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World Population Review
Boulder County, Colorado Population 2021
Boulder County, Colorado's estimated population is 329,316 with a growth rate of 0.48% in the past year according to the most recent United States census data. Boulder County, Colorado is the 9th largest county in Colorado. The 2010 Population was 295,037 and has seen a growth of 11.62% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 329,316 | 1,560 | 0.48% |
| 2020 | 327,756 | 1,560 | 0.48% |
| 2019 | 326,196 | 1,560 | 0.48% |
| 2018 | 324,636 | 2,195 | 0.68% |
| 2017 | 322,441 | 1,191 | 0.37% |
| 2016 | 321,250 | 3,223 | 1.01% |
| 2015 | 318,027 | 5,794 | 1.86% |
| 2014 | 312,233 | 2,910 | 0.94% |
| 2013 | 309,323 | 4,753 | 1.56% |
| 2012 | 304,570 | 4,613 | 1.54% |
| 2011 | 299,957 | 4,920 | 1.67% |
| 2010 | 295,037 | 69,698 | 30.93% |
| 1990 | 225,339 | 35,714 | 18.83% |
| 1980 | 189,625 | 57,736 | 43.78% |
| 1970 | 131,889 | 57,635 | 77.62% |
| 1960 | 74,254 | 25,958 | 53.75% |
| 1950 | 48,296 | 10,858 | 29.00% |
| 1940 | 37,438 | 4,982 | 15.35% |
| 1930 | 32,456 | 595 | 1.87% |
| 1920 | 31,861 | 1,531 | 5.05% |
| 1910 | 30,330 | 8,786 | 40.78% |
| 1900 | 21,544 | 7,462 | 52.99% |
| 1890 | 14,082 | 4,359 | 44.83% |
| 1880 | 9,723 | 7,784 | 401.44% |
| 1870 | 1,939 | 0.00% |
2021 Growth Rate
0.48%
County Website
State
Founded
November 1, 1861
County Seat
Lat./Long.
2010 Population
295,037
Growth Since 2010
11.62%
Boulder County, Colorado Population Growth
| Race | Population | Percentage |
|---|---|---|
| White | 286,950 | 88.97% |
| Asian | 15,281 | 4.74% |
| Two or More Races | 9,782 | 3.03% |
| Some Other Race | 5,934 | 1.84% |
| Black or African American | 2,944 | 0.91% |
| American Indian and Alaska Native | 1,416 | 0.44% |
| Native Hawaiian and Other Pacific Islander | 203 | 0.06% |
Boulder County, Colorado Population by Race
Boulder County, Colorado Population Pyramid $2021
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Boulder County, Colorado Population by Age
Boulder County, Colorado Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 127,415 | 2.44 | 62.2 |
| Married | 59,392 | 3.07 | 80.9 |
| Non Family | 53,602 | 1.53 | 44.3 |
| Female | 9,899 | 3.27 | 50.8 |
| Male | 4,522 | 3.14 | 54 |
3.01
Average Family Size
2.44
Average Household Size
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Boulder County, Colorado Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 4,345 | 2.04% |
| 9th to 12th Grade | 6,251 | 2.94% |
| High School Graduate | 24,916 | 11.71% |
| Some College | 32,127 | 15.10% |
| Associates Degree | 13,045 | 6.13% |
| Bachelors Degree | 72,262 | 33.96% |
| Graduate Degree | 59,809 | 28.11% |
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Boulder County, Colorado Educational Attainment by Sex (over 25)
Boulder County, Colorado Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 173,954 | 171,020 | 115,725 |
| Hispanic | 23,049 | 16,498 | 6,103 |
| Asian | 9,693 | 9,088 | 7,026 |
| 2+ Races | 4,224 | 3,813 | 2,537 |
| Other Race | 3,397 | 2,322 | 814 |
| Black | 1,841 | 1,617 | 561 |
| Native American | 913 | 772 | 220 |
| Islander | 143 | 143 | 77 |
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among asian people with a rate of 72.49%.
Boulder County, Colorado Educational Attainment by Race
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$50,451
Average Earnings
$61,761
Average Male
$39,396
Average Female
Boulder County, Colorado Earnings by Educational Attainment
Boulder County, Colorado Language by Age
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Boulder County, Colorado Language
84.34% of Boulder County, Colorado residents speak only English, while 15.66% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 8.72% of the population.
Boulder County, Colorado Language
Boulder County, Colorado Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 241,865 | 25,675 | 10.62% |
| Hispanic | 43,123 | 7,336 | 17.01% |
| Asian | 14,005 | 1,550 | 11.07% |
| Multiple | 9,502 | 1,313 | 13.82% |
| Other | 5,934 | 1,101 | 18.55% |
| Black | 2,718 | 607 | 22.33% |
| Native | 1,379 | 220 | 15.95% |
| Islander | 163 | 33 | 20.25% |
11.70%
Overall Poverty Rate
11.37%
Male Poverty Rate
12.03%
Female Poverty Rate
Poverty in Boulder County, Colorado
The race most likely to be in poverty in Boulder County, Colorado is Black, with 22.33% below the poverty level.
The race least likely to be in poverty in Boulder County, Colorado is White, with 10.62% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.80%. Among those working part-time, it was 21.33%, and for those that did not work, the poverty rate was 18.96%.
Boulder County, Colorado Poverty
Boulder County, Colorado Poverty Rate by Education
Boulder County, Colorado Marital Status
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Marriage Rates
46.2%
Overall Marriage Rate
46.1%
Male Marriage Rate
46.4%
Female Marriage Rate
Boulder County, Colorado Married by Age and Sex
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Boulder County, Colorado Marriage
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.
Boulder County, Colorado Marital Status by Race
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Boulder County, Colorado Marital Status
Boulder County, Colorado Veterans by War
Boulder County, Colorado Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 12,953 | 5.55% |
| Hispanic | 948 | 3.17% |
| 2+ Races | 285 | 4.68% |
| Asian | 175 | 1.40% |
| Other Race | 163 | 3.68% |
| Black | 151 | 6.11% |
| Native American | 36 | 3.29% |
| Islander | 16 | 7.88% |
Boulder County, Colorado Veterans by Race
Boulder County, Colorado Veterans by Education
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7.42%
Veteran Poverty Rate
24.44%
Veteran Disability Rate
Boulder County, Colorado Veterans by Education
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68.6%
Labor Force Participation
65.7%
Employment Rate
4.2%
Unemployment Rate
Boulder County, Colorado Employment by Age
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Boulder County, Colorado Employment by Race
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Boulder County, Colorado Employment by Education
Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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89.34%
Native Born
10.66%
Foreign Born
6.12%
Non Citizen
4.54%
Naturalized
Place of Birth
89.34% of Boulder County, Colorado residents were born in the United States, with 31.35% having been born in Colorado. 6.12% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Boulder County, Colorado Place of Birth
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990