Market insights · Texas
Williamson County, TX: growth, migration and housing
Williamson County has 752,827 residents, up 22.3% since 2020 (+3.3% in the last year). In 2022–2023, 32,492 households moved in and 24,973 moved out (+7,519 net), bringing in a net $988.2M of income. Median household income is $111,340, the median home $447,000 and median rent $1,796 a month.
In Texas: 11th of 254 counties for 5-year population growth · 16th of 245 counties for net in-migration (per resident) · 6th of 254 counties for median household income · 6th of 250 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Williamson County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Travis County, TX | 12,394 | $1156.4M |
| Bell County, TX | 1,126 | $65.3M |
| Harris County, TX | 993 | $105.0M |
| Bexar County, TX | 702 | $51.1M |
| Hays County, TX | 516 | $30.8M |
| Dallas County, TX | 483 | $49.4M |
| Los Angeles County, CA | 377 | $36.1M |
| Tarrant County, TX | 370 | $33.3M |
Where leavers went
Top counties by households leaving Williamson County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Travis County, TX | 8,377 | $665.7M |
| Bell County, TX | 1,249 | $96.6M |
| Harris County, TX | 740 | $54.9M |
| Hays County, TX | 717 | $61.4M |
| Bexar County, TX | 629 | $46.7M |
| Burnet County, TX | 539 | $59.4M |
| Dallas County, TX | 409 | $33.0M |
| Bastrop County, TX | 368 | $25.3M |
BizyFi in Williamson County
8 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Texas companies.
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.