What to know about ZIP 77555
ZIP code 77555 covers Galveston, TX in Galveston County with a population of about 2.
It sits in telephone area code 409; U.S. House district TX-14; the HOUSTON media market.
Galveston city, TX
ZIP Code 77555 — Galveston city, TX Demographics & Data
Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
Map, Quick Facts & Location
Quick Facts
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Population
2
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Median Age
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At a glance
Overview of ZIP Code 77555
RetirementRetirement-oriented community
Local search focus: Retirement
Galveston, TX fits a retirement-oriented profile (high share of residents 65+ (50.0%)). Residents and relocators commonly research healthcare access, everyday amenities (dining, personal services), and housing costs rather than tech or campus life.
Climate risk and migration signals
FEMA’s National Risk Index rates natural-hazard risk for Galveston city, TX as Relatively High (composite score 95.4), which is among the highest nationally. The strongest component scores on US5 are hurricane (97.0) and flood (93.6). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.
Climate normals for Galveston city, TX show limited published climate normals on US5.
IRS migration statistics for ZIP 77555 (Galveston city, TX) are roughly balanced (near-zero net) on US5’s published series.