Overview
          3,758
                  Total Population
                34.7
                  Median age
                47.79%
                  Female population %
                109.2:100
                  Gender ratio (M:F)
                40-44 years
                  Largest age group
                55.7
                  Total dependency ratio
                White
                  Largest racial group
                86
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Fort Branch's population is young compared to the rest of the country:
- The median age in Fort Branch is 34.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - Fort Branch's population under 18 was 26.21%, compared to the 22.51% nationwide.
 - Fort Branch's elderly or the senior population (over 65 age) was 13.44% as compared to 16.04% nationwide.
 - Of the total population in Fort Branch, 22.35% were under the age of 15, 20.20% aged 15 to 29, 44.01% aged 30 to 64, 12.21% aged 65 to 84, and 1.22% were 85 years of age and older.
 
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Gender
There are 166 less females than males in Fort Branch:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 47.79% females and 52.21% males in Fort Branch, IN.
 - The Fort Branch, IN gender ratio is 109.2:100 i.e. 109.2 men to 100 women (1.092).
 - For male population, the largest age group is 55-59 years with a population of 236.
 - For the female population, the largest age group is 40-44 years with a population of 274.
 
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Race / Ethnicity
Fort Branch's population has become increasingly diverse:
- Racial distribution of Fort Branch population: 95.64% are White, 0.88% are Black or African American, 0.03% are American Indian and Alaska Native, 0.05% are Asian, 0.72% are some other race and 2.69% are multiracial.
 - Fort Branch's racial breakdown clearly shows that there is an absolute majority of White population in the town.
 - By ethnicity, 86 is Hispanic or Latino (of any race), and 3,672 (97.71% of the total population) is Non-Hispanic.
 - The largest racial group in Fort Branch is White with a population of 3,594 (95.64% of the total population).
 
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Year by year
Fort Branch's population has already reached its peak and is showing a trend of decline:
- The peak population was 2,965 in the year 2020
 - From 2000 to 2010, Fort Branch's population increased by 54 (1.98%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, Fort Branch's population increased by 181 (6.50%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
 - Between the year 2000 and 2022, Fort Branch's population was lowest in year 2009 at 2,652.
 
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References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
 - U.S. Census Bureau Population Estimates Population Estimates Program (PEP)