St. Mary's Population

2010–2026

560

2026 projection

6.5% since 2020 (decrease)

0100200300400500600201020122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for St. Mary's. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026560-71.23%
2025567-40.70%
2024571-30.52%
2023574-132.21%
2022587-132.17%
2021600+10.17%
2020599+274.72%
2019572+20.35%
2018570+71.24%
2017563+50.90%

Showing 10 of 17 years.

St. Mary's Demographics

28.1median age

Median age

Female26.3 yrs
Male31.1 yrs

Adults

549
62 seniors · 11%487 other adults

Sex

Female 49.8% · 403Male 50.2% · 407

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 8 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

St. Mary's Income

$53,750median household income

Median household income

$53,750

Half of households earn more, half earn less

Median earnings

$33,667

Typical yearly pay for a worker 25 or older.

Poverty rate

28.7%

About 1 in 3 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

St. Mary's Marital Status

32% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married32%29%34%
Never married57%62%52%
Divorced5%5%5%
Widowed5%4%6%
Separated1%0%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201