🇺🇸 United States ZIP Code

STANDARD

78751

Austin

ZIP Code 78751 is a standard zip code serving Austin, Austin, Texas (TX), in Travis County, United States. It has an estimated population of 14,385 with a median household income of $39,032. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 30.309300
Longitude: -97.724200

Geographic Details

Land Area: 2.40 mi²
Population Density: 6001.0 people per mi² (95th percentile)
Bounding Box: 30.326580°N, 30.294284°S, -97.706930°E, -97.737643°W

With 14,385 residents spread across 2.40 square miles, this area has a population density of 6001.0 people per square mile.

Demographics

14,385

Population

75th percentile

$39,032

Median Income

25th percentile

$297,200

Median Home Value

85th percentile

2.40 mi²

Land Area

The median household income in 78751 is $39,032, and the median home value is $297,200. This is below the national average for household income.

Housing

8,375

Total Units

7,740

Occupied Units

92.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Austin, TX.

73301

Austin

73344

Austin

78701

Austin

78702

Austin

78703

Austin

78704

Austin

78705

Austin

78708

Austin

78709

Austin

78710

Austin

Similar ZIP Codes in Texas

ZIP codes with similar median household income in Texas.

78046

Laredo

$34,399

75457

Mount Vernon

$39,909

75949

Huntington

$38,165

75169

Wills Point

$43,316

77465

Palacios

$42,623

79830

Alpine

$42,062

77868

Navasota

$41,000

76114

Fort Worth

$37,752

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.