Electronics manufacturers in Connecticut
Connecticut has 88 electronics makers in EPA records, facilities that list codes for computers, communications gear, components and instruments. The most are in Wallingford, Danbury and Milford. That is 1% of the 6,529 such facilities nationwide, and Connecticut ranks #17 of 49 states.
- Product
- Electronics manufacturers
- Facilities
- 88
- State rank
- #17
- NAICS
- 334111 and 21 related codes
- Revised
- November 1, 2026
Facilities in Connecticut
These are active facilities in EPA's ECHO database that list a code for computers, communications gear, components and instruments. The 40 shown first are the ones with the most EPA program records, which usually means the larger sites.
| Facility | City | What EPA lists |
|---|---|---|
| Ashcroft, Inc. | Stratford | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Microtech Inc | Cheshire | Other Electronic Component Manufacturing |
| Northeast Electronics Corp | Milford | Electronic Connector Manufacturing |
| Ttm Printed Circuit Group, LLC | Stafford | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Birk Manufacturing, Inc. | East Lyme | Other Electronic Component Manufacturing |
| Ttm Printed Circuit Group, Inc. | Stafford Springs | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Pmp Corporation | Avon | Totalizing Fluid Meter and Counting Device Manufacturing |
| Smiths Aerospace Components | Manchester | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing |
| Ebl Products, Inc. | East Hartford | Other Electronic Component Manufacturing |
| Zygo Corporation | Middlefield | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Poquonock Water Pollution Control Facility | Windsor | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing |
| Tech Circuits Inc | Wallingford | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Cirtec Medical Corp | Enfield | Electromedical and Electrotherapeutic Apparatus Manufacturing |
| Fuelcell Energy | Danbury | Semiconductor and Related Device Manufacturing |
| Gems Sensors & Controls | Plainville | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Haydon Kerk Motion Solutions Inc | Waterbury | Other Electronic Component Manufacturing |
| Lee Company, The | Westbrook | Automatic Environmental Control Manufacturing |
| Perkin Elmer Health Sciences | Shelton | Analytical Laboratory Instrument Manufacturing |
| Ttm Technologies | Stafford | Printed Circuit Assembly (Electronic Assembly) Manufacturing |
| Winchester Electronics | Watertown | Electronic Connector Manufacturing |
| ABB Business Services, Inc | Windsor | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Alloy Engineering Company, Inc. | Bridgeport | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Altek Electronics | Torrington | Printed Circuit Assembly (Electronic Assembly) Manufacturing |
| Amphenol Rf | Danbury | Electronic Connector Manufacturing |
| Atlantic Inertial Systems | Cheshire | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing |
| Bead Industries Inc | Milford | Electronic Connector Manufacturing |
| Beaver Brook Circuits | Bethel | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Belimo Aircontrols | Danbury | Automatic Environmental Control Manufacturing |
| Bellimo Air Controls (USA), Inc. | Danbury | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Bicron Electronics, LLC | Torrington | Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing |
| Bristol Babcock Inc., Div Of Emerson | Watertown | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Burndy Corp | Waterbury | Electronic Connector Manufacturing |
| Cablevision Of Connecticut | Norwalk | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Canberra Industries, Inc. | Meriden | Other Measuring and Controlling Device Manufacturing |
| Cidra Corporate Services, Inc. | Wallingford | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Circon Acmi | Stamford | Electromedical and Electrotherapeutic Apparatus Manufacturing |
| Circuit-Wise, Inc. | North Haven | Bare Printed Circuit Board Manufacturing |
| Cooper Instrument Corporation | Middlefield | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| Corometrics Facility | Wallingford | Electromedical and Electrotherapeutic Apparatus Manufacturing |
| Devar, Inc | Bridgeport | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
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
- Wallingford: 7
- Danbury: 7
- Milford: 6
- Manchester: 4
- Waterbury: 4
- Norwalk: 4
By product code
- Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (NAICS 334513): 9 of those shown
- Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing (NAICS 334220): 6 of those shown
- Electronic Connector Manufacturing (NAICS 334417): 5 of those shown
- Other Electronic Component Manufacturing (NAICS 334419): 4 of those shown
- Electromedical and Electrotherapeutic Apparatus Manufacturing (NAICS 334510): 3 of those shown
- Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (NAICS 334511): 3 of those shown
- Printed Circuit Assembly (Electronic Assembly) Manufacturing (NAICS 334418): 2 of those shown
- Automatic Environmental Control Manufacturing (NAICS 334512): 2 of those shown
- Bare Printed Circuit Board Manufacturing (NAICS 334412): 1 of those shown
- Semiconductor and Related Device Manufacturing (NAICS 334413): 1 of those shown
- Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (NAICS 334416): 1 of those shown
- Totalizing Fluid Meter and Counting Device Manufacturing (NAICS 334514): 1 of those shown
- Analytical Laboratory Instrument Manufacturing (NAICS 334516): 1 of those shown
- Other Measuring and Controlling Device Manufacturing (NAICS 334519): 1 of those shown
All computers and electronics manufacturing in Connecticut: 84 facilities and Census job counts.