Williamson County, TN Property Tax Rate
Homeowners in Williamson County pay an effective 0.43% of home value in property tax — about $2,897 a year on the median $673,700 home, below or near the Tennessee county median of 0.50%.
Williamson County, TN: 0.43% effective property tax — ~$2,897/yr on the median home.
- Effective rate0.43%
- Median home value$673,700
- Median annual bill$2,897
- TN county median0.50%
- U.S. county median0.84%
Source: U.S. Census ACS 2023 5-year (median taxes paid ÷ median value), compiled June 2026.
Williamson County vs. Tennessee and the U.S.
| Effective rate | On the county's $673,700 median home | |
|---|---|---|
| Williamson County | 0.43% | $2,897 |
| Tennessee county median | 0.50% | $3,368 |
| U.S. county median | 0.84% | $5,659 |
Median household income here is $131,202, putting the median tax bill at about 2.2% of income. Effective rates fold in homestead exemptions and assessment practice — they're what owners actually pay, which is why they beat statutory rates for comparison.
Highest & lowest rates in Tennessee
| County | Effective rate | Median bill |
|---|---|---|
| Shelby County | 1.03% | $2,366 |
| Haywood County | 0.71% | $849 |
| Lake County | 0.71% | $760 |
| Gibson County | 0.68% | $1,018 |
| Sevier County | 0.31% | $804 |
| Cumberland County | 0.31% | $707 |
| Fentress County | 0.34% | $516 |
| Fayette County | 0.35% | $1,106 |
Full picture: Tennessee property tax calculator · interactive county atlas · all county pages.
Frequently asked questions
What is the property tax rate in Williamson County, TN?
The effective rate is about 0.43% of home value — the median homeowner pays roughly $2,897 a year on a $673,700 median home (ACS 2023 five-year data).
Is Williamson County's property tax high?
It's below or near the Tennessee county median (0.50%) and below the U.S. county median (0.84%).
How is the effective rate calculated?
Median real-estate taxes paid ÷ median home value, from the Census American Community Survey — what owners actually pay, after exemptions, rather than the statutory millage.
Sources & methodology
Sources: Census ACS 2023 5-year tables B25103/B25077.
Effective rate = median real-estate taxes ÷ median home value (owner-occupied). Individual bills vary with exemptions, assessment timing and local levies — verify with the county assessor.