St. Marys, IA Population

Overview

116

Total Population

51.8

Median age

58.62%

Female population %

70.6:100

Gender ratio (M:F)

25-29 years

Largest age group

58.9

Total dependency ratio

White

Largest racial group

2

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in St. Marys is 51.8, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
St. Marys's population under 18 was 9.48%, compared to the 22.51% nationwide.
St. Marys's elderly or the senior population (over 65 age) was 28.45% as compared to 16.04% nationwide.
Of the total population in St. Marys, 8.62% were under the age of 15, 23.28% aged 15 to 29, 39.66% aged 30 to 64, 20.69% aged 65 to 84, and 7.76% were 85 years of age and older.

There are 20 more females than males in St. Marys:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 58.62% females and 41.38% males in St. Marys, IA.
The St. Marys, IA gender ratio is 70.6:100 i.e. 70.6 men to 100 women (0.706).
For male population, the largest age group is 65-69 years with a population of 11.
For the female population, the largest age group is 60-64 years with a population of 11.

St. Marys's population is moderately diverse:

Racial distribution of St. Marys population: 86.21% are White, 1.72% are Black or African American, 6.03% are American Indian and Alaska Native, 0.86% are Native Hawaiian and other Pacific Islander and 5.17% are multiracial.
St. Marys's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 2 is Hispanic or Latino (of any race), and 114 (98.28% of the total population) is Non-Hispanic.
The largest racial group in St. Marys is White with a population of 1 (86.21% of the total population).

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

The peak population was 135 in the year 2000
From 2000 to 2010, St. Marys's population decreased by 8 (5.93%), as compared to the national growth of 9.63%.
From 2010 to 2020, St. Marys's population decreased by 21 (16.54%), 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. Marys's population was lowest in year 2022 at 104.