County Dossier

Williamson County

Tennessee | County

Population

260,351

Land Area

582.9 sq mi

Context

Metro

Geography

County silhouette

Land Area
582.9 sq mi
Water Area
1.2 sq mi
Water Share
0.2%

Terrain Layer

Open the county terrain view inside the atlas flow.

Terra Firma

Population & Housing

Population

260,351

Density
446.6 / sq mi
Households
92,214
Housing Units
96,921
Median Age
40.4 years

Income & Economy

Median Household Income

$135,594

GDP

$38.78B

Real GDP Change+0.9%
Per Capita Income
$66,219
Personal Income
$37.60B
Personal Income Per Capita
$139,704

Classification

RUCC 1
Metro

Counties in metro areas of 1 million population or more

Relief

Min

346 ft

Mean

784 ft

Max

1,249 ft

Provenance

GEOID 47187 ANSI 01639801
Latitude 35.89485 Longitude -86.89789
Canonical 2025 Gazetteer ACS ACS 2020-2024 5-year BEA BEA county 2024 release (2026-02-05) BLS BLS LAUS 2024 annual average USDA USDA RUCC 2023 USGS USGS 3DEP published as of 2026-03-23