🇺🇸 United States ZIP Code

STANDARD

77551

Galveston

ZIP Code 77551 is a standard zip code serving Galveston, Galveston, Texas (TX), in Galveston County, United States. It has an estimated population of 17,753 with a median household income of $42,575. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 29.276600
Longitude: -94.830300

Geographic Details

Land Area: 3.81 mi²
Water Area: 0.91 mi²
Population Density: 4655.0 people per mi² (90th percentile)
Bounding Box: 29.297767°N, 29.254841°S, -94.809718°E, -94.858819°W

With 17,753 residents spread across 3.81 square miles, this area has a population density of 4655.0 people per square mile.

Demographics

17,753

Population

75th percentile

$42,575

Median Income

35th percentile

$125,900

Median Home Value

50th percentile

3.81 mi²

Land Area

The median household income in 77551 is $42,575, and the median home value is $125,900.

Housing

10,330

Total Units

7,007

Occupied Units

67.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Galveston, TX.

77550

Galveston

77552

Galveston

77553

Galveston

77554

Galveston

77555

Galveston

Similar ZIP Codes in Texas

ZIP codes with similar median household income in Texas.

75211

Dallas

$36,704

76933

Bronte

$43,295

75497

Yantis

$48,722

75240

Dallas

$37,095

79322

Crosbyton

$39,420

77541

Freeport

$39,304

79325

Farwell

$44,559

76437

Cisco

$41,000

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.