St. Mary Population

2010–2026

312

2026 projection

1% since 2020 (increase)

0100200300400201020122014201620182020202220242026

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. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202631200.00%
2025312+20.65%
2024310-20.64%
2023312+10.32%
202231100.00%
2021311+20.65%
2020309-4011.46%
201934900.00%
2018349+10.29%
2017348-10.29%

Showing 10 of 17 years.

St. Mary Demographics

48.9median age

Median age

Female53.1 yrs
Male38.3 yrs

Adults

229
45 seniors · 20%184 other adults

Sex

Female 49.5% · 141Male 50.5% · 144

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 3 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 Income

$49,643median household income

Median household income

$49,643

Half of households earn more, half earn less

Median earnings

$34,722

Typical yearly pay for a worker 25 or older.

Poverty rate

25.1%

About 1 in 4 residents

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

St. Mary Marital Status

44% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married44%43%44%
Never married29%36%22%
Divorced17%16%18%
Widowed9%2%16%
Separated1%3%0%

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