Beta Williamson County, TX only — data and coverage are limited during early access.

RR 620, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

Property at a Glance

There are not enough comparable properties nearby to estimate a price range. The Williamson County Appraisal District values this home at $4,574,502.

Estimated Value Range

WCAD Appraised Value $4,574,502

Comparable data is not yet available for this property. The Williamson County Appraisal District values it at $4,574,502.

The Neighborhood

This home is valued 892.7% above the R301580A - Robinson, Austin White Lime median of $460,832. With 84 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 16.8% over the past year.

R301580A - Robinson, Austin White Lime

outlier high
84 Properties
$460,832 Median Value
-16.8% YoY Change
0% Have Pool
0% Have Garage
This Home
$4,574,502
Median
$460,832

This home is +892.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $3,712 across all districts. With a homestead exemption claimed, that drops to $2,417 — saving $1,295 per year. That's $201 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$2,171
Williamson CountyCounty0.3694%$898
Austin Community Collegespecial0.1034%$251
Williamson County ESD #9 - Round RockESD0.0999%$243
Williamson County FM/RdCounty0.0443%$108
Upper Brushy Creek WCIDWater0.0170%$41
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$3,712

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

View full property details