Active Listings
182
⇩ 19.8% vs 227 last year
Data as of March 2026. Source: Realtor.com.
The PORT ISABEL, TX real estate market (78578) currently shows 182 active listings, with 30 pending sales. Homes are averaging 90 days on the market before going under contract.
Inventory has tightened compared to last year, with 45 fewer active listings — creating more competition among buyers.
Homes are selling faster, averaging 90 days on market compared to 94 days last year.
The median listing price has fallen 9.1% year-over-year, from $340,000 to $309,000.
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 March 2026, there are 182 active listings in PORT ISABEL, TX (zip code 78578), compared to 227 the prior year.
The median listing price in PORT ISABEL, TX 78578 is $309,000 as of March 2026, a 9.1% decrease from $340,000 the prior year.
Homes in PORT ISABEL, TX 78578 spend an average of 90 days on the market before going under contract, compared to 94 days the prior year.
Based on current inventory and days-on-market data as of March 2026, PORT ISABEL, TX 78578 is currently a Seller's Market. Inventory has tightened compared to last year, with 45 fewer active listings — creating more competition among buyers. Homes are selling faster, averaging 90 days on market compared to 94 days last year.
With SELL123.com's maximum 3% commission, sellers in PORT ISABEL, TX 78578 save an estimated $6,180 compared to a typical 5% commission on the median listing price of $309,000. 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.