Major employers provide a snapshot of the industries and institutions driving Washtenaw County’s economy. The following list highlights some of the county’s largest public and private employers, based on the most recent employment data available to Ann Arbor SPARK.

Updated September 2026

Company NameCityType of Organization# of Employees*
University of MichiganAnn ArborPublic university and academic health system37,400 – 37,499
Trinity Health Michigan (multiple locations)Ypsilanti / Saline / ChelseaHealth care system5,500 – 5,599
Ann Arbor Public SchoolsAnn ArborPublic school district2,700 – 2,799
VA Ann Arbor Healthcare SystemAnn ArborHealth care system2,700 – 2,799
IHA Health Services Corp.Ann ArborMulti-specialty physician group1,600 – 1,699
Washtenaw County GovernmentAnn ArborCounty government1,300 – 1,399
Eastern Michigan UniversityYpsilantiPublic university1,300 – 1,399
Toyota Motor North America Research and Development (2 locations)Ann Arbor / SalineAutomotive R&D1,200 – 1,299
Domino’sAnn ArborCorporate headquarters1,200 – 1,299
RealTruckAnn ArborAutomotive aftermarket products900 – 999
Zingerman’s Family of BusinessesAnn ArborFood and hospitality800 – 899
City of Ann ArborAnn ArborCity government700 – 799
ForviaSalineAutomotive component manufacturer700 – 799
KLA CorporationAnn ArborSemiconductor equipment R&D600 – 699
Thomson ReutersAnn ArborInformation services and software600 – 699
Ford Rawsonville Components PlantYpsilantiAutomotive component manufacturer600 – 699
Ypsilanti Community SchoolsYpsilantiPublic school district600 – 699
Washtenaw Community CollegeAnn ArborCommunity college500 – 599
JAC Products Inc.SalineAutomotive component manufacturer500 – 599
Martinrea Bishop Circle AssemblyManchesterAutomotive component manufacturer400 – 499
Stellantis – Chelsea Proving GroundsChelseaAutomotive R&D and testing400 – 499
GoogleAnn ArborTechnology / digital advertising400 – 499
National Vehicle and Fuel Emissions LaboratoryAnn ArborFederal research and testing laboratory400 – 499
NTT DataAnn ArborIT services and consulting400 – 499
Duo SecurityAnn ArborCybersecurity400 – 499
HistoSonicsAnn ArborMedical device / non-invasive tumor therapy400 – 499
Hatch StampingChelseaAutomotive component manufacturing300 – 399
Sheridan BooksChelseaBook printing and binding300 – 399
Terumo Cardiovascular GroupAnn ArborMedical device manufacturing300 – 399
Chelsea Milling CompanyChelseaFood manufacturing300 – 399
Amcor Rigid PlasticsManchesterPlastic packaging manufacturing300 – 399
Liebherr-AerospaceSalineAerospace component repair and services300 – 399
ClarivateAnn ArborResearch information and analytics300 – 399
Cayman Chemical CompanyAnn ArborLife sciences / biochemical products300 – 399
NSK AmericasAnn ArborAutomotive and industrial components300 – 399
NSF InternationalAnn ArborPublic health standards, testing and certification300 – 399
Hyundai America Technical Center, Inc. (HATCI)Superior TownshipAutomotive R&D300 – 399
Dexter Fastener TechnologiesDexterAutomotive fastener manufacturing200 – 299
GestampChelseaAutomotive component manufacturing200 – 299
Pollard BanknoteYpsilantiLottery products and services200 – 299
XPOAnn ArborTransportation and logistics200 – 299
Black & Veatch Corp.Ann ArborEngineering and consulting200 – 299
Wacker ChemicalAnn ArborSpecialty chemicals and biotechnology R&D200 – 299
MMI Engineered SolutionsSalinePlastic injection molding200 – 299
Altarum InstituteAnn ArborNonprofit health research and consulting200 – 299
Sartorius AGAnn ArborLife sciences / bioanalytics200 – 299
Emerald TechnologiesSalineElectronics manufacturing200 – 299
Washtenaw ISDAnn ArborIntermediate school district200 – 299
Production Services ManagementSalineIndustrial supply chain management200 – 299
MedtronicDexterMedical device manufacturing200 – 299
MerativeAnn ArborHealth care data and analytics200 – 299
Barracuda NetworksAnn ArborCybersecurity200 – 299
SkySpecsAnn ArborDrone technology / wind energy services200 – 299

*Employment ranges reflect the most recent data available to Ann Arbor SPARK for employers with 200 or more employees.

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