South Lyon is a city in Oakland County in the U.S. state of Michigan. The population was 11,327 at the 2010 census.As a western suburb of Metro Detroit, South Lyon is about 20 miles (32.2 km) northwest of the city of Detroit and the same distance northeast of the city of Ann Arbor. The city is also listed as part of the South Lyon–Howell, MI urban area, which had a population of 119,509 at the 2010 census. According to the United States Census Bureau, the city has a total area of 3.74 square miles (9.69 km2), of which 3.73 square miles (9.66 km2) is land and 0.01 square miles (0.03 km2) (0.27%) is water.South Lyon was founded in 1832 and was called Thompson’s Corners. In the same year, the surrounding township was named Lyon for Lucius Lyon, a member of the State Legislature.
The village was given a name for its location within the township. South Lyon was incorporated as a village in 1873 and as a city in 1930Three rail lines once passed through South Lyon. In the summer of 1871, the Detroit, Lansing and Northern was built west from Plymouth on the way to Lansing and Ionia. In 1880, the predessor to the Ann Arbor Railroad built a line into town from Ann Arbor. The goal of this line was to continue on towards Pontiac but that did not occur under the original owners. The line was pulled up around 1890. In 1883 the Grand Trunk built their Jackson Branch from Pontiac to Jackson, which crossed the Pere Marquette at South Lyon. The GTW branch line continued to serve South Lyon until the early 1980s.
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