Port O Connor, Calhoun County, Texas Property Taxes
Property Taxes in Port O Connor, Texas
Median Port O Connor, Texas effective property tax rate: 1.56%, significantly higher than the national median of 1.02%, and higher than the Texas state median of 1.48%.
Median Port O Connor, Texas home value: $256,580
Median annual Port O Connor, Texas tax bill: $3,740, $1,340 higher than the national median property tax bill of $2,400.
How are property taxes in Calhoun calculated?
Property taxes in Port O Connor, 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 Port O Connor's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Port O Connor, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Port O Connor, Calhoun County, Texas Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.56%
Estimate Property Tax Bill
$4,003
$3,714
How Does the Port O Connor Property Tax Calculator Work?
Use this Port O Connor property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Port O Connor's median effective tax rate of 1.56% — based on actual property records in Calhoun 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 Port O Connor'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 Port O Connor: rates range from 1.56% in 77982 to 1.56% in 77982, 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 Port O Connor.
About Port O Connor Property Taxes
About Property Taxes in Port O Connor, Calhoun, Texas
Port O Connor's median effective property tax rate of 1.56% is higher than the Texas state median of 1.48% and higher than the national median of 1.02%. This rate reflects the Calhoun 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 Port O Connor. Homeowners in the 77982 ZIP code carry a median effective rate of 1.56%, while those in the 77982 pay 1.56%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Calhoun County. Understanding which part of Port O Connor you live in can make a meaningful difference to your annual tax bill.
Port O Connor 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 Port O Connor, Calhoun 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 Port O Connor'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 Port O Connor Tax Rate
1.56%
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 Calhoun County Tax Rate
1.55%
Median Effective Texas Tax Rate
1.48%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Port O Connor, Calhoun County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 77982 | 1.20% | 1.36% | 1.56% | 1.73% | 1.85% |
Source: Ownwell
Property Tax Assessment Values Across Port O Connor, Calhoun County, Texas
When examining property taxes in Port O Connor, 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 Calhoun 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 Calhoun 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. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Port O Connor.
For example, the median home price in Port O Connor is $256,580, with tax bills ranging significantly across the county. 77982 has the highest median home price at $256,580.
Property Tax Assessment Values Across Port O Connor, Calhoun County, Texas
Source: Ownwell
$89,030
$172,805
$256,580
Median Port O Connor Market Value
$256,580
Median Calhoun County Market Value
$123,420
Median Texas Market Value
$258,851
Median United States Market Value
$235,294
Property Tax Assessment Values Across Port O Connor, Calhoun County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 77982 | $73,770 | $149,838 | $256,580 | $436,630 | $763,637 |
Source: Ownwell
Property Tax Bills Across Port O Connor, Calhoun County, Texas
Property tax bills in Port O Connor are based on the assessed value of a home and the local tax rates set by the county and other taxing entities. When a property’s market value rises, the assessed value can increase too, which may lead to a higher tax bill. For homeowners, this means the amount due can change from year to year even if the home itself has not changed.
In Calhoun County, the median home price is $256,580, and the median property tax bill is $3,740, which is above the national median property tax bill of $2,400. Tax bills can vary widely, with the 25th percentile at $2,096 and the 75th percentile at $6,631, while the 90th percentile reaches $11,333. These differences show how location, assessed value, and local tax rates combine to shape what homeowners pay.
Median Port O Connor Tax Bill
$3,740
Median Calhoun County Tax Bill
$1,835
Median Texas Tax Bill
$3,441
Median United States Tax Bill
$2,400
Property Tax Bills Across Port O Connor, Calhoun County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 77982 | $1,124 | $2,096 | $3,740 | $6,631 | $11,333 |
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 | |
|---|---|
| Calhoun Appraisal District | |
| Website | esearch.calhouncad.org |