FloodMaps
Map of FEMA flood zones in 77581Tap the map to explore

ZIP code · Flood risk

Check any address in 77581

Quick facts

In FEMA's 100-year zone

11%

1,737 of 15,762 single-family homes

Ground height

36 to 54 ft

Above sea level, for most homes in the ZIP

FEMA aid after Harvey

3,677 requests

1,594 grants, median $2,234

Nearest creek or channel

0.1 mi

Typical distance from a home

77581 and Brazoria County

ZIP 77581's figures beside Brazoria County's
77581Brazoria County
Single-family homes15,762111,057
In the 100-year zone11%19%

Frequently asked questions

Is 77581 in a flood zone?

1,737 of the 15,762 single-family homes in 77581 sit in FEMA's 100-year zone, or 11%. That is below the Brazoria County share of 19%.

Will the new flood map change 77581?

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 77581 flood in Hurricane Harvey?

FEMA took 3,677 aid requests from the ZIP after the storm and made 1,594 grants, with a median of $2,234. A FloodMaps report shows a single address's Harvey record.

How do I check a home in 77581?

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.

77581 has 15,762 single-family homes on the county appraisal roll. Most sit between 36 and 54 ft above sea level, and the typical home is 0.1 mi from the nearest creek or drainage channel. 1,737 of them (11%) 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, 77511 has 28% of its single-family homes in the zone and 77075 has 5%. After Hurricane Harvey, FEMA took 3,677 aid requests from the ZIP and made 1,594 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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