Big Arm

In Lake County, Montana.

Population: 142

Located in Lake County, Montana, Big Arm is a community with a population of 142.

Between 2019 and 2023, Big Arm's population declined 16.0% from 169 to 142.

Owners occupy 100.0% of the area's occupied homes. The median resident is 31.5 years old.

Demographics

ACS 2019–2023

Population: 142
Median age: 31.5 yrs
Median household income: —
Median home value: —
Median gross rent: —
Housing units: 82
Homeownership rate: 100.0%
Bachelor's degree or higher: 11.2%
Unemployment rate: 0.0%

Trends

ACS 5-year · 2019–2023

Population

169142

Year	Population
2019	169
2020	89
2021	82
2022	168
2023	142

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 519.0%

5 to 1712.0%

18 to 240.0%

25 to 3431.0%

35 to 4425.4%

45 to 540.0%

55 to 640.0%

65 to 747.7%

75 and over4.9%

	Count	Share
Under 5	27	19.0%
5 to 17	17	12.0%
18 to 24	0	0.0%
25 to 34	44	31.0%
35 to 44	36	25.4%
45 to 54	0	0.0%
55 to 64	0	0.0%
65 to 74	11	7.7%
75 and over	7	4.9%

Race & ethnicity

	Count	Share
White (non-Hispanic)	56	39.4%
Black or African American	0	0.0%
American Indian & Alaska Native	86	60.6%
Asian	0	0.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	0	0.0%
Hispanic or Latino (any race)	0	0.0%

Educational attainment (age 25+)

No high school diploma25.5%

High school graduate17.3%

Some college or associate's45.9%

Bachelor's degree11.2%

Graduate or professional degree0.0%

	Count	Share
No high school diploma	25	25.5%
High school graduate	17	17.3%
Some college or associate's	45	45.9%
Bachelor's degree	11	11.2%
Graduate or professional degree	0	0.0%

Commute to work

Drove alone100.0%

Carpooled0.0%

Public transit0.0%

Walked0.0%

Bicycle0.0%

Worked from home0.0%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	55	100.0%
Carpooled	0	0.0%
Public transit	0	0.0%
Walked	0	0.0%
Bicycle	0	0.0%
Worked from home	0	0.0%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	27	49.1%
15 to 29 min	28	50.9%
30 to 44 min	0	0.0%
45 to 59 min	0	0.0%
60+ min	0	0.0%

Households

Average household size: 2.90
Poverty rate: 55.6% (79 of 142)

	Count	Share
Family households	49	100.0%
Nonfamily households	0	0.0%

Housing

Median year structure built: 1976

Occupancy

	Count	Share
Occupied	49	59.8%
Vacant	33	40.2%

Tenure (of occupied units)

	Count	Share
Owner-occupied	49	100.0%
Renter-occupied	0	0.0%

1-unit, detached53.7%

1-unit, attached0.0%

2 to 4 units0.0%

5 to 19 units0.0%

20 or more units0.0%

Mobile home & other46.3%

Units in structure

	Count	Share
1-unit, detached	44	53.7%
1-unit, attached	0	0.0%
2 to 4 units	0	0.0%
5 to 19 units	0	0.0%
20 or more units	0	0.0%
Mobile home & other	38	46.3%

Geography

Place GEOID: 3005800
Type (LSAD): 57
Land area: 5.42 sq mi
Water area: 0 sq mi
Center point: 47.7936, -114.2700