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Colusa County, CA
9 cities and towns and 7 ZIP codes in Colusa County, California.
Population
21,984
Land area
1,151sq mi
People per sq mi
19
ZIP codes
7
Cities and towns in Colusa County
Colusa County at a glance
- Colusa County is 92% less dense than California as a whole.
- The median household income is $75,672, 24% below the California median of $99,122.
- A typical owner-occupied home is valued at $393,400 (46% below California) and median rent is $1,157 a month.
- Its largest cities are Colusa (6,505), Williams (5,585) and Arbuckle (3,093).
Local data for Colusa County, CA
Counts from official public data
Housing and community stats
Colusa County, CA, American Community Survey 2020-2024
Median household income
$75,672
Poverty rate
11.4%
Median home value
$393,400
Prices +1.7% in a year
Median rent
$1,157/mo
Homeownership
62.2%
Bachelor's or higher
16.4%
Median age
35.9
Average commute
24.2 min
Largest reported origins and ancestries: Mexican Americans (13,295), German Americans (1,621), Irish Americans (1,143).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
8.6%
Sep 2026, 0.0 pts in a year
Average annual pay
$61,616
9,472 jobs, 2025
Income per person
$61,656
BEA, 2024
Federal spending
$143M
FY 2026, $6,569 per person
PPP loans
$67.9M
483 loans, 7,686 jobs reported
Campaign donations
$192K
Itemized, 2026 cycle
How people get to work
Colusa County, CA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone82.1%
- Carpooled10.1%
- Public transit0.8%
- Walked0.7%
- Bicycle0.2%
- Taxi, ride-hailing, motorcycle or other0.8%
- Worked from home5.3%
Average one-way commute: 24.2 minutes for people who do not work from home.
Environment and hazard risk
Colusa County, CA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: drought
Storm events since 1996
34
Most often flood
Flood insurance policies
474
6.9% of homes, county
July high / Jan low
92° / 38°F
17.2 inches of rain a year
Hazards, floods and storm historyCheck a flood zone5 historic places
Health statistics
Share of adults in Colusa County, CA, CDC PLACES estimates
Obesity
35.0%
U.S. 33.3% +1.7 pts
Diabetes
13.4%
U.S. 12.1% +1.3 pts
Smoking
13.4%
U.S. 12.8% +0.6 pts
Uninsured (18-64)
17.6%
U.S. 11.1% +6.5 pts
Cities, towns and ZIP codes in Colusa County
Population shown
Frequently asked questions
- What is the largest city in Colusa County, CA?
- Colusa is the largest city or town in Colusa County, with about 6,505 residents.
- How many ZIP codes are in Colusa County?
- Colusa County includes 7 ZIP Code Tabulation Areas, including 95912, 95932, 95950, 95955, 95970.
- What is the population of Colusa County, CA?
- About 21,984 people live in Colusa County, based on American Community Survey 5-year estimates.
- What counties border Colusa County?
- Colusa County borders Yolo County, Butte County, Sutter County, Lake County, Glenn County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023