Major Employers

To join the list of major employers with 250 employees or more, please contact us.

Company Industry Employees
Fort Detrick Campus* Army, NCI, and other tenants 10,200
Frederick County Public Schools Public Education 6,800
Frederick Health Comprehensive Health Care 3,300
Frederick County Government County Government 2,342
Leidos Biomed / Frederick National Lab Medical Research 2,334
Frederick Community College  Two-Year College 1,286
Wells Fargo Home Mortgage Mortgage Loans and Service Center 1,175
Thermo Fisher Scientific Life Sciences Research 950
City of Frederick Government Muncipal Government 880
Costco Wholesale Wholesale Distribution Center and E-commerce Center 751
AstraZeneca BioTech Manufacturing 700
Mount Saint Mary’s University Four-Year University 684
NVR, Inc. Home Building and Mortgage Banking 630
Legal & General America Life Insurance Headquarters 586
STULZ Air Technology Systems, Inc. Manufacturer, Commercial Air Conditioners and Dehumidifiers 520
Lonza Biological Products 464
Way Station Healthcare Services 409
Goodwill of Central and Northern Arizona eCommerce, Retail, and Workforce Development 400
National Emergency Training Center  US Fire Academy, FEMA, and other tenants 400
 Plamondon Hospitality Companies Hospitality (Hotels, Restaurants, and Restaurant Management) 390
Music & Arts Music Retailer and Headquarters 396
Pleasants Construction, Inc. Construction and Paving 385
Aldi Distribution Center Distribution Center and Retail  366
YMCA of Frederick County Recreation and Sports Center 350
RR Donnelley Business Documents 350
Maryland School for the Deaf Educational Institution 320
Fountain Rock Management Corp Restaurant Management Services 315
Fitzgerald Auto Mall Frederick Auto Dealership 300
Homewood Retirement Centers Retirement Community 298
Hood College Four-Year College 274
Morgan-Keller Construction General Contractors 270

*Includes military personnel, contractors and offsite annex
Last updated 6/2021