Overview
          708
                  Total Population
                43.5
                  Median age
                58.33%
                  Female population %
                71.4:100
                  Gender ratio (M:F)
                40-44 years
                  Largest age group
                56.6
                  Total dependency ratio
                White
                  Largest racial group
                Zero
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Big Sandy's population is old compared to the rest of the country:
- The median age in Big Sandy is 43.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Big Sandy's population under 18 was 20.90%, compared to the 22.51% nationwide.
- Big Sandy's elderly or the senior population (over 65 age) was 19.21% as compared to 16.04% nationwide.
- Of the total population in Big Sandy, 16.95% were under the age of 15, 18.50% aged 15 to 29, 45.34% aged 30 to 64, 18.22% aged 65 to 84, and 0.99% were 85 years of age and older.
 
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Gender
There are 118 more females than males in Big Sandy:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 58.33% females and 41.67% males in Big Sandy, MT.
- The Big Sandy, MT gender ratio is 71.4:100 i.e. 71.4 men to 100 women (0.714).
- For male population, the largest age group is 60-64 years with a population of 28.
- For the female population, the largest age group is 40-44 years with a population of 67.
 
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Race / Ethnicity
Big Sandy's population has become increasingly diverse:
- Racial distribution of Big Sandy population: 77.82% are White, 1.13% are Black or African American, 5.65% are American Indian and Alaska Native, 0.71% are Asian and 14.69% are multiracial.
- Big Sandy's racial breakdown clearly shows that there is an absolute majority of White population in the town.
- By ethnicity, Zero is Hispanic or Latino (of any race), and 708 (100% of the total population) is Non-Hispanic.
- The largest racial group in Big Sandy is White with a population of 551 (77.82% of the total population).
 
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Year by year
Big Sandy's population has already reached its peak and is showing a trend of decline:
- The peak population was 720 in the year 2000
- From 2000 to 2010, Big Sandy's population decreased by 126 (17.50%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Big Sandy's population increased by 11 (1.85%), 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, Big Sandy's population was lowest in year 2019 at 567.
 
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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)
