Lutz/luts/ is an unincorporated census-designated place in Hillsborough County, Florida, United States. The population was 19,344 at the 2010 census. Lutz began with the construction of a small train depot on the Tampa Northern Railroad. The area surrounding the depot officially became known as Lutz when the U.S. Postal Service authorized a post office. The community was named for W. P. Lutz, who was credited with bringing the railroad to town.