Communities: Know the Risk

Brazoria County

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Brazoria County was founded in 1836. Brazoria County, like nearby Brazos County, takes its name from the Brazos River, which flows through its center.

As of 2010, the population of Brazoria County is 313,166.

Brazoria County receives annual rainfall averages of 52 inches. Several historic storms affected this area. The great Hurricane of September 1900 scoured clean the coastline of Brazoria County. Tropical Storm Claudette, in July 1979, brought 45 inches of rain to an area near Alvin. Claudette produced the U.S.’s 24 hour rainfall record of 43 inches. Hurricane Alicia in August 1983 and Hurricane Ike in September 2008 also affected Brazoria County. Brazoria County also received significant rainfall from Hurricane Alex in June 2010.

Brazoria County resembles both rural and suburban life as part of the Greater Houston area.

Brazoria County entered the regular National Flood Insurance Program (NFIP) in May 1971.

As of June 2010, the City of Pearland participates in the Community Rating System (CRS) and enjoys a 10 percent discount on flood insurance premiums.

For more helpful information, look under Resources and Related Links.

For mapping questions, contact the FEMA Mapping Information eXchange (FMIX) – 1-877-336-2627.

We are currently updating the Flood Insurance Rate Maps (FIRMs) for coastal Texas. Please visit

Coastal Barrier Resources Systems are identified by the U.S. Fish and Wildlife Service (USFWS) and can be viewed here.