Geography of Brazoria County
Brazoria County has grown into a suburban county, with about 419,080 people living across 1,387 square miles. Subdivisions, commuter corridors and remaining farmland sit side by side here.
It lies in the Gulf Coast region at about 29.19° N, 95.45° W and is 27th in size among Texas's 254 counties. The county fronts the Gulf of Mexico or its bays, so the coastline, wetlands and storm-surge planning are part of everyday life. Brazoria County shares boundaries with 5 other Texas counties, and the closest major cities are Houston (about 40 miles away in a straight line) and Victoria (about 97 miles).
The Gulf Coast region is low, flat and closely tied to the water — bays, barrier islands, rice fields and coastal prairie, along with ports, refineries and petrochemical plants that are central to the Texas economy. Hurricanes and flooding are real planning concerns here.
For a broader view of how Brazoria County fits within the state, download our free Texas map with counties and cities PDF — a printable, high-resolution reference showing all 254 Texas counties labeled with their county seats.
Population & demographics
With approximately 419,080 residents across 1,387 square miles, Brazoria County has a population density of about 302.1 people per square mile. Density here reflects a mix of small cities, suburbs, and rural land.
County seat: Angleton
County government for Brazoria County is based in Angleton. The commissioners court, made up of a county judge and four precinct commissioners, meets here and sets the county budget, roads policy and tax rate. As the county has grown, some offices have added annex locations closer to newer suburbs.
History & name origin
Brazoria County was established in 1836 and was named for Brazoria, Texas, an early port on the Brazos River. It was carved from territory previously part of One of the original 23 counties.
Brazoria County, Texas — frequently asked questions
Quick answers about Brazoria County geography, population, county seat, neighboring counties, and how to use the maps on this page. Figures are sourced from the U.S. Census Bureau; answers are written and reviewed by the Texas County Map team.
Where is Brazoria County, Texas located?+
Brazoria County is located in the Gulf Coast region of Texas at approximately 29.189° N, 95.451° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48039. The interactive map on this page renders the official U.S. Census TIGER boundary for Brazoria County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Brazoria County in square miles?+
Brazoria County covers approximately 1,387 square miles of land in the Gulf Coast region — a mid-sized Texas county. By land area it ranks 27th out of 254 Texas counties. The full bounding box of the county is rendered to scale on the interactive map and matches the U.S. Census TIGER 2023 polygon.
What is the population of Brazoria County, Texas?+
Brazoria County has a population of approximately 419,080 residents. With 1,387 square miles of land, that works out to a population density of about 302.1 people per square mile, which is densely populated for a Texas county. That makes Brazoria County the 14th most populous of the 254 counties in Texas.
What is the county seat of Brazoria County?+
Angleton is the county seat of Brazoria County, Texas, which was organized in 1836 and named for Brazoria, Texas, an early port on the Brazos River. Brazoria County was originally carved out of One of the original 23 counties. County government offices, courthouses, and most public records for Brazoria County are located in Angleton.
Which Texas counties border Brazoria County?+
Brazoria County shares borders with Harris, Matagorda, Wharton, Fort Bend, and Galveston counties. These 5 neighboring counties are highlighted on the schematic boundary map and linked at the bottom of this page so you can quickly compare population, area, and county seats across the Gulf Coast region.
Where can I download or print a map of Brazoria County?+
Use the "Download PDF" button below the Brazoria County map on this page to save a letter-size PDF of the county boundary, neighboring counties and incorporated places, drawn from U.S. Census Bureau 2023 boundary files. The "Official TxDOT road map" button downloads the Texas Department of Transportation county road mapbook for Brazoria County. Both files are stored on this site and download directly. Our free Texas map with counties and cities PDF shows all 254 counties on one sheet.
What is the FIPS code for Brazoria County, Texas?+
The full 5-digit U.S. Census FIPS code for Brazoria County is 48039, made up of Texas state code 48 and the 3-digit county code 039. This is the same FIPS code used by the U.S. Census Bureau TIGER/Line files, the American Community Survey, and most federal datasets that key on county.