St. Mary Parish, LA Population

Overview

49,818

Total Population

39.3

Median age

50.48%

Female population %

98.1:100

Gender ratio (M:F)

60-64 years

Largest age group

58.6

Total dependency ratio

White

Largest racial group

3,524

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in St. Mary Parish is 39.3, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
St. Mary Parish's population under 18 was 24.14%, compared to the 22.51% nationwide.
St. Mary Parish's elderly or the senior population (over 65 age) was 16.79% as compared to 16.04% nationwide.
Of the total population in St. Mary Parish, 20.18% were under the age of 15, 18.23% aged 15 to 29, 44.80% aged 30 to 64, 14.69% aged 65 to 84, and 2.10% were 85 years of age and older.

There are 476 more females than males in St. Mary Parish:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.48% females and 49.52% males in St. Mary Parish, LA.
The St. Mary Parish, LA gender ratio is 98.1:100 i.e. 98.1 men to 100 women (0.981).
For male population, the largest age group is 60-64 years with a population of 2,005.
For the female population, the largest age group is 60-64 years with a population of 1,860.

St. Mary Parish's population has become increasingly diverse:

Racial distribution of St. Mary Parish population: 58.42% are White, 30.15% are Black or African American, 1.66% are American Indian and Alaska Native, 1.36% are Asian, 0.01% are Native Hawaiian and other Pacific Islander, 3.26% are some other race and 5.15% are multiracial.
St. Mary Parish's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 3,524 is Hispanic or Latino (of any race), and 46,294 (92.93% of the total population) is Non-Hispanic.
The largest racial group in St. Mary Parish is White with a population of 29,103 (58.42% of the total population).

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

The peak population was 54,553 in the year 2010
From 2000 to 2010, St. Mary Parish's population increased by 1,261 (2.37%), as compared to the national growth of 9.63%.
From 2010 to 2020, St. Mary Parish's population decreased by 5,410 (9.92%), 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 Parish's population was lowest in year 2022 at 47,789.