Tennessee · County property tax · ACS 2024
Williamson County Property Taxes
The median homeowner in Williamson County pays $3,004 a year, an effective rate of 0.40%, far above the U.S. average.
- $3,004
- Median tax / yr · High bill
- 0.40%
- Effective rate · Very low rate
- +51%
- vs U.S. average
- #79 of 95
- rank in TN
The verdict
Homeowners in Williamson County pay a median $3,004 a year in property tax, an effective rate of 0.40%, more affordable than 93% of U.S. counties (Census ACS 2024).
- $3,004
- Median annual tax bill, 2024
- 0.40%
- Effective rate on median home
- #217 of 3135
- U.S. counties by tax burden
- +51%
- vs the national average bill
Effective rate is the median property tax bill divided by the median home value ($751,900). U.S. Census Bureau, ACS 5-Year Estimates · 2024.
Census Bureau ACS property tax data for Tennessee. Population: 260,351. Owner-occupied homes: 72,671.
The median annual property tax in Williamson County is $3,004, which is 108% higher than the Tennessee state average and 51% above the national average. The effective tax rate is 0.40% on a median home value of $751,900. Property taxes represent 2.2% of the median household income in this county.
Williamson County's rate standing among U.S. counties
Primary signal
The effective rate is a national tailwind
Williamson County's 0.40% effective rate is among the lowest of 3,135 tracked counties: roughly 93% pay a higher rate.
Decision signal 2
The bill sits well above the national median
Homeowners in Williamson County pay a median annual property tax of $3,004, far above the national median and far above the Tennessee state median. On a $751,900 median home, that works out to an effective rate of 0.40% once the local assessment base and millage are combined.
Decision signal 3
High among Tennessee counties by effective rate
Williamson County ranks #79 of 95 counties in Tennessee by effective rate (17% of in-state counties pay a lower rate).
Decision signal 4
Income and the tax bill sit in the middle band
Property taxes in Williamson County run within the commonly cited 2%-4% national benchmark, at about 2.2% of the $135,594 median household income.
Informational notice
Figures describe the median homeowner household in Williamson County as reported to the Census Bureau; your parcel can differ. Not tax, legal, or financial advice: check the county assessor or a qualified professional before decisions that depend on these numbers.
The rate gave way faster than almost anywhere
Between the 2020 and 2024 releases the median home value in Williamson County rose 59.5%, from $471,300 to $751,900. The effective rate fell 24.7% over the same span, a steeper move than in 92% of U.S. counties.
The median bill still rose 20.2%, to $3,004. Where the rate drops this far and the bill rises anyway, what changed is the value the rate is applied to.
Effective rate is the published median bill divided by the published median home value, so the two multiply back to the bill exactly; the rate's movement here is derived from those two figures rather than read from the rounded published rate. Both are ACS 5-year survey estimates for the median owner-occupied household, compared across non-overlapping releases. They describe what the Census published, not a local policy, assessment, or exemption change.
How to read this county's bill
Bills rose across 2020-2024, from $2,500 to $3,004, a gain of 20%. This is a comparison of published ACS medians, not an explanation of a particular property's assessment or tax bill.
The heaviest band is also the fullest one here: 35,728 of 72,671 owner-occupied homes (49.2%) report annual real-estate taxes above $3,000. That band has no upper edge in the source, so the county median understates the burden carried by the plurality rather than describing it.
The most forgiving PAIRING in the data, top-quartile household income with a bottom-quartile effective rate, puts the median bill at 2.2% of median household income. Home values still drive the dollar figure, which is why the ratio above varies widely among counties that share this position.
The share above is the median annual bill divided by median household income, a ratio of two county-level medians rather than a household-by-household figure.
What Williamson County Homeowners Actually Pay
The single largest group of Williamson County homeowners, 35,728 of 72,671 owner-occupied homes (49.2%), pays $3,000 or more a year. The median is one point in this spread, not a typical bill.
- Less than $800 3.7% (2,656)
- $800 to $1,499 8.1% (5,856)
- $1,500 to $1,999 10.1% (7,310)
- $2,000 to $2,999 27.2% (19,760)
- $3,000 or more 49.2% (35,728)
Census ACS 2024, table B25102. Bands and the no-tax share sum to 100%.
1,361 homes here (1.9%) report no real estate tax at all. Exemptions are set by state: how Tennessee handles assessments and appeals.
With vs Without Mortgage
Mortgaged and non-mortgaged homeowners in Williamson County pay about the same bill, a 2% gap.
Williamson County's effective rate vs peers
Effective property tax rate (median tax ÷ median home value), ACS 2024.
Williamson County's effective rate is higher than 17% of the 95 counties in Tennessee - ranking #79 of 95.
Where Williamson County sits among every U.S. county
Effective property tax rate (median tax ÷ median home value)
0.40% Among the most affordable more affordable than 93% of 3,135 U.S. counties
Show national distribution
Each bar is a band; taller bars hold more U.S. counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2024
A low rate, a bigger bill
Williamson County taxes property at 0.40%, roughly 20% below the Tennessee average, and still bills a median $3,004, about 108% above the state figure. Because the effective rate is the bill divided by the home's value, that combination means local home values run well ahead of the state norm: a gentler rate applied to a larger base.
Williamson County vs Benchmarks
| Metric | Williamson County | Tennessee Avg | U.S. Avg |
|---|---|---|---|
| Median Annual Tax High bill | |||
| Effective Tax Rate Very low rate | |||
| Median Home Value | |||
| Tax as % of income Below-median income burden | 2.2% | - | - |
Source: U.S. Census Bureau, ACS 5-Year Estimates. Tax-burden differences across rows reflect millage decisions, assessment-ratio practices, and the residential-vs-commercial mix of each tax base.
Williamson County is QUIET · HEAVY on ACS medians, still verify your parcel card before quoting the county figure. Estimate appeal savings · Tennessee counties.
Williamson County rate trail · QUIET
| Year | Median Tax (vs prior release) | Effective Rate |
|---|---|---|
| 2024 | $3,004 +3.9% | 0.40% |
| 2023 | $2,891 +4.4% | 0.43% |
| 2022 | $2,770 +7.0% | 0.45% |
| 2021 | $2,588 +3.5% | 0.52% |
| 2020 | $2,500 | 0.53% |
Each row is a separate ACS 5-year release, and consecutive releases share four of their five survey years. The percentage beside each bill is therefore movement in the published estimate against the previous release, not a single year's tax change. The two releases largely describe the same households. For change over time, compare releases that do not overlap.
Williamson County: tax-to-income at 2.2%
Counties near Williamson County's effective rate
On effective rate, Williamson County sits nearest Buffalo County (SD), Cimarron County (OK), Wright County (MO).
On published median-tax change, the nearest matches are Chemung County (NY), Potter County (SD), Baldwin County (GA).
How peers are chosen
These are the nearest cross-state matches in the published Census data, not neighboring counties or recommendations. Peers are rebuilt with each data release; see the calculation method.
Similar effective rates
Similar published median-tax changes, 2020–2024
Williamson County: only 16% of returns show Schedule A real-estate tax
Tax year 2022: 19,110 of 119,380 returns from Williamson County reported real estate taxes, averaging $5,785 - 64% of those reporters sat in the $200k+ AGI band.
What this IRS county file does not say
Amounts are reported before the SALT cap, not deducted; the share is of filers, not homeowners. Source: IRS SOI county data, tax year 2022.
Other Counties in Tennessee
Williamson County rate FAQs
- How does Williamson County property tax compare to the national average?
- Property taxes in Williamson County run far above the national median of $1,993, an effective rate of 0.40% versus 0.92% nationally.
- What is the average property tax in Williamson County, Tennessee?
- The median annual property tax in Williamson County is $3,004, an effective rate of 0.40% on a $751,900 median home (Census ACS, 2024).
- What is the tax affordability score for Williamson County?
- Williamson County, Tennessee scores C+ (60/100) on PlainPropertyTax's tax affordability composite across 5 Census ACS dimensions (effective rate, bill size, income share, mortgage gap, and home-value/income). Its strongest scored dimension here is rate relief at A+ (0.40%). The score compares published county medians to U.S. percentiles, it is not a personal bill and not advice to buy, sell, appeal, or relocate.
- Are property taxes increasing in Williamson County?
- The ACS median property-tax bill for Williamson County jumped 20.2% between the 2020 and 2024 5-year releases, from $2,500 to $3,004, a 4-year span. These are survey estimates covering five years each, so this compares the two releases furthest apart rather than consecutive ones, which overlap and would mostly measure the same households twice.
- What percentage of income goes to property taxes in Williamson County?
- Property taxes in Williamson County run within the commonly cited 2%-4% national benchmark, at about 2.2% of the $135,594 median household income.
What to do with Williamson County's QUIET rate
Williamson County's $3,004 median bill sits well above the U.S. median - size a personal estimate before treating the county headline as your budget. Estimate your bill →
Williamson County ranks #79 of 95 Tennessee counties by effective rate - on the lower-burden half of the state ACS set. Tennessee overview →
Nationwide peers by effective rate (then bill)
Rate-first peers for Williamson County's QUIET effective rate, then a disjoint out-of-state bill set so the two neighborhoods stay distinct.
Similar effective rate
Nearest out-of-state counties by ACS effective rate. This county: 0.40%.
Similar median bill
Nearest out-of-state counties by ACS median annual tax. This county: $3,004/yr. Rate peers are excluded so the two link sets stay distinct.
Read with Williamson County
Nearest ABS(median_tax) ACS peers for Williamson County (QUIET · HEAVY), replacing the old fixed Keep exploring strip.
QUIET HEAVY
Hunt County, TX
ABS(median_tax) peer · $3,002/yr (near-tied bill ABS $2); rate 1.24% vs Williamson County 0.40%.
Mason County, WA
ABS(median_tax) peer · $3,006/yr (near-tied bill ABS $2); rate 0.73% vs Williamson County 0.40%.
Jackson County, GA
ABS(median_tax) peer · $3,000/yr (near-tied bill ABS $4); rate 0.87% vs Williamson County 0.40%.
Goodhue County, MN
ABS(median_tax) peer · $2,998/yr (near-tied bill ABS $6); rate 1.05% vs Williamson County 0.40%.
Tennessee county set
State ACS overview for every published Tennessee county rate and median bill.
Assessment cycle basics
Williamson County stamps QUIET · HEAVY - how assessed value and millage become the ACS median bill.
Data vintage and method
Data as of 2024. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates.
Property tax data reflects median amounts paid by homeowners. Effective rates are calculated as median tax divided by median home value.
Source: U.S. Census Bureau American Community Survey 5-Year Estimates, county median real-estate taxes · 2024 Williamson County (QUIET · HEAVY) - ACS medians, not a parcel bill.