Photo: American Battlefield Protection Program / Wikimedia Commons (Public domain)Williamson County
The wealthiest county in Tennessee, directly south of Nashville, built around Franklin, Brentwood, and Spring Hill. It's where relocating executives and young families with school-age kids gravitate first, and the school district's reputation is a big reason why.
Williamson County sits immediately south of Davidson along I-65 and I-840, and it has been the fastest-growing, richest county in the state for long enough that its identity now runs on that reputation: median household income well into six figures, a poverty rate under 5%, and a population that's more than doubled since 2000 to roughly 275,000. Franklin is the county seat and the closest thing to a real downtown, with a genuinely well-preserved historic square that predates the sprawl around it; Brentwood is the older-money bedroom suburb closest to Nashville; Spring Hill, technically split between Williamson and Maury counties, is the newer, faster-growing, more affordable edge where most of the recent subdivision construction has gone.
The math that draws people here is straightforward and unforgiving: home values averaging north of $900,000 county-wide, driven by new construction and land scarcity, in exchange for Williamson County Schools, which consistently rank among the best public districts in Tennessee and get cited constantly by relocation agents as the single reason families choose the county over a cheaper option closer to town. That tradeoff — pay a real premium, get top-tier public schools and low crime — is the entire pitch, and it's one Williamson County has been able to make more credibly than anywhere else in the region for over a decade.
The commute to downtown Nashville from Franklin or Brentwood runs 25 to 45 minutes depending on where along I-65 you land and what time you're driving, which is tolerable but not nothing, and it's the main quality-of-life cost that comes with the schools and the space. It suits families prioritizing a top public school zone and willing to trade commute time and home price for it, corporate relocations (several major companies have moved or expanded headquarters into the county in recent years), and anyone who wants small-town character — Franklin's square, Civil War history, a walkable Main Street — without giving up proximity to a major city.
Highlights
- —Wealthiest county in Tennessee — median household income around $135,000
- —Population has more than doubled since 2000, to roughly 275,000
- —Average home value around $915,000, the priciest in the metro
- —Franklin's historic downtown square is one of the best-preserved in the South
- —Williamson County Schools is the district families relocate specifically to get into
Insider tip
If schools are the deciding factor, verify the zoned elementary/middle/high school for a specific address before signing anything — Williamson County's boundaries get redrawn periodically as new schools open to handle growth.