Active Listings
177
⇩ 2.2% vs 181 last year
Data as of September 2026. Source: Realtor.com.
The PORT ISABEL, TX real estate market (78578) currently shows 177 active listings, with 26 pending sales. Homes are averaging 88 days on the market before going under contract.
Inventory has tightened compared to last year, with 4 fewer active listings — creating more competition among buyers.
Homes are selling faster, averaging 88 days on market compared to 107 days last year.
The median listing price has fallen 12.2% year-over-year, from $370,000 to $324,750.
Population: 10,540 · Density: 71.5/mi² · Median household income: $49,396
Typical home value: $176,018 · Homeownership: 69.9%
| Zip | City / State | Distance | Listings | Market Value | Median $ | Average $ |
|---|---|---|---|---|---|---|
| 78578 | Port Isabel, TX 78578 | 0.0 mi | 184 | $78,431,840 | $303,000 | $426,260 |
| 78566 | Los Fresnos, TX 78566 | 9.0 mi | 78 | $26,937,066 | $326,250 | $345,347 |
| 78568 | Lozano, TX 78568 | 11.2 mi | 1 | $95,000 | $95,000 | $95,000 |
| 78597 | South Padre Island, TX 78597 | 15.1 mi | 377 | $241,371,611 | $498,000 | $640,243 |
| 78583 | Rio Hondo, TX 78583 | 18.6 mi | 29 | $13,974,085 | $391,000 | $481,865 |
| 78550 | Harlingen, TX 78550 | 26.0 mi | 210 | $55,050,660 | $239,950 | $262,146 |
| 78552 | Harlingen, TX 78552 | 29.1 mi | 247 | $90,787,814 | $288,000 | $367,562 |
| 78559 | La Feria, TX 78559 | 32.7 mi | 97 | $27,195,211 | $266,175 | $280,363 |
| 78592 | Santa Maria, TX 78592 | 33.3 mi | 2 | $269,500 | $134,750 | $134,750 |
| 78593 | Santa Rosa, TX 78593 | 35.1 mi | 14 | $2,481,598 | $149,500 | $177,257 |
| 78579 | Progreso, TX 78579 | 39.6 mi | 2 | $780,000 | $390,000 | $390,000 |
| 78580 | Raymondville, TX 78580 | 41.2 mi | 20 | $5,184,640 | $218,750 | $259,232 |
| 78599 | Weslaco, TX 78599 | 43.7 mi | 131 | $35,464,189 | $257,725 | $270,719 |
As of September 2026, there are 177 active listings in PORT ISABEL, TX (zip code 78578), compared to 181 the prior year.
The median listing price in PORT ISABEL, TX 78578 is $324,750 as of September 2026, a 12.2% decrease from $370,000 the prior year.
Homes in PORT ISABEL, TX 78578 spend an average of 88 days on the market before going under contract, compared to 107 days the prior year.
Based on current inventory and days-on-market data as of September 2026, PORT ISABEL, TX 78578 is currently a Seller's Market. Inventory has tightened compared to last year, with 4 fewer active listings — creating more competition among buyers. Homes are selling faster, averaging 88 days on market compared to 107 days last year.
With SELL123.com's maximum 3% commission, sellers in PORT ISABEL, TX 78578 save an estimated $6,495 compared to a typical 5% commission on the median listing price of $324,750. Our fee structure: 1% listing + 2% selling broker — no additional buyer or seller fees. Call (240) SELL-123 or email info@SELL123.com for a free consultation.