forces to Olustee Station about ten miles east of Lake City. The Confederate presence at Olustee Station was reinforced to prepare for the Union troops