Castro County, TX Property Tax: $1,067/yr (2026)
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The effective property tax rate in Castro County is 1.12% of assessed home value. On a home at the county median value of $94,900, that works out to about $1,063 per year, or $89 per month. Castro County is located in northwestern Texas, and is home to approximately 7,328 residents.
About Castro County
Castro County covers approximately 894.4 square miles in Texas. The county is home to about 7,328 residents living in roughly 3,026 housing units, of which 55.5% are owner-occupied. The median household income is $63,485, and the median home was built in 1966.
Castro County borders Deaf Smith County, Hale County, Lamb County, Parmer County, Randall County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Texas
Property taxes in Texas are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Texas offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Castro County Assessor's office to learn which exemptions apply to your property and when to file.
Castro County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Castro County, TX | 1.12% | $94,900 | $1,063 |
| Texas state average | 1.28% | — | $1,215* |
| Deaf Smith County | 1.37% | $116,000 | $1,590 |
| Hale County | 1.39% | $106,100 | $1,471 |
| Lamb County | 1.19% | $76,600 | $913 |
| Parmer County | 1.57% | $127,300 | $1,994 |
| Randall County | 1.58% | $227,500 | $3,587 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Castro County's median home value of $94,900. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Castro County's property tax rate compare to the rest of Texas?
At 1.12%, Castro County is lower than the Texas state average of 1.28%. On a home at the county median of $94,900, that means about $1,063 per year — versus $1,215 at the state average rate, a difference of $152 per year. Compared to the national average of 1.10%, Castro County is above average.
What's a typical annual property tax bill in Castro County?
For a home at the county median value of $94,900, the annual property tax in Castro County is approximately $1,063 — or about $89 per month. For a home worth $142,350, expect around $1,594 per year. For a $189,800 home, approximately $2,126 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Castro County property tax assessment?
Property assessment appeals in Castro County are handled by the Castro County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Castro County?
Texas counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 1.12% shown here. Contact the Castro County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File