🇺🇸 United States ZIP Code

STANDARD

78589

San Juan

ZIP Code 78589 is a standard zip code serving San Juan, San Juan, Texas (TX), in Hidalgo County, United States. It has an estimated population of 38,004 with a median household income of $33,648. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Texas (TX)
County: Hidalgo
City: San Juan
Timezone: America/Chicago

Coordinates

Latitude: 26.204400
Longitude: -98.153700

Geographic Details

Land Area: 20.79 mi²
Population Density: 1828.0 people per mi² (80th percentile)
Bounding Box: 26.246868°N, 26.081307°S, -98.125689°E, -98.182088°W

With 38,004 residents spread across 20.79 square miles, this area has a population density of 1828.0 people per square mile.

Demographics

38,004

Population

90th percentile

$33,648

Median Income

15th percentile

$80,800

Median Home Value

20th percentile

20.79 mi²

Land Area

The median household income in 78589 is $33,648, and the median home value is $80,800. This is below the national average for household income.

Housing

10,747

Total Units

9,836

Occupied Units

91.5%

Occupancy Rate

Similar ZIP Codes in Texas

ZIP codes with similar median household income in Texas.

78583

Rio Hondo

$34,324

77093

Houston

$31,725

77371

Shepherd

$38,595

75661

Karnack

$37,357

79529

Knox City

$36,979

77442

Garwood

$35,208

77003

Houston

$36,412

79836

Clint

$36,394

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.