St. Mary, Montana Population 2024

282

St. Mary Demographics

According to the most recent ACS, the racial composition of St. Mary was:

  • White: 76.03%
  • Native American: 9.92%
  • Native Hawaiian or Pacific Islander: 7.02%
  • Other race: 7.02%
  • Black or African American: 0%
  • Asian: 0%
  • Two or more races: 0%
State
Montana
Land Area (mi²)
0.8 sq mi
Density (mi²)
374.70/sq mi
Growth Since 2020
-51.3% (-297)
The current population of St. Mary, Montana is 282 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 579.

Population by Race

Race
Population
Percentage (of total)
White18476.03%
Native American249.92%
Native Hawaiian or Pacific Islander177.02%
Other race177.02%
Black or African American00%
Asian00%
Two or more races00%

White

Native American

Native Hawaiian or Pacific Islander

Other race

Black or African American

Asian

Two or more races

St. Mary Population by Race

St. Mary Population Pyramid 2024

St. Mary Median Age

25.1

Total

29

Male

23.8

Female

St. Mary Adults

There are 225 adults, (0 of whom are seniors) in St. Mary.

St. Mary Age Dependency

7.6

Age Dependency Ratio

0

Old Age Dependency Ratio

7.6

Child Dependency Ratio

St. Mary Sex Ratio

Female8635.54%
Male15664.46%

St. Mary Population by Age

St. Mary Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2401000
Non Family2401000
Married0000
Male0000
Female0000

0

Average Family Size

0

Average Household Size

100.0%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

St. Mary Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade00%
Associates Degree4234.15%
Bachelors Degree4536.59%
Graduate Degree00%
High School Graduate1713.82%
Less Than 9th Grade00%
Some College1915.45%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

St. Mary Educational Attainment by Sex (over 25)

St. Mary Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White828228
Native American24240
Islander171717

The highest rate of high school graduation is among white people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 100%.

St. Mary Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$28,958$0$29,583
Graduate Degree$0$0$0
High School Graduate$0$0$0
Less Than 9th Grade$0$0$0
Overall$28,633$28,534$29,583
Some College$0$0$0

$28,633

Average Earnings

$28,534

Average Male

$29,583

Average Female

St. Mary Earnings by Educational Attainment

St. Mary Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

St. Mary Language

74.79% of St. Mary residents speak only English, while 25.21% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.81% of the population.

St. Mary Language

St. Mary Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White1533925.49%
Hispanic3131100%
Native2424100%
Islander1717100%
Other1717100%

49.33%

Overall Poverty Rate

36.69%

Male Poverty Rate

69.77%

Female Poverty Rate

Poverty in St. Mary

The race most likely to be in poverty in St. Mary is Native, with 100% below the poverty level.

The race least likely to be in poverty in St. Mary is White, with 25.49% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 51.37%, and for those that did not work, the poverty rate was 100%.

St. Mary Poverty

rate

Rate
Poverty
Less Than 9th Grade0%
Some College39.34%
Bachelors or Greater37.78%
High School0%

St. Mary Poverty Rate by Education

rate

Rate
Poverty
Male Employed35.77%
Male Unemployed0%
Female Unemployed100%
Female Employed50%

St. Mary Poverty Rate by Employment Status and Sex

St. Mary Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families--
Households-$-999,999,999
Married Families--
Non Families-$-999,999,999

mean

median

Income by Household Type

St. Mary Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

1.3%

Overall Marriage Rate

0.0%

Male Marriage Rate

3.5%

Female Marriage Rate

St. Mary Married by Age and Sex

male

female

St. Mary Marriage

The age group where males are most likely to be married is 15-19, while the female age group most likely to be married is 20-34.

St. Mary Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

St. Mary Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

18

Number of Veterans

14

Male Veterans

4

Female Veterans

War
Veterans
Second Gulf War18
First Gulf War0
Vietnam0
Korea0
World War II0

St. Mary Veterans by War

count

Age Group
Veterans
18 to 3418
35 to 540
55 to 640
65 to 740
75+0

St. Mary Veterans by Age

count

Name
Veterans
% of Total
White1810.78%

St. Mary Veterans by Race

St. Mary Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

0%

Veteran Disability Rate

St. Mary Veterans by Education

LaborForceParticipation

91.6%

Labor Force Participation

84%

Employment Rate

8.3%

Unemployment Rate

St. Mary Employment by Age

LaborForceParticipation

St. Mary Employment by Race

LaborForceParticipation

St. Mary Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

26.03%

Born in St. Mary

85.95%

Native Born

14.05%

Foreign Born

14.05%

Non Citizen

0%

Naturalized

Place of Birth

85.95% of St. Mary residents were born in the United States, with 26.03% having been born in Montana. 14.05% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Oceania.

St. Mary Place of Birth

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2024282207.63%
2023262208.26%
2022242-249-50.71%
2021491-88-15.2%
202057900%

St. Mary Population by Year