Summit County, CO Population

Overview

31,042

Total Population

38.6

Median age

45.92%

Female population %

117.7:100

Gender ratio (M:F)

25-29 years

Largest age group

39.2

Total dependency ratio

White

Largest racial group

4,558

Hispanic population

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

TABLE OF CONTENTS

Age

Summit County's population is old compared to the rest of the country:

The median age in Summit County is 38.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Summit County's population under 18 was 16.27%, compared to the 22.51% nationwide.
Summit County's elderly or the senior population (over 65 age) was 14.44% as compared to 16.04% nationwide.
Of the total population in Summit County, 13.71% were under the age of 15, 18.66% aged 15 to 29, 53.19% aged 30 to 64, 14.05% aged 65 to 84, and 0.39% were 85 years of age and older.

There are 2,530 less females than males in Summit County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 45.92% females and 54.08% males in Summit County, CO.
The Summit County, CO gender ratio is 117.7:100 i.e. 117.7 men to 100 women (1.177).
For male population, the largest age group is 35-39 years with a population of 1,831.
For the female population, the largest age group is 25-29 years with a population of 1,388.

Summit County's population has become increasingly diverse:

Racial distribution of Summit County population: 87.60% are White, 0.19% are Black or African American, 0.31% are American Indian and Alaska Native, 1.23% are Asian, 0.43% are Native Hawaiian and other Pacific Islander, 2.94% are some other race and 7.31% are multiracial.
Summit County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 4,558 is Hispanic or Latino (of any race), and 26,484 (85.32% of the total population) is Non-Hispanic.
The largest racial group in Summit County is White with a population of 27,193 (87.60% of the total population).

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

The peak population was 30,994 in the year 2020
From 2000 to 2010, Summit County's population increased by 4,366 (18.41%), as compared to the national growth of 9.63%.
From 2010 to 2020, Summit County's population increased by 2,919 (10.40%), 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, Summit County's population was lowest in year 2000 at 23,709.