Zip Code 78566
Los Fresnos, Texas — Cameron County
📍 ZIP code 78566 is in Los Fresnos, Cameron County, Texas.
ZIP code 78566 is located in Los Fresnos, Cameron County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 24,927. The area code for ZIP code 78566 is 979.
Quick Answer
Zip code 78566 is in Los Fresnos, Texas (Cameron County). It has a population of 24,927, median household income of $64,385, and median home value of $138,100.
Population
24,927
Income
$64,385
Home Value
$138,100
Climate
92°F / 52°F
About Zip Code 78566
Zip code 78566 is located in Los Fresnos, Texas, within Cameron County. Home to approximately 24,927 residents, this area sits at an elevation of 11 ft and falls within the Central (CST/CDT) timezone. The local area code is 979.
The median household income is $64,385 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $138,100, and the cost of living index is 60 (40% below the national average of 100).
Summers average a high of 92°F while winters drop to 52°F. The area receives about 23 in of rain annually. The zip code covers 115.1 square miles of land area and 51.4 square miles of water.
Key Statistics
24,927
$64,385
$138,100
Central (CST/CDT)
979
11 ft
115.1 sq mi
34.1
8,275
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Compare With Nearby Zip Codes
| Metric | 78566 | 78578 | 78597 | 78583 | 78526 | 78575 |
|---|---|---|---|---|---|---|
| City | Los Fresnos, TX | Port Isabel, TX | South Padre Island, TX | Rio Hondo, TX | Brownsville, TX | Brownsville, TX |
| Population | 24,927 | 10,231 | 2,881 | 5,472 | 59,719 | 4,728 |
| Median Income | $64,385 | $52,041 | $61,357 | $61,315 | $68,143 | $74,273 |
| Home Value | $138,100 | $193,700 | $508,800 | $147,500 | $158,300 | $220,400 |
| Cost of Living | 60 | 66 | 117 | 60 | 67 | 75 |
| Median Age | 34.1 | 48.2 | 59.2 | 46.3 | 29.2 | 40.5 |
Cost of Living
100 = National Average. Los Fresnos's cost of living is 40% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.1x
Demographics
Zip code 78566 has a population of 24,927 people with a median age of 34.1. There are 8,275 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Los Fresnos (78566) population trend from 2010 to 2024
↓ -25.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
92°F
52°F
23 in
0 in
Los Fresnos experiences hot summers with average highs around 92°F. Winters are mild with lows averaging 52°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$138,100
Median Household Income
$64,385
With 8,275 housing units across 115.1 square miles, 78566 has a housing density of 72 units per square mile. The home price-to-income ratio is 2.1x.
Location & Geography
Latitude
26.1484°
Longitude
-97.3704°
Land Area
115.1 sq mi
Water Area
51.4 sq mi
Nearby Zip Codes
Zip codes closest to 78566 (Los Fresnos, TX) with distances:
Related Cities in Texas
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 78566's $64,385. A way to compare Los Fresnos to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 78566 (Los Fresnos, TX). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Los Fresnos, Texas?
Los Fresnos, Texas uses zip code 78566.
What county is zip code 78566 in?
Zip code 78566 is located in Cameron County, Texas.
What is the population of zip code 78566?
The population of zip code 78566 is 24,927 with a median age of 34.1.
Is 78566 in Los Fresnos, Texas?
Yes, zip code 78566 is in Los Fresnos, Cameron County, Texas. The area code is 979.
Frequently Asked Questions
What city is zip code 78566 in?
Zip code 78566 is in Los Fresnos, Texas. It is part of Cameron County and uses the Central (CST/CDT) timezone.
What is zip code 78566?
Zip code 78566 is a U.S. postal code in Los Fresnos, Texas (Cameron County). It has a population of 24,927 and covers 115.1 square miles.
What is the population of zip code 78566?
The population of zip code 78566 (Los Fresnos, TX) is 24,927 with a median age of 34.1. There are approximately 8,275 housing units in this area.
What is the median income in zip code 78566?
The median household income in zip code 78566 (Los Fresnos, TX) is $64,385 per year. The cost of living index is 60 (100 = national average).
What is the average home price in zip code 78566?
The median home value in zip code 78566 (Los Fresnos, TX) is $138,100. The cost of living index is 60 compared to the national average of 100.
What county is zip code 78566 in?
Zip code 78566 is located in Cameron County, Texas. The primary city is Los Fresnos.
What is the area code for zip code 78566?
Zip code 78566 in Los Fresnos, TX uses area code 979. It is located in the Central (CST/CDT) timezone.
Is zip code 78566 a good place to live?
Zip code 78566 (Los Fresnos, TX) has a cost of living index of 60 (100 = national average), a median household income of $64,385, and median home values of $138,100. The median age is 34.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78566?
The cost of living index for zip code 78566 (Los Fresnos, TX) is 60, where 100 represents the national average. This area is below the national average. Median home value: $138,100.
What schools serve zip code 78566?
Zip code 78566 in Los Fresnos, Texas is served by the local school district of Cameron County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.