Port Isabel, TX—78578
Real Estate Data & Market Trends
Key Metrics at a Glance
Home Price Trends — Port Isabel, TX
As of Oct '25, the median home price in Port Isabel, TX is $257,000, with a year-over-year change of -3.2%. This indicates that home prices in Port Isabel, TX are decreasing. According to Zillow, the 1-year price projection is 2.0%, suggesting an increase housing market in the next year.
Cost per Home Type
| Home Type | Median Home Value | YoY % Change |
|---|---|---|
All Homes | $257,000 | -3.3% |
| Single Family | $273,000 | -3.2% |
| Condos | $213,000 | -4.9% |
Cost per Home Size
| Home Size | Median Home Value | YoY % Change |
|---|---|---|
1 Bed | $160,000 | -5.9% |
2 Bed | $223,000 | -5.1% |
3 Bed | $345,000 | -2.5% |
4 Bed | $474,000 | -1.2% |
| 5 Bed | N/A | N/A |
% of Housing Stock
Rental Trends — Port Isabel, TX
As of July '25, Rentcast reports the average rent in Port Isabel, TX is $2,330, with a year-over-year rent change of 8.4%. Per bedroom, the median rent as of July '25 in Port Isabel, TX is studios: $1,000, 1-bedrooms: $1,490, 2-bedrooms: $2,070, 3-bedrooms: $2,500, 4-bedrooms: $4,680. The most common rental property sizes in Port Isabel, TX are 2-bedroom and 3-bedroom, accounting for 67.3% and 16.5% of the rental stock.
| Type | Median Rent | Average Rent |
|---|---|---|
| Average Rent | $2,000 | $2,330 |
| Studio Rent | $1,000 | $1,000 |
| 1 Bed Rent | $1,350 | $1,490 |
| 2 Bed Rent | $1,950 | $2,070 |
| 3 Bed Rent | $2,500 | $2,500 |
| 4 Bed Rent | $2,800 | $4,680 |
% of Rental Stock
Property Listings — Port Isabel, TX
As of Oct '25, Realtor.com reports that the median days on market for a home in Port Isabel, TX is 81. This is a increase of 13.0% from last year, suggesting that homes are sitting on the market longer than last year. The percentage of listed homes with a reduced price is 11.0%, representing a small inventory and little supply pressure on home prices.
| Metric | Zip Code Average | Year over Year % Change |
|---|---|---|
Median Listing Price | $375,000 | 10.0% |
Listing Count | 186 | 7.0% |
| Listings as % of Homes | 1.9% | 7.0% |
Days on Market | 81 | 13.0% |
Demographics — Port Isabel, TX
As of the latest ACS Survey released in 2023, Port Isabel, TX has a population of 10,200, which has decreased by -12.4% over the past 5 years. Port Isabel, TX is a moderately popular place for families, as children make up 20.0% of the population. The area has a poorly educated workforce, with 24.5% of adult residents holding a bachelor’s degree or higher. There are few residents working remotely, with 7.7% reporting working from home.
| Metric | Latest Census | YoY % Change |
|---|---|---|
Population | 10,200 | -12.4% |
% Under 18 | 20.0% | -17.7% |
% Seniors | 26.8% | 28.8% |
% WFH | 7.7% | 541.7% |
% w/ College Degree | 24.5% | 40.8% |
As of the latest ACS Survey released in 2023, Port Isabel, TX is a predominantly hispanic area, with 63.1% of the population identifying as hispanic. The hispanic population has shrunk by 9.5% in the last 5 years. The second most common race or ethnicity in Port Isabel, TX is white, making up 34.9% of the population. Foreign-born residents account for 17.9% of the population in Port Isabel, TX, and this percentage has decreased by 32.5% as of the ACS Survey 5 years prior, suggesting fewer immigrants are calling the area home.
Race and Ethnicity
| Metric | Latest Census | 5-Year % Change |
|---|---|---|
% White | 34.9% | 26.4% |
% Black | 0.0% | -100.0% |
% Hispanic | 63.1% | -9.5% |
% Asian | 0.3% | -57.1% |
% Foreign Born | 17.9% | -32.5% |
Mortgage and Risk — Port Isabel, TX
According to HUD data as of 2023, there were 156 mortgage originations in Port Isabel, TX, of which 81.0% of loans were conventional mortgages. The average loan-to-value was 72.0%, with 28.0% above 90% LTV (very high). This implies large mortgage risk in Port Isabel, TX. Investor activity is low, as 4.0% of loans were by investors. 8.0% of loans were cash-out refinances, suggesting few homeowners are tapping equity.
Mortgages
| Metric | Zip Code Average |
|---|---|
Total Loan Originations | 156 |
% Conventional Loans | 81.0% |
% Government Loans | 19.0% |
% Investor Loans | 4.0% |
% Second Loans | 15.0% |
% Cash Out Refinance | 8.0% |
Loan Activity
Rentals and Section 8 — Port Isabel, TX
As of 2024, the percent of homes in Port Isabel, TX under the Section 8 program is 17.4%. This is considered high, suggesting that the neighborhood is heavily composed of Section 8 homes. Section 8 opportunity is good when HUD pays more than market rent. In Port Isabel, TX, none of the tracked home sizes currently have HUD payment amounts above market rent, suggesting limited Section 8 opportunity.
Section 8 Market Size
Total Units under HUD | 253 |
Total Units Section 8 | 173 |
% Rentals under Section 8 | 17.4% |
% Occupied Section 8 | 86.6% |
Section 8 Opportunity
| Home Size | HUD Premium | Market Rent | Max HUD Rent |
|---|---|---|---|
| 1 Bedroom | -$610 | $1,350 | $740 |
| 2 Bedroom | -$1,020 | $1,950 | $930 |
| 3 Bedroom | -$1,260 | $2,500 | $1,240 |
| 4 Bedroom | -$1,510 | $2,800 | $1,290 |
Affordability — Port Isabel, TX
Home Price to Income Ratio
| Metric | Zip Code Average |
|---|---|
| Home Price to Income Ratio | 4.7 |
| Median Home Price | $257,000 |
| Median Household Income | $52,000 |