The Fastest-Growing Grown-Ups in Tennessee Live Here: Wilson County Tops the State in Early-Career Residents
Anyone who has tried to get a brunch table in Mt. Juliet on a Saturday, or waited in a Wilson County school car line, already suspected this. Now there is a number to put on it: no county in Tennessee has added young working adults faster than Wilson County.
A Tennessee State Data Center analysis of the latest Census Bureau population estimates, published this month, looked at what it calls the “early-career” population — residents between 25 and 44 — from July 2020 to July 2025. Wilson County's count in that age group grew by 10,346 people, a jump of 27.7 percent. That is the fastest growth rate of all 95 counties in the state.
How Wilson County stacks up
By raw numbers, only three counties added more early-career residents over those five years: Davidson, with nearly 23,000; Montgomery, home to Clarksville, with about 13,000; and Hamilton, which includes Chattanooga, with about 11,300. Wilson County came in fourth, just ahead of neighboring Rutherford County at roughly 10,000. The difference is scale. Davidson's gain amounted to about 9 percent; Wilson's, starting from a much smaller base, was more than a quarter.
The runner-up by percentage tells the same story. Maury County, south of Williamson, grew its 25-to-44 population by nearly 24 percent. The fastest growth is happening in the counties that ring Tennessee's biggest cities, not in the cities themselves.
Statewide, Tennessee added more than 387,000 residents over the five years, growth of about 5.6 percent. The 25-to-44 group grew by roughly 158,800, or 8.9 percent. Rural counties as a group actually grew faster in that age range than urban ones, 11.3 percent versus 7.7 percent.
Why here
The reasons are easy to list if you live here. Mt. Juliet sits on I-40 with a WeGo Star commuter rail station in town, putting downtown Nashville and the airport within easy reach. Wilson County Schools are among the most sought-after districts in the region. Providence brought shopping and dining that once meant a drive into Davidson County, and new neighborhoods keep rising across Mt. Juliet, Lebanon and Watertown. Put simply, this is where a lot of people land when they start families and want more house and yard than a Nashville budget allows.
Ages 25 to 44 are the years people buy first homes, have children, start businesses and take on leadership in churches, youth leagues and civic clubs. A county gaining that group quickly tends to see it everywhere at once: new school construction, busier parks, more restaurants willing to take a chance on a new location.
That growth also brings the challenges residents talk about most, from traffic on Mt. Juliet Road to classrooms that fill as fast as they are built. But as a measure of whether people want to be here, it is hard to beat. Thinking about joining them? Our complete guide to moving to Mt. Juliet covers neighborhoods, schools and the commute.
