Williamson County is the name of two different counties in the United States: one in Texas and one in Tennessee.

Williamson County, Texas

  • Located in Central Texas , just north of Austin.
  • Part of the Austin–Round Rock–San Marcos metropolitan area.
  • County seat: Georgetown ; other major cities include Round Rock, Hutto, Liberty Hill, and Taylor.
  • Roughly 1,137 square miles in size, straddling the Balcones Escarpment between the Edwards Plateau and the Texas Blackland Prairies.

Quick overview (Texas)

Item| Detail
---|---
State| Texas 5
Region| Central Texas, north of Austin 3
County seat| Georgetown 5
Metro area| Austin–Round Rock–San Marcos 5
Approx. population (2024 est.)| ~727,480 5

Williamson County, Tennessee

  • Located in Middle Tennessee , just south of Nashville.
  • County seat: Franklin.
  • Part of the Nashville–Davidson–Murfreesboro–Franklin, TN metropolitan statistical area.

Quick overview (Tennessee)

Item| Detail
---|---
State| Tennessee 7
Region| Middle Tennessee, south of Nashville 7
County seat| Franklin 7
Metro area| Nashville–Davidson–Murfreesboro–Franklin 7
Approx. population (2020)| ~247,726 7

If you tell me which state you’re asking about (Texas or Tennessee), I can give you a more tailored breakdown of where that specific Williamson County sits on the map and what it’s known for.