Zip Code 78589
San Juan, Texas — Hidalgo County
📍 ZIP code 78589 is in San Juan, Hidalgo County, Texas.
ZIP code 78589 is located in San Juan, Hidalgo County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 39,958. The area code for ZIP code 78589 is 979.
Quick Answer
Zip code 78589 is in San Juan, Texas (Hidalgo County). It has a population of 39,958, median household income of $51,662, and median home value of $112,400.
Population
39,958
Income
$51,662
Home Value
$112,400
Climate
98°F / 49°F
About Zip Code 78589
Zip code 78589 is located in San Juan, Texas, within Hidalgo County. Home to approximately 39,958 residents, this area sits at an elevation of 109 ft and falls within the Central (CST/CDT) timezone. The local area code is 979.
The median household income is $51,662 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $112,400, and the cost of living index is 60 (40% below the national average of 100).
Summers average a high of 98°F while winters drop to 49°F. The area receives about 19 in of rain annually. The zip code covers 20.8 square miles of land area.
Key Statistics
39,958
$51,662
$112,400
Central (CST/CDT)
979
109 ft
20.8 sq mi
29.9
12,393
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Compare With Nearby Zip Codes
| Metric | 78589 | 78577 | 78516 | 78503 | 78537 | 78501 |
|---|---|---|---|---|---|---|
| City | San Juan, TX | Mcallen, TX | Alamo, TX | Mcallen, TX | Donna, TX | Mcallen, TX |
| Population | 39,958 | 79,903 | 34,960 | 22,566 | 51,346 | 59,095 |
| Median Income | $51,662 | $49,768 | $51,547 | $48,765 | $36,331 | $49,451 |
| Home Value | $112,400 | $111,500 | $102,900 | $130,100 | $74,700 | $149,000 |
| Cost of Living | 60 | 60 | 60 | 60 | 60 | 60 |
| Median Age | 29.9 | 29.5 | 30.3 | 32.1 | 25.8 | 36.8 |
Cost of Living
100 = National Average. San Juan's cost of living is 40% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.2x
Demographics
Zip code 78589 has a population of 39,958 people with a median age of 29.9. There are 12,393 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
San Juan (78589) population trend from 2010 to 2024
↓ -0.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
98°F
49°F
19 in
0 in
San Juan experiences hot summers with average highs around 98°F. Winters are mild with lows averaging 49°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$112,400
Median Household Income
$51,662
With 12,393 housing units across 20.8 square miles, 78589 has a housing density of 596 units per square mile. The home price-to-income ratio is 2.2x.
Location & Geography
Latitude
26.1678°
Longitude
-98.1548°
Land Area
20.8 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 78589 (San Juan, TX) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 78589's $51,662. A way to compare San Juan 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 78589 (San Juan, 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 San Juan, Texas?
San Juan, Texas uses zip code 78589.
What county is zip code 78589 in?
Zip code 78589 is located in Hidalgo County, Texas.
What is the population of zip code 78589?
The population of zip code 78589 is 39,958 with a median age of 29.9.
Is 78589 in San Juan, Texas?
Yes, zip code 78589 is in San Juan, Hidalgo County, Texas. The area code is 979.
Frequently Asked Questions
What city is zip code 78589 in?
Zip code 78589 is in San Juan, Texas. It is part of Hidalgo County and uses the Central (CST/CDT) timezone.
What is zip code 78589?
Zip code 78589 is a U.S. postal code in San Juan, Texas (Hidalgo County). It has a population of 39,958 and covers 20.8 square miles.
What is the population of zip code 78589?
The population of zip code 78589 (San Juan, TX) is 39,958 with a median age of 29.9. There are approximately 12,393 housing units in this area.
What is the median income in zip code 78589?
The median household income in zip code 78589 (San Juan, TX) is $51,662 per year. The cost of living index is 60 (100 = national average).
What is the average home price in zip code 78589?
The median home value in zip code 78589 (San Juan, TX) is $112,400. The cost of living index is 60 compared to the national average of 100.
What county is zip code 78589 in?
Zip code 78589 is located in Hidalgo County, Texas. The primary city is San Juan.
What is the area code for zip code 78589?
Zip code 78589 in San Juan, TX uses area code 979. It is located in the Central (CST/CDT) timezone.
Is zip code 78589 a good place to live?
Zip code 78589 (San Juan, TX) has a cost of living index of 60 (100 = national average), a median household income of $51,662, and median home values of $112,400. The median age is 29.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78589?
The cost of living index for zip code 78589 (San Juan, TX) is 60, where 100 represents the national average. This area is below the national average. Median home value: $112,400.
What schools serve zip code 78589?
Zip code 78589 in San Juan, Texas is served by the local school district of Hidalgo 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.