Brazoria County area

Population and density of Brazoria County

The Census Bureau estimates that 419,080 people lived in Brazoria County on July 1, 2025. That ranks #183 of 3,222 county equivalents nationally and #14 of 254 in Texas. Since the April 1, 2020 estimates base of 372,046, the population has grown by 47,034 (+12.6%), compared with +8.8% for Texas as a whole.

With 1,363.3 square miles of land, that is 307 people per square mile (119 per km²), placing Brazoria County #500 nationally for density and #23 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 2.1 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Brazoria County

24 incorporated places lie at least partly in Brazoria County. Together they are home to 283,194 people (67.6%); the other 135,886 (32.4%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Pearland city, with 115,821 residents in the county (the city extends into 2 other counties). The county seat, Angleton city, has 21,295 residents. Among places with at least 1,000 residents in 2020, Iowa Colony village grew fastest since then (+152.8%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Brazoria County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Brazoria County is a central county of the Houston-Pasadena-The Woodlands, TX Metropolitan Statistical Area. Its 10 county equivalents have 7,904,627 residents on 8,839.2 square miles of land; Brazoria County accounts for 15.4% of the land and 5.3% of the residents. By combined land it ranks #9 of 393 metropolitan areas, and #5 by population. It belongs to the Houston-Pasadena, TX Combined Statistical Area.

ZIP codes

21 ZIP Code Tabulation Areas have land in Brazoria County; 16 of them have most of their land inside the county, and the others mainly cover neighboring areas.

774227743077431774447748077486775107751177515775177753177534775417754577546775667757777578775817758377584

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Brazoria County

Brazoria County shares a land border with 5 county equivalents. It has more land than 4 of them. The largest neighbor is Harris County (1,707.3 mi²) and the smallest is Galveston County (379.4 mi²). Together with its neighbors, Brazoria County forms a block of 6,491.5 mi² of land, of which it holds 21%.

How big is Brazoria County compared with U.S. states?

Brazoria County has more land than 1 of the 50 states. It is about 1.3 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.4 times as much land (1,948.6 mi²). Texas’s county land could hold about 192 areas the size of Brazoria County.

Another way to picture it: the same land area would fill a square about 36.9 miles (59.4 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Brazoria County?

Brazoria County has more land than 2,782 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Brazoria County at #418 nationally by total area, 22 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 15.3%, compared with a national county-equivalent median of 1.2% — 14.1 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Brazoria County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.