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Computer and Electronic Product Manufacturing in Connecticut

NAICS 334 · CT

The register lists 303 facilities in Connecticut. The Bureau of Labor Statistics counted 310 establishments in the Computer and Electronic Product Manufacturing industry in Connecticut during 2025. Honeywell Fire Safety in Northford employed 506 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines

Biggest counties

South Central Connecticut69Capitol66Western Connecticut61Naugatuck Valley42Greater Bridgeport18Lower Connecticut River Valley13Southeastern Connecticut8Northeastern Connecticut7

Biggest cities

Plants in Connecticut47 FACILITIES

Listing 47 of 61: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityEmployeesStatus
Advanced Fusion Systems, LLCNewtown20–99 ACTIVE
Conoptics INCDanbury1–19 ACTIVE
Elidah INCNewtown— ACTIVE
Focus Medical, LLCBethel1–19 ACTIVE
Fuelcell Energy INCDanbury100–499 ACTIVE
Glacier Computer LLCNew Milford1–19 ACTIVE
Hoffman Engineering, LLCStamford20–99 ACTIVE
Imperial Electronic Assembly, INC.Brookfield100–499 ACTIVE
Kimchuk, IncorporatedDanbury20–99 ACTIVE
Mercury Scientific INC.Newtown1–19 ACTIVE
Photronics INCBrookfield100–499 ACTIVE
Sonics & Materials INCNewtown20–99 ACTIVE
Weigh & Test Systems, INC.Riverside1–19 ACTIVE
Ab Electronics LLCDanbury— ACTIVE
Biowave CorporationWestport— ACTIVE
Communication Networks, LLCDanbury— ACTIVE
Delcom Products INC.Danbury— ACTIVE
Drs Naval Power Systems INCDanbury100–499 ACTIVE
Ens Microwave, LLCDanbury— ACTIVE
Owlstone INC.Darien— ACTIVE
Vista Group International, INCDarien— ACTIVE
3dconnexion INC.Norwalk— ACTIVE
Amphenol CorporationStamford— ACTIVE
Eaton Aerospace LLCBethel100–499 ACTIVE
Hamar Laser Instruments, INC.Danbury— ACTIVE
Navigtr INCOld Greenwich— ACTIVE
Omega Engineering, INC.Norwalk— ACTIVE
Owl Cyber Defense Solutions, LLCDanbury— ACTIVE
Owl Cyber Defense Solutions, LLCDanbury— ACTIVE
Pmc-sts INCDanbury— ACTIVE
Underground Systems INCBethel— ACTIVE
Xcaliber Technologies INC.Norwalk— ACTIVE
Amphenol CorporationDanbury— LIKELY ACTIVE
Belimo U.s. INC.Danbury500+ LIKELY ACTIVE
Omega Engineering, INC.Norwalk— LIKELY ACTIVE
Amphenol Nexus Technologies, INC.Stamford20–99 LIKELY ACTIVE
Aragra - AB Electronics LLCBrookfield20–99 LIKELY ACTIVE
Norwalk Center LLCNorwalk— UNVERIFIED
Perkin Elmer Chrom DivisionNorwalk— UNVERIFIED
Twenty-five Commerce INC Dba Crystal IceNorwalk— UNVERIFIED
908 DanburyDanbury20–99 LIKELY ACTIVE
BrookfieldBrookfield100–499 LIKELY ACTIVE
Omega Engineering - CTNorwalk20–99 LIKELY ACTIVE
Parker MedicalDanbury20–99 LIKELY ACTIVE
Burndy, LLCBethel— REPORTED CLOSED
Morristown Star Struck, LLCBethel— UNVERIFIED
Siemens Healthcare DiagnosticsBrookfield— REPORTED CLOSED

Search all 303 facilities

All computer and electronic product manufacturing nationwide · All manufacturing in Connecticut