[5] Wilson County is part of the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area.

[1] Wilson County was the site of an important saltpeter mine.

Saltpeter, the main ingredient of gunpowder, was obtained by leaching the earth from Valley Cave.

The many saltpeter hoppers still inside the cave indicate that this was a large mining operation.

Wilson County is home to a large concentration of cedar glades, a unique ecosystem where the soil is too rocky or shallow for trees to grow.

As of the 2020 United States census, there were 147,737 people, 51,618 households, and 40,874 families residing in the county.

As of the census of 2010,[15] there were 113,993 people, 42,563 households, and 32,177 families living in the county.

At the 2000 census there were 88,809 people, 32,798 households, and 25,582 families living in the county.

The latter has all high school zoning in the entire county,[18] while the former has grades K-8 and special education services.

[19] Like the rest of Nashville's suburbs, Wilson County is a Republican stronghold.

After going to George W. Bush by six points in 2000, Wilson County dramatically shifted to the right.

Since 2004, Republicans have won the county by at least a 30-point margin of victory each time.

2016 marked the worst performance ever by a Democratic presidential candidate in the county, with Donald Trump winning it by 44 points.