Active Listings
190
⇩ 5.9% vs 202 last year
Population: 10,540 · Density: 71.5/mi² · Median household income: $49,396
Typical home value: $176,018 · Homeownership: 69.9%
Data as of January 2026. Source: Realtor.com.
The PORT ISABEL, TX real estate market (78578) currently shows 190 active listings, with 38 pending sales. Homes are averaging 93 days on the market before going under contract.
Inventory has tightened compared to last year, with 12 fewer active listings — creating more competition among buyers.
Homes are selling faster, averaging 93 days on market compared to 101 days last year.
The median listing price has fallen 0.8% year-over-year, from $322,450 to $320,000.
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.
| Zip | City / State | Distance | Listings | Market Value | Median $ | Average $ |
|---|---|---|---|---|---|---|
| 78578 | Port Isabel, TX 78578 | 0.0 mi | 190 | $81,688,030 | $320,000 | $429,937 |
| 78566 | Los Fresnos, TX 78566 | 9.0 mi | 69 | $23,545,146 | $317,500 | $341,234 |
| 78568 | Lozano, TX 78568 | 11.2 mi | 1 | $95,000 | $95,000 | $95,000 |
| 78597 | South Padre Island, TX 78597 | 15.1 mi | 358 | $230,655,462 | $489,000 | $644,289 |
| 78583 | Rio Hondo, TX 78583 | 18.6 mi | 28 | $14,224,000 | $510,000 | $508,000 |
| 78550 | Harlingen, TX 78550 | 26.0 mi | 194 | $51,063,904 | $240,000 | $263,216 |
| 78552 | Harlingen, TX 78552 | 29.1 mi | 224 | $84,194,880 | $299,900 | $375,870 |
| 78559 | La Feria, TX 78559 | 32.7 mi | 97 | $27,643,060 | $262,500 | $284,980 |
| 78592 | Santa Maria, TX 78592 | 33.3 mi | 2 | $269,500 | $134,750 | $134,750 |
| 78593 | Santa Rosa, TX 78593 | 35.1 mi | 14 | $2,575,622 | $159,000 | $183,973 |
| 78579 | Progreso, TX 78579 | 39.6 mi | 2 | $780,000 | $390,000 | $390,000 |
| 78580 | Raymondville, TX 78580 | 41.2 mi | 18 | $7,189,200 | $232,500 | $399,400 |
| 78599 | Weslaco, TX 78599 | 43.7 mi | 126 | $34,400,016 | $259,500 | $273,016 |
As of January 2026, there are 190 active listings in PORT ISABEL, TX (zip code 78578), compared to 202 the prior year.
The median listing price in PORT ISABEL, TX 78578 is $320,000 as of January 2026, a 0.8% decrease from $322,450 the prior year.
Homes in PORT ISABEL, TX 78578 spend an average of 93 days on the market before going under contract, compared to 101 days the prior year.
Based on current inventory and days-on-market data as of January 2026, PORT ISABEL, TX 78578 is currently a Seller's Market. Inventory has tightened compared to last year, with 12 fewer active listings — creating more competition among buyers. Homes are selling faster, averaging 93 days on market compared to 101 days last year.
With SELL123.com's maximum 3% commission, sellers in PORT ISABEL, TX 78578 save an estimated $6,400 compared to a typical 5% commission on the median listing price of $320,000. 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.