ZIP code · Galveston · Texas · United States

ZIP code 77550 — Galveston

ZIP code 77550 serves Galveston, Texas.

Postal code
77550
Single source Value from one source, not cross-checked.
City
Galveston
County
Galveston FIPS 48167
State
Texas
Country
United States
Coordinates
29.2983, -94.7930 — precision precise (locality)
View on OpenStreetMap
Population
23,542 (ZCTA, ACS 5-year)
Population density
3,114 / sq mi
Land area
7.6 sq mi (19.6 km²) (ZCTA, ACS 5-year)
Median household income
$46,262
Per-capita income
$35,160
Median age
39.1
Households
11,604
Housing units
15,811
Median home value
$283,800
Median gross rent
$1,182 / 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 91°F), coldest Jan (avg low 48°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F636570768388909189817265
Avg low °F485158637277807976685850

NOAA 1991–2020 climate normals from the nearest station: GALVESTON (0.4 mi) · NOAA NCEI

Places in ZIP 77550

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