FloodMaps
Map of FEMA flood zones in 77531Tap the map to explore

ZIP code · Flood risk

Check any address in 77531

Quick facts

In FEMA's 100-year zone

24%

925 of 3,857 single-family homes

Ground height

9 to 16 ft

Above sea level, for most homes in the ZIP

FEMA aid after Harvey

2,453 requests

1,234 grants, median $500

Nearest creek or channel

0.1 mi

Typical distance from a home

77531 and Brazoria County

ZIP 77531's figures beside Brazoria County's
77531Brazoria County
Single-family homes3,857111,057
In the 100-year zone24%19%

Frequently asked questions

Is 77531 in a flood zone?

925 of the 3,857 single-family homes in 77531 sit in FEMA's 100-year zone, or 24%. That is above the Brazoria County share of 19%.

Will the new flood map change 77531?

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

Did 77531 flood in Hurricane Harvey?

FEMA took 2,453 aid requests from the ZIP after the storm and made 1,234 grants, with a median of $500. A FloodMaps report shows a single address's Harvey record.

How do I check a home in 77531?

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.

77531 has 3,857 single-family homes on the county appraisal roll. Most sit between 9 and 16 ft above sea level, and the typical home is 0.1 mi from the nearest creek or drainage channel. 925 of them (24%) are in FEMA's 100-year zone today. Brazoria County has no draft map we track, so FEMA's current map sets flood insurance requirements here.

Next door, 77541 has 50% of its single-family homes in the zone and 77566 has 13%. After Hurricane Harvey, FEMA took 2,453 aid requests from the ZIP and made 1,234 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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