Semiconductor manufacturers in California
California has 657 semiconductor makers in EPA records, facilities that list codes for semiconductors and related devices. The most are in San Jose, Santa Clara and Fremont. That is 53% of the 1,248 such facilities nationwide, and California ranks first of 41 states.
- Product
- Semiconductor manufacturers
- Facilities
- 657
- State rank
- #1
- NAICS
- 334413
- Revised
- November 1, 2026
Facilities in California
These are active facilities in EPA's ECHO database that list a code for semiconductors and related devices. The 40 shown first are the ones with the most EPA program records, which usually means the larger sites.
| Facility | City | What EPA lists |
|---|---|---|
| Formfactor Inc | Livermore | Semiconductor and Related Device Manufacturing |
| Infinera Corp | Sunnyvale | Semiconductor and Related Device Manufacturing |
| Teledyne Imaging Sensors | Camarillo | Semiconductor and Related Device Manufacturing |
| Westak | Sunnyvale | Semiconductor and Related Device Manufacturing |
| Form Factor | Livermore | Semiconductor and Related Device Manufacturing |
| GE Industrial Sensing | Fremont | Semiconductor and Related Device Manufacturing |
| Global Communication Semiconductors, Inc | Torrance | Semiconductor and Related Device Manufacturing |
| Tower Semiconductor | Newport Beach | Semiconductor and Related Device Manufacturing |
| Coherent Inc | Sunnyvale | Semiconductor and Related Device Manufacturing |
| Eotech | Santa Clara | Semiconductor and Related Device Manufacturing |
| Formfactor, Inc. | Carlsbad | Semiconductor and Related Device Manufacturing |
| Hiefo Corporation | Alhambra | Semiconductor and Related Device Manufacturing |
| Intel Corp. Sc1/2 | Santa Clara | Semiconductor and Related Device Manufacturing |
| Intel Corporation | Folsom | Semiconductor and Related Device Manufacturing |
| Robert Bosch Semiconductor LLC | Roseville | Semiconductor and Related Device Manufacturing |
| Skyworks Solutions | Newbury Park | Semiconductor and Related Device Manufacturing |
| Swift Metal Finishing | Santa Clara | Semiconductor and Related Device Manufacturing |
| 10x Genomics | Pleasanton | Semiconductor and Related Device Manufacturing |
| Applied Thin-Film Products | Fremont | Semiconductor and Related Device Manufacturing |
| Bay Area Circuits | Fremont | Semiconductor and Related Device Manufacturing |
| Bruker Nano Inc | Camarillo | Semiconductor and Related Device Manufacturing |
| Caelux | Baldwin Park | Semiconductor and Related Device Manufacturing |
| Eclectic Art Designs | Ventura | Semiconductor and Related Device Manufacturing |
| Enervault Corporation | Sunnyvale | Semiconductor and Related Device Manufacturing |
| Finisar Corporation | Fremont | Semiconductor and Related Device Manufacturing |
| First Solar Inc | Santa Clara | Semiconductor and Related Device Manufacturing |
| Google LLC | Fremont | Semiconductor and Related Device Manufacturing |
| Infineon Technologies Americas Corp | Temecula | Semiconductor and Related Device Manufacturing |
| Innovative Micro Technology | Goleta | Semiconductor and Related Device Manufacturing |
| Lam Research Corporation | Fremont | Semiconductor and Related Device Manufacturing |
| Lockheed Martin Missiles And Fire Control | Goleta | Semiconductor and Related Device Manufacturing |
| Micrel Synergy Semiconductor | Santa Clara | Semiconductor and Related Device Manufacturing |
| Pac Tech USA - Packaging Technologies | Santa Clara | Semiconductor and Related Device Manufacturing |
| Sld Laser | Fremont | Semiconductor and Related Device Manufacturing |
| Spectra Inc | Santa Clara | Semiconductor and Related Device Manufacturing |
| Teledyne E2v | Milpitas | Semiconductor and Related Device Manufacturing |
| Touchdown Technologies Inc. | Baldwin Park | Semiconductor and Related Device Manufacturing |
| Voltage Multipliers Inc | Visalia | Semiconductor and Related Device Manufacturing |
| Advantest America Inc | San Jose | Semiconductor and Related Device Manufacturing |
| Agilent Technologies, Inc. | Santa Rosa | Semiconductor and Related Device Manufacturing |
Industry codes are reported by facilities to EPA programs and are not checked here. A few listings may be repair shops, distributors or recyclers. How these records work.
Where they are
- San Jose: 103
- Santa Clara: 75
- Fremont: 59
- Sunnyvale: 43
- Milpitas: 40
- San Diego: 27
All computers and electronics manufacturing in California: 3,150 facilities and Census job counts.