Brazoria County, Texas Age & Gender Statistics (2024)

Total Population

391,255

Median Age

36.7

Male Median

36.2

Female Median

37.1

Brazoria County, Texas Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Brazoria County, Texas Demographic Trend

Since 2010, the population of has changed by +30.2%%.

+30.2%% Growth

Brazoria County, Texas Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Brazoria County, Texas Historical Population Data

YearMedian AgePopulation
202436.7391,255
202336.5381,650
202236.3374,600
202136.1368,575
202036.0368,062
201935.8360,677
201835.6353,999
201735.6345,995
201635.5338,419
201535.5331,741
201435.4325,477
201335.3319,493
201235.2313,813
201135.0307,695
201034.9300,522

Brazoria County, Texas Age Group Breakdown (2024)

Age CohortPercentage
Under 56.3%
5–1719.3%
18–248.3%
25–3413.4%
35–5428.6%
55–6411.3%
65+12.8%

Dependency Ratios for Brazoria County, Texas

Total Dependency Ratio:
62.4
Youth Dependency:
41.5
Old-Age Dependency:
20.8

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Brazoria County, Texas

The median age in Brazoria County, Texas is 36.7 years.

According to latest Census data, the total population of Brazoria County, Texas is 391,255.

In Brazoria County, Texas, seniors (ages 65+) make up 12.8% of the population, while children under 18 represent 19.3%.

Based on historical data since 2010, the population in Brazoria County, Texas is aging.
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