Boulder is a city located in Jefferson County Montana. Boulder has a 2024 population of 1,328. It is also the county seat of Jefferson County. Boulder is currently growing at a rate of 2.39% annually and its population has increased by 10.12% since the most recent census, which recorded a population of 1,206 in 2020.
The average household income in Boulder is $71,697 with a poverty rate of 11.51%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Boulder is 41.3 years, 43.8 years for males, and 36.8 years for females.
According to the most recent ACS, the racial composition of Boulder was:
White
Native American
Two or more races
Other race
Black or African American
Asian
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 474 | 2.31 | 69.4 | 30.6 |
| Non Family | 218 | 1.2 | 62.8 | 37.2 |
| Married | 212 | 3.3 | 74.5 | 25.5 |
| Female | 34 | 2.76 | 70.6 | 29.4 |
| Male | 10 | 3.7 | 100 | 0 |
3.17
Average Family Size
2.31
Average Household Size
69.4%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among other race people with a rate of 100%.
The highest rate of bachelors degrees is among white people with a rate of 27.59%.
All
Male
Female
$36,429
Average Earnings
$39,659
Average Male
$29,938
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
98.23% of Boulder residents speak only English, while 1.77% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.59% of the population.
rate
11.51%
Overall Poverty Rate
19.62%
Male Poverty Rate
2.18%
Female Poverty Rate
The race most likely to be in poverty in Boulder is Hispanic, with 22.5% below the poverty level.
The race least likely to be in poverty in Boulder is White, with 11.89% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.39%. Among those working part-time, it was 24.3%, and for those that did not work, the poverty rate was 18.05%.
Married
Widowed
Divorced
Separated
NeverMarried
41.6%
Overall Marriage Rate
37.4%
Male Marriage Rate
48.3%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
13.98%
Veteran Poverty Rate
66.67%
Veteran Disability Rate
LaborForceParticipation
57.4%
Labor Force Participation
54%
Employment Rate
6%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
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.
Europe
Asia
Africa
Oceania
Latin America
North America
54.61%
Born in Boulder
100%
Native Born
0%
Foreign Born
0%
Non Citizen
0%
Naturalized
100% of Boulder residents were born in the United States, with 54.61% having been born in Montana. 0% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 1,480 | 30 | 2.07% |
| 2028 | 1,450 | 31 | 2.18% |
| 2027 | 1,419 | 30 | 2.16% |
| 2026 | 1,389 | 31 | 2.28% |
| 2025 | 1,358 | 30 | 2.26% |
| 2024 | 1,328 | 31 | 2.39% |
| 2023 | 1,297 | 30 | 2.37% |
| 2022 | 1,267 | 32 | 2.59% |
| 2021 | 1,235 | 29 | 2.4% |
| 2020 | 1,206 | -70 | -5.49% |
| 2019 | 1,276 | 13 | 1.03% |
| 2018 | 1,263 | 15 | 1.2% |
| 2017 | 1,248 | 14 | 1.13% |
| 2016 | 1,234 | 23 | 1.9% |
| 2015 | 1,211 | 9 | 0.75% |
| 2014 | 1,202 | 8 | 0.67% |
| 2013 | 1,194 | 15 | 1.27% |
| 2012 | 1,179 | 1 | 0.08% |
| 2011 | 1,178 | -2 | -0.17% |
| 2010 | 1,180 | 0 | 0% |