Williamson County Property Taxes
Williamson County, Texas
Effective Tax Rate
0.00%
221.3% above state avgMedian Annual Tax
$0
$590/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
1.71%
At a Glance
Median Home Value
$414,600
State avg ▲ $171,960
Tax w/ Mortgage/yr
$7,477
$623/mo escrow
Tax w/o Mortgage/yr
$6,101
$508/mo
State Tax Rate Rank
#229
of 250 counties (1 = lowest)
Similar tax rates
Data Story
About Property Taxes in Williamson County, Texas
Williamson taxes track with national norms
Williamson County's effective tax rate of 1.707% is 34% above the national median of 1.27%, placing it in the upper-middle range nationally. However, the median annual tax of $7,079 reflects Williamson's booming property values—its median home price of $414,600 is 47% above the national median.
Among Texas's highest-value counties
Williamson's rate of 1.707% exceeds Texas's state average of 1.276%, ranking the county above 65% of peers statewide. The median annual tax of $7,079 is 223% above the state average of $2,193, driven by the county's rapid growth and rising property values.
Premium-priced homes command high taxes
Williamson County's $7,079 median tax is substantially higher than any comparison county, reflecting the fastest property value growth in the region. Its median home value of $414,600 far exceeds neighboring Wise County ($277,200) and Wilson County ($286,300).
Growth boom drives taxes skyward
On a median-value home of $414,600, Williamson County homeowners pay approximately $7,079 in annual property taxes. With a mortgage, the total reaches $7,477, making Williamson one of the highest-tax-paying jurisdictions in the eight-county region.
Rapid appreciation warrants assessment checks
Williamson's explosive growth often leads to assessed values lagging behind actual market prices, but overassessment still occurs in pockets. Even a 2% reduction in your assessed value would save homeowners roughly $140 annually—worth a quick call to your appraisal district.
How Williamson County Compares
Median Annual Property Tax
Williamson County
1.71%
Effective rate
Texas Avg
1.28%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
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Counties with Similar Tax Rates
Nearby Counties
Other Counties in Texas
Data updated: March 2026
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates. Effective tax rate is calculated as median property tax divided by median home value.