Brazoria County, Texas Age & Gender Distribution (2024)
Population distribution by age and gender for Brazoria County, Texas
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

Brazoria County, Texas Demographic Trend
Since 2010, the population of has changed by +30.2%%.
+30.2%% Growth
Brazoria County, Texas Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Brazoria County, Texas Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 36.7 | 391,255 |
| 2023 | 36.5 | 381,650 |
| 2022 | 36.3 | 374,600 |
| 2021 | 36.1 | 368,575 |
| 2020 | 36.0 | 368,062 |
| 2019 | 35.8 | 360,677 |
| 2018 | 35.6 | 353,999 |
| 2017 | 35.6 | 345,995 |
| 2016 | 35.5 | 338,419 |
| 2015 | 35.5 | 331,741 |
| 2014 | 35.4 | 325,477 |
| 2013 | 35.3 | 319,493 |
| 2012 | 35.2 | 313,813 |
| 2011 | 35.0 | 307,695 |
| 2010 | 34.9 | 300,522 |
Brazoria County, Texas Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.3% |
| 5–17 | 19.3% |
| 18–24 | 8.3% |
| 25–34 | 13.4% |
| 35–54 | 28.6% |
| 55–64 | 11.3% |
| 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.