Market insights · Tennessee
Williamson County, TN: growth, migration and housing
Williamson County has 272,061 residents, up 9.0% since 2020 (+1.3% in the last year). In 2022–2023, 9,257 households moved in and 8,885 moved out (+372 net), bringing in a net $400.7M of income. Median household income is $135,594, the median home $751,900 and median rent $1,969 a month.
In Tennessee: 17th of 95 counties for 5-year population growth · 81st of 95 counties for net in-migration (per resident) · 1st of 95 counties for median household income · 1st of 95 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) |
|---|---|---|
| Davidson County, TN | 2,304 | $374.2M |
| Maury County, TN | 539 | $52.1M |
| Rutherford County, TN | 407 | $37.0M |
| Orange County, CA | 233 | $57.3M |
| Los Angeles County, CA | 205 | $57.8M |
| Wilson County, TN | 115 | $21.8M |
| San Diego County, CA | 109 | $21.0M |
| Sumner County, TN | 105 | $13.6M |
Where leavers went
Top counties by households leaving Williamson County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Davidson County, TN | 2,120 | $326.7M |
| Maury County, TN | 1,089 | $100.9M |
| Rutherford County, TN | 600 | $59.8M |
| Wilson County, TN | 171 | $18.1M |
| Marshall County, TN | 166 | $13.8M |
| Sumner County, TN | 155 | $19.7M |
| Dickson County, TN | 147 | $10.9M |
| Knox County, TN | 130 | $9.0M |
BizyFi in Williamson County
5 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Tennessee 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.