Boulder County, Colorado Population 2023

341,615

Boulder County, Colorado's estimated 2023 population is 341,615 with a growth rate of 1.07% 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 294,567 and has seen a growth of 15.97% since that time.

Note: data after 2021 is projected based on recent change

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2023 Growth Rate
1.07% (3,619)
County Website
Boulder County
Founded
November 1, 1861
County Seat
Boulder
2010 Population
294,567
Growth Since 2010
15.97% (47,048)

Boulder County, Colorado Population 2023

Population by Race

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White

Two or more races

Asian

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Boulder County, Colorado Population by Race

Boulder County, Colorado Population Pyramid 2023

Boulder County, Colorado Median Age

37.2

Total

35.9

Male

38.6

Female

Boulder County, Colorado Adults

There are 266,578 adults, (48,274 of whom are seniors) in Boulder County, Colorado.

Boulder County, Colorado Age Dependency

50.6

Age Dependency Ratio

22.1

Old Age Dependency Ratio

28.5

Child Dependency Ratio

Boulder County, Colorado Sex Ratio

Female162,57349.46%
Male166,14050.54%

Boulder County, Colorado Population by Age

Boulder County, Colorado Renter vs Owner Occupied by Household Type

2.98

Average Family Size

2.41

Average Household Size

62.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Boulder County, Colorado Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Boulder County, Colorado Educational Attainment by Sex (over 25)

Boulder County, Colorado Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among native american people with a rate of 81.31%.

The highest rate of bachelors degrees is among white people with a rate of 54.76%.

Boulder County, Colorado Educational Attainment by Race

All

Male

Female

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$54,704

Average Earnings

$65,929

Average Male

$43,340

Average Female

Boulder County, Colorado Earnings by Educational Attainment

Boulder County, Colorado Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Boulder County, Colorado Language

85.38% of Boulder County, Colorado residents speak only English, while 14.62% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 8.02% of the population.

Boulder County, Colorado Language

Boulder County, Colorado Poverty by Race

rate

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10.99%

Overall Poverty Rate

11.04%

Male Poverty Rate

10.94%

Female Poverty Rate

Poverty in Boulder County, Colorado

The race most likely to be in poverty in Boulder County, Colorado is Hispanic, with 18.24% below the poverty level.

The race least likely to be in poverty in Boulder County, Colorado is Islander, with 9.3% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.5%. Among those working part-time, it was 20.42%, and for those that did not work, the poverty rate was 18.16%.

Boulder County, Colorado Poverty

rate

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Boulder County, Colorado Poverty Rate by Education

rate

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Boulder County, Colorado Poverty Rate by Employment Status and Sex

Boulder County, Colorado Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Boulder County, Colorado Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

45.5%

Overall Marriage Rate

44.8%

Male Marriage Rate

46.3%

Female Marriage Rate

Boulder County, Colorado Married by Age and Sex

male

female

Boulder County, Colorado Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Boulder County, Colorado Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Boulder County, Colorado Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

13,188

Number of Veterans

11,767

Male Veterans

1,421

Female Veterans

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Boulder County, Colorado Veterans by War

count

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Boulder County, Colorado Veterans by Age

count

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Boulder County, Colorado Veterans by Race

Boulder County, Colorado Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.16%

Veteran Poverty Rate

26.54%

Veteran Disability Rate

Boulder County, Colorado Veterans by Education

LaborForceParticipation

68.1%

Labor Force Participation

64.9%

Employment Rate

4.6%

Unemployment Rate

Boulder County, Colorado Employment by Age

LaborForceParticipation

Boulder County, Colorado Employment by Race

LaborForceParticipation

Boulder County, Colorado 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

31.86%

Born in Boulder County, Colorado

88.58%

Native Born

9.73%

Foreign Born

5.11%

Non Citizen

4.62%

Naturalized

Place of Birth

88.58% of Boulder County, Colorado residents were born in the United States, with 31.86% having been born in Colorado. 5.11% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Boulder County, Colorado Place of Birth

Sources