Overview
6,359
Total Population
37.7
Median age
49.58%
Female population %
101.7:100
Gender ratio (M:F)
5-9 years
Largest age group
60.3
Total dependency ratio
White
Largest racial group
3,694
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Colusa's population is young compared to the rest of the country:
- The median age in Colusa is 37.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Colusa's population under 18 was 27.55%, compared to the 22.51% nationwide.
- Colusa's elderly or the senior population (over 65 age) was 15.93% as compared to 16.04% nationwide.
- Of the total population in Colusa, 21.69% were under the age of 15, 18.29% aged 15 to 29, 44.09% aged 30 to 64, 13.67% aged 65 to 84, and 2.26% were 85 years of age and older.

Read more about Colusa, CA population by age ➔
Gender
There are 53 less females than males in Colusa:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.58% females and 50.42% males in Colusa, CA.
- The Colusa, CA gender ratio is 101.7:100 i.e. 101.7 men to 100 women (1.017).
- For male population, the largest age group is 5-9 years with a population of 372.
- For the female population, the largest age group is 50-54 years with a population of 309.

Read more about Colusa, CA population by gender ➔
Race / Ethnicity
Colusa's population has become increasingly diverse:
- Racial distribution of Colusa population: 60.61% are White, 3.07% are Black or African American, 1.13% are American Indian and Alaska Native, 1.51% are Asian, 16.92% are some other race and 16.76% are multiracial.
- Colusa's racial breakdown clearly shows that there is an absolute majority of White population in the city.
- By ethnicity, 3,694 is Hispanic or Latino (of any race), and 2,665 (41.91% of the total population) is Non-Hispanic.
- The largest racial group in Colusa is White with a population of 3,854 (60.61% of the total population).

Read more about Colusa, CA population by race ➔
Year by year
Colusa's population has already reached its peak and is showing a trend of decline:
- The peak population was 6,398 in the year 2020
- From 2000 to 2010, Colusa's population increased by 788 (14.49%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Colusa's population increased by 172 (2.76%), 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, Colusa's population was lowest in year 2000 at 5,438.

Read more about Colusa, CA population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)