Ventura County

Thousand Oaks, CA Business Index

Thousand Oaks is a city in Ventura County with an estimated 122,230 residents as of 2025, down 3.6% since 2020. Thousand Oaks' business base is indexed below across 48 owner-operated industries.

Population (2025)
122,230
U.S. Census Bureau estimate
Change since 2020
-3.6%
2020–2025
Land area
55.3 sq mi
2023 Census Gazetteer
Density
2,212/sq mi
Residents per square mile

Population trend

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

YearPopulationYear over year
2020126,810n/a
2021126,120-0.54%
2022124,677-1.14%
2023123,926-0.60%
2024123,617-0.25%
2025122,230-1.12%

Thousand Oaks holds 14.7% of Ventura County’s 830,851 residents.

Industries in Ventura County

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

HVAC & PlumbingViewElectricalViewRoofingViewLandscapingViewPest ControlViewPool ServiceViewCommercial CleaningViewFlooringViewGlass & GlazingViewSeptic & WellViewAuto RepairViewAuto BodyViewCar WashViewTowingViewTruckingViewEquipment RentalViewDentalViewVeterinaryViewHome HealthViewPharmacyViewMedical PracticeViewOptometryViewAccountingViewInsurance AgencyViewIT & MSPViewStaffingViewEngineeringViewArchitectureViewLaw FirmViewSecurity ServicesViewPrintingViewSign ShopsViewMachine ShopsViewMetal FabricationViewPlasticsViewFood ManufacturingViewMillworkViewRestaurantsViewBakeriesViewLiquor StoresViewGyms & FitnessViewSalons & SpasViewLaundromatsViewDry CleaningViewFuneral HomesViewSelf StorageViewChildcareViewPet ServicesView

Nearby cities

Other indexed places in Ventura County and the surrounding area.

Oxnard199,651Simi Valley124,861San Buenaventura (Ventura)109,914Camarillo68,652Moorpark35,023Santa Paula31,774Port Hueneme20,987Fillmore16,937Ojai7,474
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.