Home / Capacity data / California Save Custom manufacturing capacity in California The Census Bureau's published establishment, employment and payroll counts for California across the five classes this site tracks.
More These are counts of plants, never a directory and never an endorsement; methodology at the foot of the page.
plastics product plants 551
machine shops 2,257
sheet metal shops 575
tool and die shops 125
people employed 71,293 By county plastics, largest first
Los Angeles County 16,403 Orange County 10,466 Santa Clara County 7,290 San Diego County 6,326 Alameda County 5,951 Riverside County 5,774 San Bernardino County 4,523 Ventura County 1,878 Sacramento County 1,577 Solano County 1,373 San Joaquin County 1,180 Fresno County 1,097 Classes with fewer than 30 establishments are suppressed or sparse in the published series for smaller states; treat those as context and lean on the national figures for planning.
Download the California county-level dataset (CSV) , free to reuse with citation.
Do you make parts to order? Buyer enquiries from California each naming a process, a material, a quantity and a date. You see the part before you accept it.
Get listed Sources, citation and related pages Cite or embed this figure The custom manufacturing establishments in California was 3,624 in 2022, across 3,624 manufacturing establishments recorded in the US Custom Manufacturing Capacity Index (Census County Business Patterns 2022).
Cite as: "Injection Molding Cost Checker Capacity Index: California", updated 2026-09-09, https://injectionmoldingcostchecker.com/capacity/california/.
Embed this figure (plain HTML, no scripts) Copy embed Counties in California Manufacturing capacity data for Alameda County, CA Manufacturing capacity data for Fresno County, CA Custom manufacturing in Los Angeles County, CA Custom manufacturing in Orange County, CA Custom manufacturing in Placer County, CA Custom manufacturing in Riverside County, CA Sacramento County, CA machine shops and fabricators San Bernardino County, CA machine shops and fabricators San Diego County, CA machine shops and fabricators Manufacturing capacity data for San Joaquin County, CA San Mateo County, CA machine shops and fabricators Santa Barbara County, CA machine shops and fabricators Manufacturing capacity data for Santa Clara County, CA Custom manufacturing in Sonoma County, CA Manufacturing capacity data for Stanislaus County, CA Ventura County, CA machine shops and fabricators Other states in the index Custom manufacturing in Alabama Alaska moulders, machine shops and fabricators Arizona moulders, machine shops and fabricators Custom manufacturing in Arkansas What Colorado actually makes Connecticut moulders, machine shops and fabricators What Delaware actually makes Florida moulders, machine shops and fabricators The Georgia capacity data Hawaii moulders, machine shops and fabricators Custom manufacturing in Idaho The Illinois capacity data Indiana moulders, machine shops and fabricators What Iowa actually makes Custom manufacturing in Kansas What Kentucky actually makes Custom manufacturing in Louisiana Custom manufacturing in Maine Maryland moulders, machine shops and fabricators What Massachusetts actually makes The Michigan capacity data Custom manufacturing in Minnesota What Mississippi actually makes The Missouri capacity data The Montana capacity data Nebraska moulders, machine shops and fabricators Custom manufacturing in Nevada Custom manufacturing in New Hampshire Custom manufacturing in New Jersey Custom manufacturing in New Mexico New York moulders, machine shops and fabricators North Carolina moulders, machine shops and fabricators North Dakota moulders, machine shops and fabricators The Ohio capacity data Oklahoma moulders, machine shops and fabricators Custom manufacturing in Oregon Pennsylvania moulders, machine shops and fabricators Custom manufacturing in Rhode Island What South Carolina actually makes What South Dakota actually makes Tennessee moulders, machine shops and fabricators The Texas capacity data The Utah capacity data The Vermont capacity data What Virginia actually makes Custom manufacturing in Washington Custom manufacturing in West Virginia The Wisconsin capacity data The Wyoming capacity data Source: US Census Bureau, County Business Patterns 2022 (state file, all legal forms of organisation)
Methodology: Establishment, employment and annual payroll counts for the five NAICS classes this hub's processes are counted in, read from the Census Bureau's keyless County Business Patterns state file for 2022. No NAICS class means 'injection moulding shop', so every class is labelled with its Census name and never with a process name: 326199 is All Other Plastics Product Manufacturing, the class injection moulders share with other plastics converters. Machine Shops (332710) and Sheet Metal Work Manufacturing (332322) publish for all 50 states; Special Die and Tool (333514) and Metal Stamping (332119) are suppressed in smaller states and their absence is recorded rather than filled. Payroll is Census annual payroll in thousands of dollars. This index counts CAPACITY, not vendors we have any relationship with.