Colusa County's estimated 2026 population is 21,656 with a growth rate of -0.82% in the past year according to the most recent United States census data. Colusa County is the 50th largest county in California. The 2010 population was 21,435 and has seen a growth of 1.03% since that time.
Data after 2023 is projected based on recent change
Overall: 35.9 years
Female: 37.2 years
Male: 35.1 years
There are 16,070 adults, (3,410 of whom are seniors) in Colusa County.
Female: 10,367 (47.2%)
Male: 11,617 (52.8%)
The racial composition of Colusa County includes 38.51% White, 34.8% other race, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 8,466 | 38.51% |
| Other race | 7,650 | 34.8% |
| Two or more races | 4,977 | 22.64% |
| Black or African American | 335 | 1.52% |
| Native American | 316 | 1.44% |
| Asian | 215 | 0.98% |
| Native Hawaiian or Pacific Islander | 25 | 0.11% |
Colusa County's average per capita income is $46,991. Household income levels show a median of $75,672. The poverty rate stands at 11.39%.
Name | Median | Mean |
|---|---|---|
| Married Families | $97,043 | - |
| Families | $86,659 | $112,729 |
| Households | $75,672 | $95,368 |
| Non Families | $33,596 | $49,076 |
Average Income
Median Household Income
Poverty Rate