🇺🇸 United States ZIP Code

PO BOX

78594

Sebastian

ZIP Code 78594 is a po box zip code serving Sebastian, Sebastian, Texas (TX), in Willacy County, United States. It has an estimated population of 1,990 with a median household income of $14,565. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Texas (TX)
County: Willacy
City: Sebastian
Timezone: America/Chicago

Coordinates

Latitude: 26.344000
Longitude: -97.812300

Geographic Details

Land Area: 1.85 mi²
Water Area: 0.02 mi²
Population Density: 1074.0 people per mi² (75th percentile)
Bounding Box: 26.357276°N, 26.335937°S, -97.780359°E, -97.820190°W

With 1,990 residents spread across 1.85 square miles, this area has a population density of 1074.0 people per square mile.

Demographics

1,990

Population

40th percentile

$14,565

Median Income

$35,300

Median Home Value

1.85 mi²

Land Area

The median household income in 78594 is $14,565, and the median home value is $35,300.

Housing

707

Total Units

620

Occupied Units

87.7%

Occupancy Rate

Similar ZIP Codes in Texas

ZIP codes with similar median household income in Texas.

75210

Dallas

$15,258

79905

El Paso

$19,455

78705

Austin

$12,143

79401

Lubbock

$13,450

76704

Waco

$17,166

77369

Rye

$19,485

77840

College Station

$19,011

79901

El Paso

$13,524

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.