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US ZIP Code Profile

ZIP Code 77551
Galveston, Texas

ZIP code 77551 is in Galveston, located in Galveston County, Texas, within the Houston-The Woodlands-Sugar Land metro area. Its 2020 Census population was 22,677. The estimated median adjusted gross income per tax return is $38,518, and about 5% of filers report $200,000 or more.

2020 Population
22,677
Census ZCTA
County
Galveston
FIPS 48167
Median income (est.)
$38,518
IRS SOI 2022
Land Area
3.81 mi²
+ 0.916 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityGalveston, TX
CountyGalveston County (FIPS 48167)
StateTexas (FIPS 48)
Metro Area (MSA)Houston-The Woodlands-Sugar Land, TX Metro Area (26420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.278189, -94.83329
Land / Water Area3.81 mi² land · 0.916 mi² water

02Income & Economics

Distribution of the 8,810 individual tax returns filed in 77551 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
36.4%
$25K–$50K
25.1%
$50K–$75K
14.5%
$75K–$100K
7.4%
$100K–$200K
11.8%
$200K+
4.8%
The $200,000+ bracket accounts for 33% of 77551's total adjusted gross income, from 5% of returns — a concentration that drives the gap between the median ($38,518) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 77551's IRS income metrics, 2020–2022.

Median income (2021→2022)
$38,518
▲ 7.2%
Filers earning $200K+
4.8%
▲ 0.3 pt
Total filers
8,810
▼ 0.9%
GET /zipc/v2/zipcodes/77551/soi?year=… $34K 2020 $36K 2021 $39K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 77551 ZCTA.

2000
20,997
 
2010
17,753
▼ -15.4%
2020
22,677
▲ +27.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number483380
City AliasesGalveston

06Frequently Asked Questions

What county is ZIP code 77551 in?

ZIP code 77551 is in Galveston County, Texas (county FIPS code 48167).

What city is ZIP code 77551?

The primary USPS city for 77551 is Galveston, TX.

What metro area (MSA) is 77551 in?

77551 is part of the Houston-The Woodlands-Sugar Land, TX Metro Area (MSA code 26420).

What is the population of ZIP code 77551?

The 2020 Census population of 77551 was 22,677 residents.

What is the median income in ZIP code 77551?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 77551 is about $38,518, with around 5% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.