Wilson County is a county in the U.S. state of Tennessee. It is in Middle Tennessee. As of the 2020 census, the population was 147,737. Its county seat is Lebanon. The largest city is Mt. Juliet. Wilson County is part of the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area.

Lebanon is the county seat of Wilson County, Tennessee, United States. The population was 38,431 at the 2020 census. Lebanon is located in Middle Tennessee, approximately 25 miles (40 km) east of downtown Nashville. Lebanon is part of the Nashville Metropolitan Statistical Area.