Geography of Brazoria County
Brazoria County sits at roughly 29.19° N and 95.45° W in the Gulf Coast region of Texas, spanning 1,387 square miles of terrain that includes the landscape characteristic of the area — from open ranchland and farmland to small-town main streets. The county's centroid is near Angleton, and the county shares boundaries with 5 neighboring counties.
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
Angleton serves as the seat of government for Brazoria County. The county courthouse, commissioners court, district clerk, and primary public records are located here. As with all 254 Texas counties, the county seat is the anchor of civic life and the principal address for elections, permits, and court filings.
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. Every answer is generated from the official U.S. Census data backing this site.
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?+
A free, print-ready PDF map of Brazoria County is available from the "Download PDF" button at the top of this page. The printable layout uses authentic U.S. Census TIGER boundary geometry for Brazoria County, includes a Texas locator inset, and is sized for standard 8.5" × 11" Letter paper. For interactive use, the live Leaflet map on this page supports OpenStreetMap, Esri satellite, Esri topographic, and Carto light basemaps with zoom, scale bar, and fullscreen.
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.