Real Estate Investing in Port Isabel, Texas (78578)
Everything the listing leaves out — vacancy, rent trend, cap rate, landlord climate. All free.
Should you buy in 78578 (Port Isabel, TX)? Our answer, based on the numbers below.
Mixed — home prices are stretched relative to local incomes. Run the math on your specific situation.
A middle-of-the-road market. Workable, but the best opportunities may be nearby ZIPs rather than this one.
- High vacancy: 35.4% of homes vacant — above national norms.
- Elevated poverty: 20.6% poverty rate — can affect rent collection.
What’s happening in Port Isabel, TX (78578)?
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Market Analysis: 78578 Port Isabel
The 78578 ZIP in Port Isabel, TX is a local-operator market. Outside capital chasing a $263K entry has to pair deep knowledge with the discount.
For an experienced owner, 78578 can be a a viable market for hunting ground — but the discount at $263K reflects genuine risk that outside investors often underestimate.
ZIP 78578's metrics run below Cameron County's averages on price growth and tenant stability. Investors who ignore that regional gap tend to relearn it the hard way.
Who lives in 78578 is part of why the ZIP is priced as it is. The demographic profile requires hands-on management, tight screening, and local knowledge.
The 78578 ZIP fits a narrow investor profile — hands-on, patient, and willing to accept that the cap rate on paper is not the cap rate in reality.
Here's what matters if you're considering buying a home in Port Isabel:
Property Strategy for 78578
Which property type performs best in this market?
📊 Compare All Property Types →
| Type | Median Value | Est. Rent | Cap Rate | 5yr CAGR | $/Bedroom |
|---|---|---|---|---|---|
| 1BR | $160,364 | $800 | 3.6% | +12.7% | $160,364 |
| 2BR | $222,951 | $970 | 3.1% | +8.4% | $111,476 |
| 3BR | $344,862 | $1,310 | 2.7% | +9.4% | $114,954 |
| 4BR | $474,482 | $1,370 | 2.1% | +10.0% | $118,620 |
Market Trends
Home Value History (with trend line)
Rent History (with trend line)
📊 How Does 78578 Compare?
| Metric | 78578 | Port Isabel | Brownsville-Harlingen, TX | Texas |
|---|---|---|---|---|
| Home Value | $262,941 | $262,941 | N/A | $297,000 |
| 5-Year CAGR | 6.6% | 6.6% | N/A | 5.4% |
| Avg Rent | $1,985 | $1,985 | N/A | - |
| Cap Rate | 5.9% | 5.9% | - | - |
Similar ZIPs Within 25 Miles
Compare other nearby markets to see if a neighbor offers a better fit.
Landlord Ground Truth
Real numbers from people who own or manage rentals in ZIP 78578 (Port Isabel, TX). Anonymous, moderated, never written by AI.
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📊 Market Snapshot
| Home Value | $262,941 |
| Monthly Rent | $1,985 |
| Price-to-Rent | 11.0:1 |
| 1% Rule | ✗ Fails |
💰 Return Metrics
| Gross Yield | 9.1% |
| Cap Rate | 5.9% |
| 5-Year IRR | 12.4% |
📈 Home Appreciation
| 1-Year | +1.9% ▲ |
| 3-Year CAGR | -0.3% ▼ |
| 5-Year CAGR | +6.6% ▲ |
| 10-Year CAGR | +5.2% ▲ |
🏠 Rent Trends
| 1-Year | N/A |
| 3-Year CAGR | N/A |
| 5-Year CAGR | N/A |
The current 30-yr mortgage rate (6.8%) exceeds the estimated cap rate (5.9%). Financing reduces your cash-on-cash return below the cap rate. Markets like this may still make sense as IRR plays — factoring in appreciation, depreciation, and a future refinance when rates drop.
Run an IRR Analysis →⚠️ Risk Signals
Composite view of factors that can impact a ZIP's stability and your downside risk.
Demographics in 78578
Population: 10,231
Crime & Safety
Crime & Safety Data Coming Soon
We're integrating comprehensive crime statistics including violent crime rates, property crime, and safety scores to help you make informed investment decisions.
Expected: Q1 2025
🎓 Schools in 78578
Schools in This ZIP Code
About Repit School Scores
Traditional school ratings rely heavily on standardized test scores, which often reflect family income more than school quality. Repit takes a different approach.
We evaluate schools based on factors that research shows actually impact educational outcomes:
- Class Size — Smaller classes mean more individual attention
- School Funding — Resources available for programs, staff, and facilities
- Community Factors — Neighborhood characteristics that influence student success
- School Environment — Size, type, and structure
Scores are updated annually using federal education data.
🎓 Nearby Colleges & Universities
Frequently Asked Questions
How much is rent in Port Isabel, TX?
Port Isabel, TX rentals go for roughly $1,985/mo a month. That puts gross yield in solid territory relative to $263K acquisition costs.
Should investors worry about vacancy in Port Isabel, TX?
Port Isabel, TX sees elevated vacancy, which is reasonable relative to the broader TX rental market.
Is Port Isabel, TX a good market for buy-and-hold investors?
Investors tracking Port Isabel, TX will find a 3.0/5 rating supported by $263K median home values and $1,985/mo rents. That profile suits long-term holders targeting reliable returns.
How viable is house hacking in Port Isabel, TX?
House hacking in Port Isabel, TX is a challenging. With home values around $263K and rents at $1,985/mo, owner-occupants can offset a meaningful share of PITI.
Is Port Isabel, TX landlord-friendly?
TX ranks as a landlord-friendly state for landlord-tenant law. Port Isabel generally follows the statewide framework, so landlords face reasonable operating rules.
You know 78578 now. You don’t know where it ranks.
This page stays free — all of it. What one page can’t tell you is how 78578 compares to every other market. Investor ($19/mo) screens every U.S. ZIP by cap rate, the 1% rule, vacancy and landlord climate, and exports your shortlist.
How 78578 ranks in Brownsville-Harlingen, TX
Every ZIP in this metro, ranked. Free.
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