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Public record · Illinois

Winnebago County: 348 companies on record.

The companies the public registers place in Winnebago County, Illinois, by sector, as DealSTE read them — read 9 Nov 2026. Each opens on its own record page: registration, sites, permits, liens and compliance, each with its register.

By sector
SectorCompanies
Manufacturing160
Auto services — repair, collision, tire77
Defense and federal contracting44
Healthcare — medical, dental & home health11
Distribution & wholesale10
Funeral homes10
Professional services — accounting, engineering, insurance6
Crushed stone5
Sand and gravel5
Trades — HVAC, plumbing, electrical, mechanical5
Home construction & remodeling4
Waste hauling, roll-off & recycling4
Retail — specialty, convenience & liquor3
Trucking2
Commercial & specialty contracting1
Restaurants1
The companies — the first 50 of 348, as the map lists them
CompanySectorCity
SLE Holdings Rockford DBA: Sub SourceManufacturingRockford
IMA Automation USA, IncManufacturingLoves Park
Regal RexnordManufacturingSouth Beloit
Rockford Process ControlManufacturingRockford
Rockford Spring CompanyManufacturingRockford
Stateline FoundriesManufacturingRoscoe
Cincinnati Tool Steel CompanyManufacturingRockford
Top Die Casting CoManufacturingSouth Beloit
American Aluminum Extrusion Company, LLCManufacturingRoscoe
AVS Holdings Inc DBA Interstate GraphicsManufacturingMachesney Park
ImiManufacturingMachesney Park
Ingersoll Machine Tools Inc.ManufacturingRockford
Regal Cutting Tools, IncManufacturingRoscoe
Absolute Grinding & Manufacturing, Inc.ManufacturingRockford
EstwingManufacturingRockford
Modern Advanced ManufacturingManufacturingRockford
Vero Biotech - Vero WestManufacturingLoves Park
Adapt Plastics, Inc.Defense & federal contractingLoves Park
Aircraft Gear CorporationManufacturingLoves Park
Reg-Ellen Machine Tool CorporationManufacturingRockford
Brynolf Manufacturing, Inc.ManufacturingRockford
Accurate Metals IllinoisManufacturingRockford
American Extrusion InternationalManufacturingSouth Beloit
Bourn & Koch LLCManufacturingRockford
Bourn & Koch, Inc.Defense & federal contractingRockford
CC IndustriesManufacturingRockford
Cellusuede Products, IncManufacturingRockford
DanfossManufacturingLoves Park
Diamond Heat TreatManufacturingRockford
Diamond Heat Treat, LLCManufacturingRockford
Elite Fasteners IncManufacturingRockford
Ever Ready Grinding & Pin MFG LLCManufacturingRockford
Ever Ready Pin & Manufacturing, Inc.ManufacturingRockford
Fisher Barton, Inc.ManufacturingLoves Park
Greenberg Casework Co IncManufacturingSouth Beloit
GWS Tool GroupManufacturingSouth Beloit
HMC Products, IncManufacturingCaledonia
Ingenium Aerospace LLCManufacturingRockford
LJ FabricatorsManufacturingRockford
NafcoManufacturingLoves Park
Olson Aluminum CastingsManufacturingRockford
Plastic Parts International, Inc.ManufacturingLoves Park
Quantum Design Inc.ManufacturingCaledonia
Rockford Ball ScrewManufacturingRockford
Rockford Manufacturing Group IncManufacturingSouth Beloit
Rockford Molded Products, Inc.ManufacturingLoves Park
Rockford Silk Screen Process, Inc.ManufacturingLoves Park
Rockford Specialties CompanyManufacturingLoves Park
Roper WhiitneyManufacturingRockford
Saws International, Inc.ManufacturingMachesney Park

Every company in the county, with its filings and the people behind it, is read inside DealSTE. Request access.

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