Thornton, Robertson County, Texas Property Taxes
Property Taxes in Thornton, Texas
Median Thornton, Texas effective property tax rate: 1.34%, significantly lower than the national median of 1.02%, and lower than the Texas state median of 1.48%.
Median Thornton, Texas home value: $224,663
Median annual Thornton, Texas tax bill: $2,516, higher than the national median property tax bill of $2,400.
How are property taxes in Robertson calculated?
Property taxes in Thornton, Texas are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Thornton's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Thornton, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Thornton, Robertson County, Texas Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.34%
Estimate Property Tax Bill
$3,010
$2,794
How Does the Thornton Property Tax Calculator Work?
Use this Thornton property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Thornton's median effective tax rate of 1.34% — based on actual property records in Robertson County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Thornton's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Thornton: rates range from 1.34% in 76687 to 1.34% in 76687, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Thornton.
About Thornton Property Taxes
About Property Taxes in Thornton, Robertson, Texas
Thornton’s median effective property tax rate of 1.34% is lower than the Texas state median of 1.48% and higher than the national median of 1.02%. This rate reflects the Robertson County base levy and local taxing jurisdictions that shape what homeowners pay.
Property tax rates are not uniform across Thornton. Homeowners in ZIP code 76687 carry a median effective rate of 1.34%, and the same ZIP also has the city’s median tax bill of $2,516. That consistency means location within Thornton does not create a rate spread, but assessed value still matters for your annual bill.
Thornton homeowners who believe their assessed value is too high can file a formal appeal with the local Appraisal District before the May 15, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Thornton, Robertson County, Texas
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Thornton's effective property tax rate to other cities in Texas and the median property tax rates in Texas and the U.S.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Thornton Tax Rate
1.34%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Robertson County Tax Rate
1.35%
Median Effective Texas Tax Rate
1.48%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Thornton, Robertson County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 76687 | 0.84% | 1.04% | 1.34% | 1.43% | 1.67% |
Source: Ownwell
Property Tax Assessment Values Across Thornton, Robertson County, Texas
When examining property taxes in Thornton, Texas, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Robertson County appraisal district estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices in Robertson County are sent in the spring each year and typically reach your mailbox by the middle of the month. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill.
For example, the median home price in Thornton is $224,663, with a median tax bill of $2,516. The highest median home price is in 76687 at $224,663.
Property Tax Assessment Values Across Thornton, Robertson County, Texas
Source: Ownwell
$85,830
$155,247
$224,663
Median Thornton Market Value
$224,663
Median Robertson County Market Value
$135,354
Median Texas Market Value
$258,851
Median United States Market Value
$235,294
Property Tax Assessment Values Across Thornton, Robertson County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 76687 | $35,622 | $89,122 | $224,663 | $381,300 | $529,809 |
Source: Ownwell
Property Tax Bills Across Thornton, Robertson County, Texas
Property tax bills in Thornton are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. That means the bill depends on both the value of the home and the tax rates set by local taxing authorities.
For a home with a median market value of $224,663, the property tax bill can vary widely depending on location and exemptions. In this area, the 25th percentile tax bill is $1,039, while the 75th percentile is $4,504 and the 90th percentile reaches $7,000. The median tax bill in the local ZIP code, 76687, is $2,516.
These bills can have a major impact on homeowners because they add to the ongoing cost of owning a home and can differ significantly from one property to another. Compared with the national median property tax rate of 1.02% and the national median property tax bill of $2,400, Thornton homeowners may see bills that are similar or much higher depending on their assessed value and tax rate.
Median Thornton Tax Bill
$2,516
Median Robertson County Tax Bill
$1,619
Median Texas Tax Bill
$3,441
Median United States Tax Bill
$2,400
Property Tax Bills Across Thornton, Robertson County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 76687 | $420 | $1,039 | $2,516 | $4,504 | $7,000 |
Source: Ownwell
Don't miss the deadline to protest!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Robertson Appraisal District | |
| Website | esearch.robertsoncad.com |