Williamson County has added nearly 150,000 people since 2020, which is the 9th largest numeric increase for any county in the US.
It has also experienced explosive growth in commercial and residential development. Dell Technologies, headquartered in Round Rock, is one of the world’s largest technology companies. Southwestern University, often ranked in national listings as providing one of the best values in undergraduate education, is located in Georgetown. Other attractive communities in Williamson County include Cedar Park, Hutto, Jarrell, Leander, Liberty Hill, and Taylor.
WILLIAMSON COUNTY | AUSTIN MSA | ||
|---|---|---|---|
| Population 2025 | 752,827 | 2,620,945 | |
| Population growth 2015-2025 | 50.6% | 31.7% | |
| Land area (sq. mi.) 2020 | 1,115.8 | 4,219.5 | |
| Median age 2026 | 37.9 | 36.1 | |
| Households 2026 | 291,713 | 1,071,655 | |
| Home ownership rate 2026 | 66.2% | 56.6% | |
| Median household income 2026 | $120,989 | $107,481 | |
| Per capita income 2026 | $58,650 | $61,010 | |
| High school grads 2026 | 95.3% | 93.5% | |
| College grads 2026 | 51.5% | 53.9% | |
| Labor force 2025 | 431,900 | 1,555,142 | |
| Unemployment rate 2025 | 3.5% | 3.5% | |
| Public school enrollment 2025-2026 | 135,946 | 403,226 | |
| High school graduates 2025 | 10,016 | 26,886 | |
| Retail sales 2025 | $15,070 mil. | $52,913 mil. | |
| Business 2025 | Establishments | 15,949 | 76,604 |
| Employment | 262,378 | 1,392,465 | |
| Average salary | $78,568 | $89,172 | |
| Mfg.business 2025 | Establishments | 526 | 2,267 |
| Employment | 16,165 | 85,332 | |
| Average salary | $148,431 | $130,831 | |
Source: Texas Comptroller for retail sales; Texas Workforce Commission for labor force and unemployment; Chmura Economics for businesses, employees, and salaries; Texas Education Agency for public school enrollment and graduates; ESRI for 2026 demographic estimates; and U.S. Census Bureau for all other data.
| LARGEST CITIES IN THE COUNTY | LARGEST SCHOOL DISTRICTS IN THE COUNTY |
|---|---|
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