Boulder, CO Population

Overview

104,930

Total Population

28.9

Median age

48.51%

Female population %

106.2:100

Gender ratio (M:F)

20-24 years

Largest age group

27.9

Total dependency ratio

White

Largest racial group

11,168

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Boulder's population is young compared to the rest of the country:

The median age in Boulder is 28.9, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Boulder's population under 18 was 12.51%, compared to the 22.51% nationwide.
Boulder's elderly or the senior population (over 65 age) was 11.81% as compared to 16.04% nationwide.
Of the total population in Boulder, 10.03% were under the age of 15, 42.32% aged 15 to 29, 35.84% aged 30 to 64, 10.02% aged 65 to 84, and 1.79% were 85 years of age and older.

There are 3,134 less females than males in Boulder:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.51% females and 51.49% males in Boulder, CO.
The Boulder, CO gender ratio is 106.2:100 i.e. 106.2 men to 100 women (1.062).
For male population, the largest age group is 20-24 years with a population of 11,543.
For the female population, the largest age group is 20-24 years with a population of 10,031.

Boulder's population has become increasingly diverse:

Racial distribution of Boulder population: 84.25% are White, 1.09% are Black or African American, 0.25% are American Indian and Alaska Native, 5.98% are Asian, 0.06% are Native Hawaiian and other Pacific Islander, 1.85% are some other race and 6.52% are multiracial.
Boulder's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 11,168 is Hispanic or Latino (of any race), and 93,762 (89.36% of the total population) is Non-Hispanic.
The largest racial group in Boulder is White with a population of 88,404 (84.25% of the total population).

Boulder's population has already reached its peak and is showing a trend of decline:

The peak population was 109,118 in the year 2017
From 2000 to 2010, Boulder's population increased by 3,316 (3.51%), as compared to the national growth of 9.63%.
From 2010 to 2020, Boulder's population increased by 10,388 (10.63%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Boulder's population was lowest in year 2004 at 92,774.