FloodMaps
Map of FEMA flood zones in 77573Tap the map to explore

ZIP code · Flood risk

Check any address in 77573

Quick facts

In FEMA's 100-year zone

10%

2,959 of 29,134 single-family homes

Ground height

14 to 28 ft

Above sea level, for most homes in the ZIP

FEMA aid after Harvey

6,352 requests

2,688 grants, median $2,202

Nearest creek or channel

0.2 mi

Typical distance from a home

77573 and Galveston County

ZIP 77573's figures beside Galveston County's
77573Galveston County
Single-family homes29,134117,997
In the 100-year zone10%33%
Typical ground height21 ft16 ft
Typical distance to a creek0.2 mi0.2 mi

Frequently asked questions

Is 77573 in a flood zone?

2,959 of the 29,134 single-family homes in 77573 sit in FEMA's 100-year zone, or 10%. That is less than half the Galveston County share of 33%.

Will the new flood map change 77573?

Galveston County has no draft map we track, so the zones on this page are FEMA's current map, which sets flood insurance requirements.

Did 77573 flood in Hurricane Harvey?

FEMA took 6,352 aid requests from the ZIP after the storm and made 2,688 grants, with a median of $2,202. A FloodMaps report shows a single address's Harvey record.

How do I check a home in 77573?

Search the address above for a free check of its FEMA flood zone and its ground height. For the full picture, including Harvey records, flood depth modeling, and an AI summary written from the home's own data, upgrade to a Premium Report starting at $7.

77573 has 29,134 single-family homes on the county appraisal roll. Most sit between 14 and 28 ft above sea level, and the typical home is 0.2 mi from the nearest creek or drainage channel. 2,959 of them (10%) are in FEMA's 100-year zone today. Galveston County has no draft map we track, so FEMA's current map sets flood insurance requirements here.

Next door, 77565 has 67% of its single-family homes in the zone and 77518 has 3%. After Hurricane Harvey, FEMA took 6,352 aid requests from the ZIP and made 2,688 grants.

Compiled by FloodMaps from FEMA and county records. Flood-zone counts are single-family homes on the county appraisal rolls, placed on FEMA's flood map as it stood on October 13, 2026. FEMA aid is Individual Assistance requests and grants after Harvey, by ZIP.

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