Boulder County, Colorado Population 2020

Boulder County, Colorado's estimated population is 324,073 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 8th largest county in Colorado.

Year Population Growth Growth Rate
2018326,0782,0050.62%
2017324,0731,5460.48%
2016322,5273,3521.05%
2015319,1755,8771.88%
2014313,2983,0510.98%
2013310,2474,6821.53%
2012305,5654,6681.55%
2011300,8975,1231.73%
2010295,77470,43531.26%
1990225,33935,71418.83%
1980189,62557,73643.78%
1970131,88957,63577.62%
196074,25425,95853.75%
195048,29610,85829.00%
194037,4384,98215.35%
193032,4565951.87%
192031,8611,5315.05%
191030,3308,78640.78%
190021,5447,46252.99%
189014,0824,35944.83%
18809,7237,784401.44%
18701,9390.00%

How Many People Live in Boulder County, Colorado?

324,073

Boulder County, Colorado Population Growth

Population by Race

Race Population Percentage
White284,71988.69%
Asian14,9794.67%
Two or More Races9,9073.09%
Some Other Race6,6982.09%
Black or African American2,8270.88%
American Indian and Alaska Native1,7150.53%
Native Hawaiian and Other Pacific Islander1850.06%

Boulder County, Colorado Population Pyramid 2020

Boulder County, Colorado Median Age

36.2


Total

34.8


Male

37.7


Female

Boulder County, Colorado Adults

There are 258,105 adults, (42,068 of whom are seniors) in Boulder County, Colorado.

Boulder County, Colorado Age Dependency

48.6

Age Dependency Ratio

19.5

Old Age Dependency Ratio

29.1

Child Dependency Ratio

Boulder County, Colorado Sex Ratio

Female

159,675

49.74%

Male

161,355

50.26%

Boulder County, Colorado Households and Families

Boulder County, Colorado Renter vs Owner Occupied by Household Type

Boulder County, Colorado Household Types

Type Owner Renter
Married80.5%19.5%
All62%38%
Female50.5%49.5%
Male48.9%51.1%
Non Family44.5%55.5%

62.0%

Rate of Home Ownership

Type Count Average Size Owned
All125,8942.4662
Married59,0373.0880.5
Non Family52,3051.5444.5
Female9,8023.2750.5
Male4,7503.1748.9

3.02

Average Family Size

2.46

Average Household Size

6.3%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

Boulder County, Colorado Education

Education Attained Count Percentage
Less Than 9th Grade4,1601.98%
9th to 12th Grade6,2202.96%
High School Graduate25,80012.29%
Some College33,19815.82%
Associates Degree12,9066.15%
Bachelors Degree69,52533.13%
Graduate Degree58,04127.66%

Boulder County, Colorado Educational Attainment by Race

Name Total High School Bachelors
White171,984168,892112,284
Hispanic22,49316,5025,810
Asian9,6628,7236,518
Multiple Races4,0003,6692,288
Other Race3,7542,569858
Black1,7851,636651
Native American1,1811,020268
Islander11611670

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 67.46%.

Name Average Male Female
Overall$48,376$59,526$37,418
Less Than High School$25,214$28,989$22,582
High School Grad$30,764$35,743$25,834
Some College$36,039$42,428$30,660
Bachelors Degree$53,887$71,457$41,936
Graduate Degree$70,259$96,754$52,429

$48,376

Average Earnings

$59,526

Average Male

$37,418

Average Female

Boulder County, Colorado Language

Boulder County, Colorado Language by Age

Boulder County, Colorado Language

83.96% of Boulder County, Colorado residents speak only English, while 16.04% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.22% of the population.

Boulder County, Colorado Poverty

Boulder County, Colorado Poverty by Race

Name Total In Poverty Poverty Rate
White241,44426,68611.05%
Hispanic42,6928,36519.59%
Multiple9,6741,54415.96%
Asian13,7271,53011.15%
Other6,6851,10316.50%
Black2,59160723.43%
Native1,67537022.09%
Islander1252721.60%

12.46%

Overall Poverty Rate

12.04%

Male Poverty Rate

12.89%

Female Poverty Rate

Poverty in Boulder County, Colorado

The race most likely to be in poverty in Boulder County, Colorado is Black, with 23.43% below the poverty level.

The race least likely to be in poverty in Boulder County, Colorado is White, with 11.05% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.92%. Among those working part-time, it was 22.23%, and for those that did not work, the poverty rate was 19.59%.

Name Poverty
Less Than High School20.93%
High School13.35%
Some College9.19%
Bachelors or Greater4.87%
Name Poverty
Male Unemployed30.48%
Female Unemployed27.57%
Female Employed9.70%
Male Employed6.58%

Boulder County, Colorado Income

Boulder County, Colorado Income by Household Type

Name Median Mean
Households$78,642$109,446
Families$108,150$138,683
Married Families$124,769$154,571
Non Families$46,406$65,218

Boulder County, Colorado Marital Status

Boulder County, Colorado Marital Status

Marriage Rates

46.4%

Overall Marriage Rate

46.6%

Male Marriage Rate

46.2%

Female Marriage Rate

Boulder County, Colorado Married by Age and Sex

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

Boulder County, Colorado Veterans

14,243

Number of Veterans

13,053

Male Veterans

1,190

Female Veterans

War Veterans
Vietnam5,076
First Gulf War2,475
Second Gulf War2,169
Korea1,212
World War II878
Name Veterans % of Total
White13,4065.81%
Hispanic9933.39%
2 or More2934.87%
Other2064.08%
Black1556.61%
Asian1471.20%
Indian362.72%

$Boulder County, Colorado Veterans by Education

8.06%

Veteran Poverty Rate

24.52%

Veteran Disability Rate

Boulder County, Colorado Employment Status

68.6%

Labor Force Participation

65.3%

Employment Rate

4.8%

Unemployment Rate

Boulder County, Colorado Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

32.01%

Born in Colorado

89.19%

Native Born

10.81%

Foreign Born

6.17%

Non Citizen

Place of Birth

89.19% of Boulder County, Colorado residents were born in the United States, with 32.01% having been born in Colorado. 6.17% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990