
South Lyon
- County:
- Oakland County
- County Seat:
- No
- Area (mi²):
- 3.741
- State:
- Michigan
South Lyon is a city located in Oakland County, Michigan. South Lyon has a 2025 population of 12,077. South Lyon is currently growing at a rate of 0.57% annually and its population has increased by 2.9% since the most recent census, which recorded a population of 11,737 in 2020.
The average household income in South Lyon is $113,476 with a poverty rate of 4.81%. The median age in South Lyon is 41.8 years: 40.9 years for males, and 44.2 years for females.