Boulder, Colorado Population 2018

Boulder is the county seat and most populous city of Boulder County, Colorado. It is also the 11th largest city in the state. Boulder is located at the foothills of the Rocky Mountains about 25 miles northwest of Denver.

The estimated population of Boulder is 104,000, up from 97,395 at the 2010 census. The population of the Boulder Metropolitan Statistical Area is much larger, estimated at 300,000. The city has a population density of 3,947 people per square mile, or 1,524 per square kilometer.

Boulder is well-known for its history, the University of Colorado and its large hippie population in the 1960s. The city also frequently tops rankings for education, health and quality of life.

Boulder Demographics

At the 2010 census, the racial and ethnic composition of Boulder was:

  • White: 88.0%
  • Asian: 4.7%
  • Black or African American: 0.9%
  • Native American: 0.4%
  • Pacific Islander: 0.1%
  • Other race: 3.2%
  • Two or more races: 2.6%
  • Hispanic or Latino of any race: 8.7%

Boulder has a population younger than the national average with a median age of 28.7 years compared to the U.S. median age of 37.2. About one-third of Boulder's population are between the ages of 18 and 24, mostly due to a large number of university students.

The city has a median household income of just over $57,000, with a median family income of $113,600. Full-time female workers make $47,500 compared to full-time male workers at $72,000. A full 25% of the population lives below the poverty line. Boulder usually has higher home prices than nearby areas.

Boulder History

Boulder was first home to Native Americans who had a village nearby. The first non-native settlement was established in 1858 by gold seekers. The Boulder City Town Company was created a year later with lots that had a purchase price of $1,000, which was lowered to bring in more residents. The government was formalized in 1871 when the town was incorporated.

By 1880, Boulder had a population of more than 3,000. Many trainees came to the area after World War II as business people and students, joining veterans attending the University. Prior to this, the population had not grown since the 1920s.

Boulder Facts

  • Among 14 comparable cities, Boulder has the most people who walk to work, work at home and carpool, and it ranks second in terms of people who bike.
  • Bicyling is so popular in the city that the Boulder Creek bike path is often plowed of snow before the roads.
  • Colorado has fewer overweight people per capital and more people who exercise regularly than any other state.
  • 70% of Boulderites own a bicycle.
  • Boulder is the largest beer-producing triangle in the world with Anheuser-Busch and Coors.
  • Robert Redford was a janitor in Boulder before he became famous.
  • Boulder has a "blue line" which deters expanding structures over 4 stories that would prevent views of the mountains.
  • Boulder's top rankings include: Lesser-Known LGBT Family-Friendly City, Best City to Raise an Outdoor Kid, Top 10 Healthiest Cities to Live and Retire (#6), Top Brainiest City, Top Happiest City, Top 10 Cities for Artists (#8).
Year Population Growth Annual Growth Rate
2017107,125-719-0.67%
2016107,8443820.36%
2015107,4622,1812.07%
2014105,2811,6741.62%
2013103,6071,5541.52%
2012102,0531,0040.99%
2011101,0492,2792.31%
201098,7704,0970.42%
200094,67311,3611.29%
199083,3126,6270.83%
198076,6859,8151.38%
197066,87029,1525.89%
196037,71817,7196.55%
195019,9997,0414.44%
194012,9581,7351.45%
193011,2232170.20%
192011,0061,4671.44%
19109,5393,3894.49%
19006,1502,8206.33%
18903,3302610.82%
18803,0690.00%

Boulder Population in 2018Source: By Taken by Jesse Varner. Modified by AzaToth. [CC BY-SA 2.5 (https://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons

Population by Race

Race Population
White92,834
Asian5,585
Two or More Races3,332
Some Other Race2,066
Black or African American1,203
American Indian and Alaska Native309
Native Hawaiian and Other Pacific Islander91

Race Data via US Census (2016 ACS 5-Year Survey)

Boulder Population Pyramid 2018

0%5%10%15%20% Male Population0%5%10%15%20% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

Boulder Median Age

28.7


Total

27.6


Male

30.3


Female

Boulder Adults

There are 91,505 adults, (10,858 of which are seniors) in Boulder.

Boulder Age Dependency

30.6

Age Dependency Ratio

13.4

Old Age Dependency Ratio

17.2

Child Dependency Ratio

Boulder Sex Ratio

Female

50,606

48.00%

Male

54,814

52.00%

Boulder Households and Families

Boulder Renter vs Owner Occupied by Household Type

Boulder Household Types

Type Owner Renter
Married74.9%25.1%
Female54.6%45.4%
Male49.4%50.6%
All47.7%52.3%
Non Family31.1%68.9%

47.7%

Rate of Home Ownership

Boulder Households by Type

Type Count Average Size Owned
All42,4132.2547.7
Non Family24,6191.7631.1
Married14,4752.9574.9
Female2,0762.9654.6
Male1,2432.6549.4

2.85

Average Family Size

2.25

Average Household Size

7.3%

Unmarried (Opposite Sex)

0.5%

Unmarried (Same Sex)

Boulder Households

Boulder Education

Boulder Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade1,0661.78%
9th to 12th Grade1,0891.82%
High School Graduate4,7117.87%
Some College7,49212.51%
Associates Degree2,3003.84%
Bachelors Degree20,16533.68%
Graduate Degree23,05238.50%

Boulder Educational Attainment by Race

Name Total High School Bachelors
White50,86450,22338,577
Hispanic4,2143,0071,527
Asian3,1212,8772,149
Multiple Races1,1461,115713
Other Race946553190
Black620587286
Native American208169129
Islander30169

The highest rate of high school graduation is among white people with a rate of 98.74%.

The highest rate of bachelors degrees is among white people with a rate of 75.84%.

Boulder Earnings by Educational Attainment

Name Average Male Female
Overall$43,895$51,888$36,138
Less Than High School$21,941$25,430$18,792
High School Grad$23,275$27,614$19,671
Some College$31,027$34,871$25,133
Bachelors Degree$42,882$51,674$36,312
Graduate Degree$60,378$80,194$49,259

$43,895

Average Earnings

$51,888

Average Male

$36,138

Average Female

Boulder Language

Boulder Language by Age

Boulder Language

84.65% of Boulder residents speak only English, while 15.35% speak other languages. The largest non-English language is Spanish, which is spoken by 6.62% of the population.

Boulder Poverty

Boulder Poverty by Race

Name Total In Poverty Poverty Rate
White78,84316,34220.73%
Hispanic8,6312,30526.71%
Asian4,4191,19327.00%
Multiple3,06682226.81%
Other2,01163431.53%
Black1,05439937.86%
Native2887726.74%
Islander301860.00%

21.99%

Overall Poverty Rate

22.51%

Male Poverty Rate

21.42%

Female Poverty Rate

Poverty in Boulder

The race most likely to be in poverty in Boulder is Islander, with 60.00% below the poverty level.

The race least likely to be in poverty in Boulder is White, with 20.73% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.73%. Among those working part-time, it was 40.27%, and for those that did not work, the poverty rate was 31.52%.

Boulder Poverty Rate by Education

Name Poverty
Less Than High School23.34%
High School15.88%
Some College13.53%
Bachelors or Greater6.81%

Boulder Poverty Rate by Employment Status and Sex

Name Poverty
Male Unemployed47.84%
Female Unemployed44.42%
Female Employed18.28%
Male Employed14.62%

Boulder Income

Boulder Income by Household Type

Name Median Mean
Households$60,569$93,430
Families$107,216$141,814
Married Families$123,949$154,055
Non Families$37,267$56,894

Boulder Marital Status

Boulder Marital Status

Marriage Rates

33.1%

Overall Marriage Rate

32.6%

Male Marriage Rate

33.7%

Female Marriage Rate

Boulder Married by Age and Sex

Boulder Marriage

The age group where males are most likely to be married is 45To54, while the female age group most likely to be married is 45To54.

Boulder Marital Status by Race

Boulder Veterans

Boulder Veterans by War

3,402

Number of Veterans

3,112

Male Veterans

290

Female Veterans

Name Veterans
Vietnam1,231
Second Gulf War688
First Gulf War452
Korea357
World War II349

Boulder Veterans by Age

Name Veterans
75+1,032
65 to 74974
35 to 54595
18 to 34569
55 to 64232

Boulder Veterans by Race

Name Veterans % of Total
White3,2263.98%
Hispanic2383.26%
Other905.51%
2 or More492.01%
Black222.09%
Asian150.30%

Boulder Veterans by Education

8.43%

Veteran Poverty Rate

21.61%

Veteran Disability Rate

Boulder Employment Status

Boulder Employment by Age

66.8%

Labor Force Participation

62.7%

Employment Rate

6.1%

Unemployment Rate

Boulder Employment by Race

Boulder Employment by Education

Boulder 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

26.68%

Born in Colorado

89.02%

Native Born

10.98%

Foreign Born

6.68%

Non Citizen

Place of Birth

89.02% of Boulder residents were born in the United States, with 26.68% having been born in Colorado. 6.68% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.