Overview
302,787
Total Population
36.3
Median age
51.33%
Female population %
94.8:100
Gender ratio (M:F)
25-29 years
Largest age group
43.1
Total dependency ratio
White
Largest racial group
12,799
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
St. Louis city's population is young compared to the rest of the country:
- The median age in St. Louis city is 36.3, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- St. Louis city's population under 18 was 18.99%, compared to the 22.51% nationwide.
- St. Louis city's elderly or the senior population (over 65 age) was 13.93% as compared to 16.04% nationwide.
- Of the total population in St. Louis city, 16.21% were under the age of 15, 22.03% aged 15 to 29, 47.83% aged 30 to 64, 12.27% aged 65 to 84, and 1.66% were 85 years of age and older.

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Gender
There are 8,073 more females than males in St. Louis city:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.33% females and 48.67% males in St. Louis city, MO.
- The St. Louis city, MO gender ratio is 94.8:100 i.e. 94.8 men to 100 women (0.948).
- For male population, the largest age group is 25-29 years with a population of 15,109.
- For the female population, the largest age group is 25-29 years with a population of 16,335.

Read more about St. Louis city, MO population by gender ➔
Race / Ethnicity
St. Louis city's population has become increasingly diverse:
- Racial distribution of St. Louis city population: 46.31% are White, 44.79% are Black or African American, 0.26% are American Indian and Alaska Native, 3.38% are Asian, 0.07% are Native Hawaiian and other Pacific Islander, 1.24% are some other race and 3.96% are multiracial.
- St. Louis city's racial breakdown clearly shows that there is no majority of any race in the county.
- By ethnicity, 12,799 is Hispanic or Latino (of any race), and 289,988 (95.77% of the total population) is Non-Hispanic.
- The largest racial group in St. Louis city is White with a population of 140,219 (46.31% of the total population).

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Year by year
St. Louis city's population has already reached its peak and is showing a trend of decline:
- The peak population was 346,937 in the year 2000
- From 2000 to 2010, St. Louis city's population decreased by 27,570 (7.95%), as compared to the national growth of 9.63%.
- From 2010 to 2020, St. Louis city's population decreased by 18,884 (5.91%), 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, St. Louis city's population was lowest in year 2022 at 286,578.

Read more about St. Louis city, MO population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)