Brockton Flag

Brockton

County Seat:
No
Area (mi²):
0.99
State:
Montana

Brockton is a CDP located in Roosevelt County, Montana. Brockton has a 2026 population of 612. Brockton is currently growing at a rate of 6.81% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Brockton is 30.3 years: 30.2 years for males, and 30.5 years for females. For every 100 females there are 176.1 males.

612
Total Population
618
Density (mi²)
39 6.81%
Growth

Brockton Population

Brockton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026612396.81%
2025573387.1%

Median Age

Overall: 30.3 years
Female: 30.5 years
Male: 30.2 years

Brockton Adults

There are 255 adults, (37 of whom are seniors) in Brockton.

Sex Ratio

Female: 159 (36.2%)
Male: 280 (63.8%)

Demographics

The racial composition of Brockton includes 96.36% Native American, and smaller percentages for White, Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
Native American42396.36%
White102.28%
Two or more races61.37%
Race
Population ↓
Percentage (of total)
Native American42396.36%
White102.28%
Two or more races61.37%

Brockton Marital Status

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)