Colusa County, CA Population

Overview

21,780

Total Population

35.6

Median age

48.84%

Female population %

104.7:100

Gender ratio (M:F)

10-14 years

Largest age group

58.6

Total dependency ratio

White

Largest racial group

13,177

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Colusa County is 35.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Colusa County's population under 18 was 27.25%, compared to the 22.51% nationwide.
Colusa County's elderly or the senior population (over 65 age) was 14.56% as compared to 16.04% nationwide.
Of the total population in Colusa County, 22.41% were under the age of 15, 20.34% aged 15 to 29, 42.69% aged 30 to 64, 11.66% aged 65 to 84, and 2.90% were 85 years of age and older.

There are 504 less females than males in Colusa County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.84% females and 51.16% males in Colusa County, CA.
The Colusa County, CA gender ratio is 104.7:100 i.e. 104.7 men to 100 women (1.047).
For male population, the largest age group is 5-9 years with a population of 1,049.
For the female population, the largest age group is 10-14 years with a population of 950.

Colusa County's population has become increasingly diverse:

Racial distribution of Colusa County population: 68.76% are White, 1.66% are Black or African American, 1.34% are American Indian and Alaska Native, 0.90% are Asian, 0.14% are Native Hawaiian and other Pacific Islander, 13.09% are some other race and 14.11% are multiracial.
Colusa County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 13,177 is Hispanic or Latino (of any race), and 8,603 (39.50% of the total population) is Non-Hispanic.
The largest racial group in Colusa County is White with a population of 14,975 (68.76% of the total population).

Colusa County's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 21,914 in the year 2022
From 2000 to 2010, Colusa County's population increased by 2,606 (13.84%), as compared to the national growth of 9.63%.
From 2010 to 2020, Colusa County's population increased by 423 (1.97%), 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 County's population was lowest in year 2000 at 18,829.