Property Tax in Williamson County, Tennessee
Homeowners in Williamson County, Tennessee pay a median of $2,891 a year in real estate taxes, on a median home value of $673,700. Those are the Census Bureau's published medians for the county (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023) — the typical bill and the typical home value for owner-occupied households.
What the Williamson County numbers mean
The median is the midpoint of the county's actual bills: half of Williamson County homeowners pay more than $2,891 a year and half pay less. The exact bill for any one home depends on its assessed value, exemptions, and which school, municipal and special districts cover it.
Set against the median home value of $673,700, the median bill works out to a derived effective rate of 0.43%. That rate is an estimate computed from the two medians — no county publishes a rate calculated this way — but it adjusts for home prices, which makes comparisons between counties more meaningful.
The key figures for Williamson County
| Measure | Williamson County |
|---|---|
| Median real estate taxes paid per year | $2,891 |
| Median home value | $673,700 |
| Derived effective rate* | 0.43% |
| Equivalent monthly tax | $241 |
| Tax per $100,000 of value (derived) | $429 |
| Illustrative tax on a $400,000 home (derived rate) | $1,716 |
For context, the Tennessee medians are $1,400 of tax on $256,800 of value, and the US medians are $2,969 on $303,400. *Derived figures are estimates from Census medians, not official rates.
Williamson County at a glance
- Median tax rank in Tennessee: #1 of 95 counties
- Median home value rank in Tennessee: #1 of 95
- Population rank in Tennessee: #6 of 95 (254,609 residents)
- Population density rank: #6 of 95 (437 people per square mile)
- Land area rank in Tennessee: #16 of 95 (582 sq mi, 1.4% of the combined county land area)
- Median tax as a monthly figure: $241; per $1,000 of home value: $0.43
How Williamson County compares
The median tax bill in Williamson County is about 106% higher than the state median ($1,400 for Tennessee) and about the same as the US median ($2,969 nationally). By median taxes paid, the county ranks #1 out of 95 Tennessee counties with published Census data — 0 counties in the state have a higher median bill.
Comparisons cut both ways: a county can have a modest rate but high bills because homes are expensive, or a high rate but modest bills because homes are cheaper. Williamson County's derived rate of 0.43% sits below the derived US figure of 0.98%.
Some extra context for Williamson County: the median bill works out to about $241 a month, and the derived rate equals roughly $429 of tax per $100,000 of home value. The county is home to 254,609 people — the #6 most populous county in Tennessee, spread over 582 square miles, a density of about 437 people per square mile. Its median home value, $673,700, ranks #1 among the state's 95 counties with data.
Nationally, Williamson County's median bill of $2,891 ranks #478 of 3133 counties with published data — inside the top 15% of counties by tax paid. The county accounts for about 3.6% of Tennessee's population, its median home value is about 162% above the state median, and at the derived rate the median home would hand over roughly 4.29% of its value in tax across a decade. Within the state, the distance from Williamson County to the most expensive county, Williamson County ($2,891), is $0 a year.
Counties nearest Williamson County in the Tennessee ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| Davidson County, TN | $2,390 | $386,600 | 0.62% |
| Shelby County, TN | $2,376 | $229,700 | 1.03% |
How the tax is worked out
As an illustration of the arithmetic: at Williamson County's derived rate of 0.43%, a home valued at $400,000 would carry a tax bill of roughly $1,716 a year. That is only an illustration using the derived rate — a real bill is computed from the property's assessed value, its exemptions, and the combined rates of its specific taxing districts, so it can be higher or lower.
The usual sequence is: the local assessor values the property; exemptions are applied; the taxable value is multiplied by the combined local rates; and the county bills and collects the tax, distributing it to the schools, municipalities and districts that levied it.
Checking your assessment in Williamson County
If your bill looks wrong, work through these steps:
1. Get your property record card from the assessor and check the basics — living area, lot size, bedrooms, condition, and any exemptions you should have.
2. Compare your assessed value with recent sale prices of similar homes in Williamson County.
3. Talk to the assessor's office informally first; clear errors are often fixed without a hearing.
4. If needed, file a formal appeal with the local review board before the deadline on your assessment notice, with your evidence attached.
5. Keep paying the bill as issued while the appeal runs, unless your notice says otherwise — unpaid taxes accrue penalties regardless of an appeal.
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Frequently asked questions
What is the median property tax in Williamson County, Tennessee?
The median real estate tax paid in Williamson County, Tennessee is $2,891 per year, on a median home value of $673,700 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Williamson County, Tennessee?
Dividing Williamson County's median tax bill ($2,891) by its median home value ($673,700) gives a derived effective rate of 0.43%. This is an estimate computed from two Census survey medians — it is not the county's official tax rate.
How does Williamson County compare with the rest of Tennessee?
By median taxes paid, Williamson County stands at #1 among the 95 Tennessee counties the Census publishes figures for. Its $2,891 median bill is about 106% higher than the state median ($1,400), and 0 counties in the state record a higher median.
How are property taxes calculated in Williamson County, Tennessee?
The assessor estimates your property's market value; exemptions (such as a homestead exemption) reduce the taxable amount; and the result is multiplied by the combined rates of the local taxing districts — county, municipality, school district and any special districts. In Williamson County, the median outcome of that process is a bill of $2,891 on a median home value of $673,700.
Can I appeal my property tax assessment in Williamson County, Tennessee?
You can. Pull your property record card from the Williamson County assessor, verify its details, and compare the assessed value against similar homes that sold recently. If the value still seems too high, submit a formal appeal to the board named on your notice before the stated deadline — usually a 30-to-90-day window.