Howell is the largest city in and the county seat of Livingston County, Michigan, United States. The population was 10,068 at the 2020 census. The city is mostly surrounded by Howell Township, but the two are administered autonomously. Howell is part of the South Lyon–Howell–Brighton urban area, which is an extension of the larger Detroit–Warren–Dearborn metropolitan statistical area. As of 2022, the largest industries were manufacturing, health care & social assistance, and accommodation & food services.