Overview
          448
                  Total Population
                37.0
                  Median age
                48.44%
                  Female population %
                106.5:100
                  Gender ratio (M:F)
                35-39 years
                  Largest age group
                44.1
                  Total dependency ratio
                White
                  Largest racial group
                Zero
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
West Alton's population is young compared to the rest of the country:
- The median age in West Alton is 37.0, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - West Alton's population under 18 was 15.85%, compared to the 22.51% nationwide.
 - West Alton's elderly or the senior population (over 65 age) was 16.29% as compared to 16.04% nationwide.
 - Of the total population in West Alton, 14.29% were under the age of 15, 16.96% aged 15 to 29, 52.46% aged 30 to 64, 16.29% aged 65 to 84, and 0.00% were 85 years of age and older.
 
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Gender
There are 14 less females than males in West Alton:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.44% females and 51.56% males in West Alton, MO.
 - The West Alton, MO gender ratio is 106.5:100 i.e. 106.5 men to 100 women (1.065).
 - For male population, the largest age group is 30-34 years with a population of 30.
 - For the female population, the largest age group is 35-39 years with a population of 36.
 
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Race / Ethnicity
West Alton's population is moderately diverse:
- Racial distribution of West Alton population: 98.66% are White, 0.45% are Black or African American and 0.89% are multiracial.
 - West Alton's racial breakdown clearly shows that there is an absolute majority of White population in the city.
 - By ethnicity, Zero is Hispanic or Latino (of any race), and 448 (100% of the total population) is Non-Hispanic.
 - The largest racial group in West Alton is White with a population of 442 (98.66% of the total population).
 
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Year by year
West Alton's population has already reached its peak and is showing a trend of decline:
- The peak population was 730 in the year 2005
 - From 2000 to 2010, West Alton's population decreased by 57 (9.83%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, West Alton's population decreased by 166 (31.74%), 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, West Alton's population was lowest in year 2022 at 352.
 
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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)