Property Tax Resources · Irion County, Texas
West Texas sheep and Permian Basin country — Irion County’s 0.70% effective rate is among the lowest in Texas, but with fewer than 1,500 residents, even a modest rate on Permian-adjacent land can produce meaningful bills.
Sources: Population — U.S. Census Bureau ACS 2024 estimates; County Debt — Texas Bond Review Board (FY2025)
🔴 2026 Protest Deadline: May 15, 2026 — or 30 days after your Notice of Appraised Value is mailed, whichever is later. Miss this date and you waive your right to protest.
Irion County is one of the smallest and most remote counties in Texas, with Mertzon as its county seat and fewer than 1,500 residents scattered across 1,000 square miles of West Texas ranch land. The county sits just east of the Permian Basin’s most active production zones, and has seen some oil and gas exploration activity alongside its traditional sheep, goat, and cattle ranching economy.
At 0.70%, Irion County carries one of the lowest effective rates in Texas — but on mineral interests and ranch land that has seen Permian Basin activity nearby, even a low rate on an inflated base produces unnecessary bills. In counties this small, few protests are filed and valuation errors can persist unchallenged for years. Your deadline is May 15, 2026.
Official CAD site — appraisal notices, exemption applications, and district contact information.
Search your property record, view current appraised value, and verify exemption status.
Irion County Appraisal District protest procedures, online filing portal, and deadline information for the current year.
Every taxing entity’s proposed rate, adopted rate, and public hearing schedule for Irion County.
Enter the date your Notice of Appraised Value was mailed to find your exact filing deadline.
Every taxing unit in Irion County must publish its proposed rate and hold a public hearing before adopting any rate exceeding the no-new-revenue rate. These meetings are open. Your voice is on the record.
View Irion County Tax Rates →| Taxing Entity | Type | Rate (2025 adopted) |
|---|---|---|
| Irion County | County | $0.5697/$100 |
| Irion County ISD | School District | $0.8650/$100 |
2025 adopted rates per Texas Comptroller Tax Rates & Levies (source). City, MUD, college and other special-district rates may also apply depending on your parcel. Your total depends on which districts your property falls in — verify current rates at your county appraisal district.
What your Notice means and exactly what to do — and by when — after it arrives.
How the Texas homestead exemption lowers your taxable value, including recent changes.
When a property tax consultant is worth it for protesting your appraisal.
Lesser-known special valuations that can cut the taxable value of qualifying land.
The state office that oversees appraisal districts and protects taxpayers.
Who sets your county’s values and why that role matters to your bill.
Search your account at irioncad.org. Know your Notice of Appraised Value and the deadline printed on it.
File online, by mail, or in person at Irion County Appraisal District: P.O. Box 736, Mertzon, TX 76941. Deadline: May 15, 2026 or 30 days after your notice was mailed.
Recent sales of comparable properties, your purchase price, photos of condition issues, and repair estimates all strengthen your case.
Before your ARB hearing, a CAD appraiser may offer to settle. Review any offer carefully — you can accept or proceed to the formal hearing.
The Appraisal Review Board is independent of the CAD. Present your evidence clearly and concisely. Most hearings run 15–30 minutes.
Disagree with the ARB ruling? You may appeal to district court, binding arbitration, or SOAH (properties over $1 million).
“No person’s particular services shall be demanded, nor property taken or applied to public use, unless by the consent of himself or his representative, without just compensation being made therefor.”
— Section 13, Declaration of Rights, Republic of Texas, 1836Irion County is the kind of Texas most people don’t know exists — deep West Texas, small population, big sky, honest work on difficult land. The founders wrote the Declaration of Rights without a population minimum — it protects the rancher in Mertzon as fully as the homeowner in Houston. A 0.70% rate on Permian-adjacent land values that may not reflect what the surface actually produces is worth a look. Look up your value. File your protest. The right belongs to you regardless of how few neighbors you have.
For informational and educational purposes only. Property-Taxes-Texas.com is a citizen advocacy and education resource. Nothing on this site constitutes legal, financial, tax, or appraisal advice. We are not attorneys, CPAs, or licensed appraisers. Consult a licensed Texas attorney, qualified financial advisor, or certified appraiser for guidance specific to your situation. Deadlines, rates, and statutes are subject to change — verify all details with your county appraisal district or the Texas Comptroller before acting.
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