St. Mary, MO Population

Overview

176

Total Population

54.2

Median age

56.82%

Female population %

76:100

Gender ratio (M:F)

55-59 years

Largest age group

54.4

Total dependency ratio

White

Largest racial group

3

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

St. Mary's population is old compared to the rest of the country:

The median age in St. Mary is 54.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
St. Mary's population under 18 was 9.09%, compared to the 22.51% nationwide.
St. Mary's elderly or the senior population (over 65 age) was 27.84% as compared to 16.04% nationwide.
Of the total population in St. Mary, 7.39% were under the age of 15, 13.64% aged 15 to 29, 51.14% aged 30 to 64, 22.16% aged 65 to 84, and 5.68% were 85 years of age and older.

There are 24 more females than males in St. Mary:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 56.82% females and 43.18% males in St. Mary, MO.
The St. Mary, MO gender ratio is 76:100 i.e. 76 men to 100 women (0.760).
For male population, the largest age group is 50-54 years with a population of 11.
For the female population, the largest age group is 55-59 years with a population of 14.

St. Mary's population is moderately diverse:

Racial distribution of St. Mary population: 93.18% are White, 5.11% are Black or African American and 1.70% are multiracial.
St. Mary's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 3 is Hispanic or Latino (of any race), and 173 (98.30% of the total population) is Non-Hispanic.
The largest racial group in St. Mary is White with a population of 164 (93.18% of the total population).

St. Mary's population has already reached its peak and is showing a trend of decline:

The peak population was 460 in the year 2006
From 2000 to 2010, St. Mary's population decreased by 90 (19.91%), as compared to the national growth of 9.63%.
From 2010 to 2020, St. Mary's population decreased by 55 (15.19%), 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. Mary's population was lowest in year 2020 at 307.