78578 Property Tax Rate

Property owners in ZIP code 78578 (Port Isabel, Texas) pay a median of $2,686/year in property taxes on homes valued at $193,700. This translates to an effective tax rate of 1.39%, which is near the Texas state average of 1.35%.

The monthly property tax burden for a median-valued home in 78578 is approximately $224, which factors into escrow payments on mortgages. This ZIP code is located within Cameron County. This is $445 less than the Texas average of $3,131/year.

Compared to similar ZIP codes in Texas, 78578 has lower property taxes. ZIP codes with similar effective rates include 76305 (1.39%) and 77962 (1.39%).

In Port Isabel, property taxes represent approximately 5.2% of the median household income of $52,041, providing context for the relative tax burden on homeowners in this area.

Texas law limits homestead appraisal growth to 10% annually, but you must file your Homestead Exemption application with the Cameron County Appraisal District by April 30 of the year following your purchase to activate this cap. The exemption reduces your school tax burden by removing a portion of assessed value, saving most Cameron County homeowners $400–$700/year. Request your Notice of Appraised Value after closing and submit a protest to the Cameron CAD by May 15 if the valuation appears above fair market value.