Active Listings
185
⇩ 7.5% vs 200 last year
Data as of June 2026. Source: Realtor.com.
The PORT ISABEL, TX real estate market (78578) currently shows 185 active listings, with 30 pending sales. Homes are averaging 86 days on the market before going under contract.
Inventory has tightened compared to last year, with 15 fewer active listings — creating more competition among buyers.
Homes are selling faster, averaging 86 days on market compared to 113 days last year.
The median listing price has fallen 11.1% year-over-year, from $357,000 to $317,350.
Whether you are buying or selling in PORT ISABEL, TX, SELL123.com can help you save significantly on commission — typically 2% compared to traditional 5% broker fees. Call (240) SELL-123 for a free consultation.
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 June 2026, there are 185 active listings in PORT ISABEL, TX (zip code 78578), compared to 200 the prior year.
The median listing price in PORT ISABEL, TX 78578 is $317,350 as of June 2026, a 11.1% decrease from $357,000 the prior year.
Homes in PORT ISABEL, TX 78578 spend an average of 86 days on the market before going under contract, compared to 113 days the prior year.
Based on current inventory and days-on-market data as of June 2026, PORT ISABEL, TX 78578 is currently a Seller's Market. Inventory has tightened compared to last year, with 15 fewer active listings — creating more competition among buyers. Homes are selling faster, averaging 86 days on market compared to 113 days last year.
With SELL123.com's maximum 3% commission, sellers in PORT ISABEL, TX 78578 save an estimated $6,347 compared to a typical 5% commission on the median listing price of $317,350. 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.