Sumner, Lamar County, Texas Property Taxes
Property Taxes in Sumner, Texas
Median Sumner, Texas effective property tax rate: 1.04%, significantly lower than the national median of 1.02%, and lower than the Texas state median of 1.48%.
Median Sumner, Texas home value: $184,730
Median annual Sumner, Texas tax bill: $1,760, $640 lower than the national median property tax bill of $2,400.
How are property taxes in Lamar calculated?
Property taxes in Sumner, 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 Sumner's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Sumner, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Sumner, Lamar County, Texas Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.04%
Estimate Property Tax Bill
$1,921
$1,783
How Does the Sumner Property Tax Calculator Work?
Use this Sumner property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Sumner's median effective tax rate of 1.04% — based on actual property records in Lamar 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 Sumner'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 Sumner: rates range from 1.04% in 75486 to 1.04% in 75486, 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 Sumner.
About Sumner Property Taxes
About Property Taxes in Sumner, Lamar, Texas
Sumner's median effective property tax rate of 1.04% is higher than the Texas state median of 1.48% and higher than the national median of 1.02%. This rate reflects the Lamar County base levy combined with local school district levies and Municipal Utility Districts (MUDs) that vary by subdivision throughout the city.
Property tax rates are not uniform across Sumner. Homeowners in the 75486 ZIP code carry a median effective rate of 1.04%, while those in 75486 pay 1.04%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Lamar County. Understanding which part of Sumner you live in can make a meaningful difference to your annual tax bill.
Sumner 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 Sumner, Lamar 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 Sumner'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 Sumner Tax Rate
1.04%
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 Lamar County Tax Rate
1.36%
Median Effective Texas Tax Rate
1.48%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Sumner, Lamar County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 75486 | 0.72% | 0.87% | 1.04% | 1.15% | 1.20% |
Source: Ownwell
Property Tax Assessment Values Across Sumner, Lamar County, Texas
When examining property taxes in Sumner, 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 Lamar 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 Lamar County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.
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. The median home price in Sumner is $184,730, and the median tax bill is $1,760, compared with the national median property tax rate of 1.02% and the national median property tax bill of $2,400.
Property Tax Assessment Values Across Sumner, Lamar County, Texas
Source: Ownwell
$104,880
$170,485
$236,090
Median Sumner Market Value
$184,730
Median Lamar County Market Value
$139,630
Median Texas Market Value
$258,851
Median United States Market Value
$235,294
Property Tax Assessment Values Across Sumner, Lamar County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 75486 | $76,816 | $134,530 | $184,730 | $242,460 | $318,814 |
Source: Ownwell
Property Tax Bills Across Sumner, Lamar County, Texas
Property tax bills in Sumner are based on the assessed value of a home and the local tax rate set by taxing authorities in Lamar County. When a property’s market value changes, the assessed value can change too, which affects the final bill. Homeowners with higher-valued homes generally pay more, while those with lower-valued homes pay less.
In Sumner, the median home price is $184,730, and the median property tax bill is $1,760, which is below the national median property tax bill of $2,400. Tax bills can vary widely, with the 25th percentile at $1,229 and the 75th percentile at $2,524. At the 90th percentile, the bill reaches $3,397. These differences show how location, home value, and assessment outcomes can affect what homeowners owe each year.
Median Sumner Tax Bill
$1,760
Median Lamar County Tax Bill
$1,771
Median Texas Tax Bill
$3,441
Median United States Tax Bill
$2,400
Property Tax Bills Across Sumner, Lamar County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 75486 | $698 | $1,229 | $1,760 | $2,524 | $3,397 |
Source: Ownwell
Don't miss the deadline to protest!
Dates | |
|---|---|
| Appeal Deadline | May 15 |
| Tax Bill | |
| Issued | October 1 |
| Due Date #1 | November 30 |
| Due Date #2 | June 30 |
Links | |
|---|---|
| Lamar Appraisal District | |
| Website | esearch.lamarcad.org |