South Lyon is located in Michigan. South Lyon, Michigan 48178has a population of 11,786. South Lyon 48178 is more family-centric than the surrounding county with 38.15% of the households containing married families with children. The county average for households married with children is 32.55%.
The median household income in South Lyon, Michigan 48178 is $79,345. The median household income for the surrounding county is $86,275 compared to the national median of $69,021. The median age of people living in South Lyon 48178 is 43.8 years.
The average high temperature in July is 81.8 degrees, with an average low temperature in January of 15.8 degrees. The average rainfall is approximately 34.8 inches per year, with 41.5 inches of snow per year.