Zip Code 78582
Rio Grande City, Texas — Starr County
📍 ZIP code 78582 is in Rio Grande City, Starr County, Texas.
ZIP code 78582 is located in Rio Grande City, Starr County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 44,883. The area code for ZIP code 78582 is 979.
Quick Answer
Zip code 78582 is in Rio Grande City, Texas (Starr County). It has a population of 44,883, median household income of $41,452, and median home value of $102,000.
Population
44,883
Income
$41,452
Home Value
$102,000
Climate
99°F / 45°F
About Zip Code 78582
Zip code 78582 is located in Rio Grande City, Texas, within Starr County. Home to approximately 44,883 residents, this area sits at an elevation of 470 ft and falls within the Central (CST/CDT) timezone. The local area code is 979.
The median household income is $41,452 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $102,000, and the cost of living index is 60 (40% below the national average of 100).
Summers average a high of 99°F while winters drop to 45°F. The area receives about 22 in of rain annually. The zip code covers 651.1 square miles of land area and 1.8 square miles of water.
Key Statistics
44,883
$41,452
$102,000
Central (CST/CDT)
979
470 ft
651.1 sq mi
28.6
14,743
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Compare With Nearby Zip Codes
| Metric | 78582 | 78584 | 78548 | 78595 | 78576 | 78565 |
|---|---|---|---|---|---|---|
| City | Rio Grande City, TX | Roma, TX | Grulla, TX | Mission, TX | Mission, TX | Los Ebanos, TX |
| Population | 44,883 | 17,823 | 1,456 | 5,958 | 13,902 | 63 |
| Median Income | $41,452 | $30,134 | $37,212 | $48,304 | $48,205 | $0 |
| Home Value | $102,000 | $83,800 | $52,300 | $86,400 | $116,600 | $0 |
| Cost of Living | 60 | 60 | 60 | 60 | 60 | 100 |
| Median Age | 28.6 | 29.8 | 31.5 | 33.3 | 20.8 | 74.4 |
Cost of Living
100 = National Average. Rio Grande City's cost of living is 40% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.5x
Demographics
Zip code 78582 has a population of 44,883 people with a median age of 28.6. There are 14,743 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Rio Grande City (78582) population trend from 2010 to 2024
↑ 9807.9%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
99°F
45°F
22 in
0 in
Rio Grande City experiences hot summers with average highs around 99°F. Winters are mild with lows averaging 45°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$102,000
Median Household Income
$41,452
With 14,743 housing units across 651.1 square miles, 78582 has a housing density of 23 units per square mile. The home price-to-income ratio is 2.5x.
Location & Geography
Latitude
26.5309°
Longitude
-98.7402°
Land Area
651.1 sq mi
Water Area
1.8 sq mi
Nearby Zip Codes
Zip codes closest to 78582 (Rio Grande City, 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 78582's $41,452. A way to compare Rio Grande City 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 78582 (Rio Grande City, 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 Rio Grande City, Texas?
Rio Grande City, Texas uses zip code 78582.
What county is zip code 78582 in?
Zip code 78582 is located in Starr County, Texas.
What is the population of zip code 78582?
The population of zip code 78582 is 44,883 with a median age of 28.6.
Is 78582 in Rio Grande City, Texas?
Yes, zip code 78582 is in Rio Grande City, Starr County, Texas. The area code is 979.
Frequently Asked Questions
What city is zip code 78582 in?
Zip code 78582 is in Rio Grande City, Texas. It is part of Starr County and uses the Central (CST/CDT) timezone.
What is zip code 78582?
Zip code 78582 is a U.S. postal code in Rio Grande City, Texas (Starr County). It has a population of 44,883 and covers 651.1 square miles.
What is the population of zip code 78582?
The population of zip code 78582 (Rio Grande City, TX) is 44,883 with a median age of 28.6. There are approximately 14,743 housing units in this area.
What is the median income in zip code 78582?
The median household income in zip code 78582 (Rio Grande City, TX) is $41,452 per year. The cost of living index is 60 (100 = national average).
What is the average home price in zip code 78582?
The median home value in zip code 78582 (Rio Grande City, TX) is $102,000. The cost of living index is 60 compared to the national average of 100.
What county is zip code 78582 in?
Zip code 78582 is located in Starr County, Texas. The primary city is Rio Grande City.
What is the area code for zip code 78582?
Zip code 78582 in Rio Grande City, TX uses area code 979. It is located in the Central (CST/CDT) timezone.
Is zip code 78582 a good place to live?
Zip code 78582 (Rio Grande City, TX) has a cost of living index of 60 (100 = national average), a median household income of $41,452, and median home values of $102,000. The median age is 28.6. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78582?
The cost of living index for zip code 78582 (Rio Grande City, TX) is 60, where 100 represents the national average. This area is below the national average. Median home value: $102,000.
What schools serve zip code 78582?
Zip code 78582 in Rio Grande City, Texas is served by the local school district of Starr 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.