ZIP code · Galveston · Texas · United States

ZIP code 77551 — Galveston

ZIP code 77551 serves Galveston, Texas.

Postal code
77551
Single source Value from one source, not cross-checked.
City
Galveston
County
Galveston FIPS 48167
State
Texas
Country
United States
Coordinates
29.2766, -94.8303 — precision precise (locality)
View on OpenStreetMap
Population
22,031 (ZCTA, ACS 5-year)
Population density
5,572 / sq mi
Land area
4 sq mi (10.2 km²) (ZCTA, ACS 5-year)
Median household income
$59,792
Per-capita income
$36,520
Median age
37.2
Households
9,228
Housing units
11,184
Median home value
$278,100
Median gross rent
$1,342 / month
Congressional district
TX-14 (119th Congress)
USDA hardiness zone
10a (30 to 35 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
409
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Aug (avg high 92°F), coldest Jan (avg low 49°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F636672788490919289827266
Avg low °F495258657278808076695952
Precip in4.32.13.02.13.04.23.44.76.75.24.34.2

NOAA 1991–2020 climate normals from the nearest station: GALVESTON SCHOLES FLD (1.7 mi) · NOAA NCEI

Places in ZIP 77551

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page