Overview
          1,435
                  Total Population
                30.6
                  Median age
                47.18%
                  Female population %
                112:100
                  Gender ratio (M:F)
                45-49 years
                  Largest age group
                51.5
                  Total dependency ratio
                White
                  Largest racial group
                27
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Greenback's population is young compared to the rest of the country:
- The median age in Greenback is 30.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - Greenback's population under 18 was 26.97%, compared to the 22.51% nationwide.
 - Greenback's elderly or the senior population (over 65 age) was 12.75% as compared to 16.04% nationwide.
 - Of the total population in Greenback, 21.25% were under the age of 15, 26.83% aged 15 to 29, 39.16% aged 30 to 64, 10.94% aged 65 to 84, and 1.81% were 85 years of age and older.
 
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Gender
There are 81 less females than males in Greenback:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 47.18% females and 52.82% males in Greenback, TN.
 - The Greenback, TN gender ratio is 112:100 i.e. 112 men to 100 women (1.120).
 - For male population, the largest age group is 15-19 years with a population of 126.
 - For the female population, the largest age group is 25-29 years with a population of 90.
 
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Race / Ethnicity
Greenback's population is moderately diverse:
- Racial distribution of Greenback population: 98.54% are White, 0.28% are Black or African American, 0.70% are some other race and 0.49% are multiracial.
 - Greenback's racial breakdown clearly shows that there is an absolute majority of White population in the city.
 - By ethnicity, 27 is Hispanic or Latino (of any race), and 1,408 (98.12% of the total population) is Non-Hispanic.
 - The largest racial group in Greenback is White with a population of 1,414 (98.54% of the total population).
 
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Year by year
Greenback's population has already reached its peak and is showing a trend of decline:
- The peak population was 1,216 in the year 2019
 - From 2000 to 2010, Greenback's population increased by 148 (15.55%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, Greenback's population increased by 6 (0.55%), 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, Greenback's population was lowest in year 2000 at 952.
 
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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)