House Prices

House Prices & Home Values Port Isabel, TX 2026


Average Data

average house price$310,040
average size per house2052 ft²
average price per ft²152 $ / ft²

05/23/2026 - The value range (VR) for house prices in Port Isabel, TX is $160/ sqft to $160/ sqft. An average home with 2052 sqft costs approximately $328,320 to $328,320. Port Isabel, TX includes 1 ZIP codes and it is located in Cameron county. The lowest prices are found in ZIP 78578, while the highest are in ZIP 78578. The average price per sqare feet is $152. Our analysis is based on 16 property listings.

Avergage prices by ZIP codes Port Isabel

78578156 $ / ft²




Historical development of home values in Port Isabel

Year Estimated value (USD) Change vs. 2025
2010 $143,988 -53.6%
2011 $138,420 -55.4%
2012 $138,047 -55.5%
2013 $143,207 -53.8%
2014 $150,328 -51.5%
2015 $158,044 -49.0%
2016 $166,291 -46.4%
2017 $175,267 -43.5%
2018 $184,957 -40.3%
2019 $193,533 -37.6%
2020 $203,537 -34.4%
2021 $231,502 -25.3%
2022 $269,879 -13.0%
2023 $284,600 -8.2%
2024 $301,065 -2.9%
2025 $310,040 0.0%

Graph: estimated home values in Port Isabel over time (USD)



Example: 100% financing house in Port Isabel

Loan amount: $310,040

Interest rate: 6.00%

Fixed monthly payment: $1,858.85

Breakdown in the 1st month:
Interest portion: $1,550.20  –  Principal portion: $308.65

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $18,498.83 $3,807.33 $306,232.67
2 $18,264.00 $4,042.16 $302,190.52
3 $18,014.69 $4,291.47 $297,899.05
4 $17,750.00 $4,556.15 $293,342.90
5 $17,468.99 $4,837.17 $288,505.73
6 $17,170.64 $5,135.51 $283,370.21
7 $16,853.90 $5,452.26 $277,917.95
8 $16,517.61 $5,788.55 $272,129.41
9 $16,160.59 $6,145.57 $265,983.84
10 $15,781.54 $6,524.62 $259,459.22
11 $15,379.12 $6,927.04 $252,532.18
12 $14,951.87 $7,354.28 $245,177.90
13 $14,498.28 $7,807.88 $237,370.02
14 $14,016.70 $8,289.45 $229,080.57
15 $13,505.43 $8,800.73 $220,279.84
16 $12,962.62 $9,343.54 $210,936.30
17 $12,386.33 $9,919.83 $201,016.47
18 $11,774.50 $10,531.66 $190,484.81
19 $11,124.93 $11,181.23 $179,303.58
20 $10,435.29 $11,870.86 $167,432.72
21 $9,703.12 $12,603.03 $154,829.69
22 $8,925.80 $13,380.36 $141,449.33
23 $8,100.53 $14,205.63 $127,243.69
24 $7,224.35 $15,081.80 $112,161.89
25 $6,294.14 $16,012.02 $96,149.87
26 $5,306.55 $16,999.60 $79,150.27
27 $4,258.06 $18,048.10 $61,102.17
28 $3,144.89 $19,161.27 $41,940.90
29 $1,963.06 $20,343.09 $21,597.81
30 $708.35 $21,597.81 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Port Isabel, TX


1500 sqft3900 sqft
Ø selling price$275,881$586,872
Ø fast selling$250,801$528,185
Ø high price sale$300,960$645,560

In 2026, houses in Port Isabel, TX will be offered at an average price of $152 per square foot. A 1,500 sqft home priced at $275,881 is 22.38% more expensive per square foot than a 3,900 sqft home priced at $586,872. Home prices in Port Isabel, TX vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $406,297. Sellers who can wait longer may achieve a higher price of up to $496,585.

FAQ – Home Values in Port Isabel

What is the median home value in Port Isabel in 2026?

In 2026, the typical home value in Port Isabel is about $310,040 for an average home size of 2052 square feet. This corresponds to an average price of roughly $152 per square foot.

What is the average cost per square foot in Port Isabel?

In 2026, homes in Port Isabel sell for an average of around $152 per square foot, with a typical range between $160 and $160 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Port Isabel is about 2052 square feet, with an estimated 2026 value around $310,040.



Locations close to Port Isabel, TX

Progreso, TX73 $ / ft²
Raymondville, TX80 $ / ft²
Rio Grande City, TX107 $ / ft²
Pharr, TX128 $ / ft²
Penitas, TX96 $ / ft²
Olmito, TX120 $ / ft²
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