Colusa County

Williams, CA Business Index

Williams is a city in Colusa County with an estimated 5,529 residents as of 2025, down 0.3% since 2020. Williams' business base is indexed below across 48 owner-operated industries.

Population (2025)
5,529
U.S. Census Bureau estimate
Change since 2020
-0.3%
2020–2025
Land area
4.9 sq mi
2023 Census Gazetteer
Density
1,118/sq mi
Residents per square mile

Population trend

Annual resident population estimates, U.S. Census Bureau Population Estimates Program.

YearPopulationYear over year
20205,545n/a
20215,561+0.29%
20225,581+0.36%
20235,602+0.38%
20245,587-0.27%
20255,529-1.04%

Williams holds 25.3% of Colusa County’s 21,836 residents.

Industries in Colusa County

Williams businesses compete in the Colusa County market. Establishment counts, employment and payroll below are reported at county level by the U.S. Census Bureau.

HVAC & PlumbingViewElectricalView
RoofingPending
LandscapingPending
Pest ControlPending
Pool ServicePending
Commercial CleaningView
FlooringPending
Glass & GlazingPending
Septic & WellViewAuto RepairView
Auto BodyPending
Car WashPending
TowingPending
TruckingView
Equipment RentalPending
DentalView
VeterinaryPending
Home HealthPending
PharmacyViewMedical PracticeView
OptometryPending
AccountingPending
Insurance AgencyView
IT & MSPPending
StaffingPending
EngineeringPending
ArchitecturePending
Law FirmView
Security ServicesPending
PrintingPending
Sign ShopsPending
Machine ShopsPending
Metal FabricationPending
PlasticsPending
Food ManufacturingPending
MillworkPending
RestaurantsView
BakeriesPending
Liquor StoresPending
Gyms & FitnessPending
Salons & SpasPending
LaundromatsPending
Dry CleaningPending
Funeral HomesPending
Self StoragePending
ChildcareView
Pet ServicesPending

Nearby cities

Other indexed places in Colusa County and the surrounding area.

Colusa6,519Willows6,116Yuba City69,485Live Oak9,466Gridley7,258Biggs1,927Clearlake16,893Marysville12,738Oroville20,451
Data last refreshed from source on 2026-09-08.

Sources

  1. U.S. Census Bureau, Population Estimates Program (Vintage 2025). Subcounty resident population estimates. Retrieved 2026-09-08.
  2. U.S. Census Bureau, 2023 Gazetteer Files. Land area and internal point coordinates. Retrieved 2026-09-08.
  3. U.S. Census Bureau, ANSI/FIPS Place-to-County Relationship File Retrieved 2026-09-08.