Top 100 companies by number of employees

Dive into the list of the top 100 in Montgomery County. Many are household names like Astrazeneca n BioHealth; Adventist and Holy Cross in healthcare; Hughes Network Systems and Lockheed Martin in the tech space; and Marriott and Choice in hospitality. See how we help these top companies grow, and assist emerging companies to move to the top.


Community Services For Autistic Adults & Children

The Emmes Corporation


Retail Services & Systems Inc.

GlaxoSmithKline LLC

Systems Research & Application Corp.

United Parcel Service Company

Community Support Services Inc.

KFHP Mid Atlantic States Inc.

Meso Scale Diagnostics LLC

ABT Associates Inc.

Choice Hotels International

Nordstrom Inc.

Clark Construction Group LLC

Ruppert Landscape, Inc.

Compass, Inc.

Universal Protection Service


HMSHost Corporation

Sobran Inc.

IntegraMed America

Canyon Grill Enterprises LLC

Capital Health Care Associates Inc.

Eagle Environmental Services Inc.

ActioNet Inc.

Zenimax Media Inc.

Corixa Corporation

Comcast Cablevision Corporation

Gali Service Industries Inc.

CohnReznick LLP

Wegmans Food Markets Inc.

Cornerstone Montgomery

Capital Home Care Inc.


Adventist HealthCare

Marriott International

Holy Cross Hospital

AstraZeneca Pharmaceuticals LP



Kaiser Foundation


Lockheed Martin Corporation

Westat Research Inc.

Henry M. Jackson Foundation

Suburban Hospital Association Inc.

Red Coats Inc.

Hughes Network Systems LLC

Rider Wood Village Inc.

Whole Foods Market

Financial Industry Regulator

Booz Allen Hamilton Inc.

Home Depot USA Inc.

Montgomery General Hospital Inc

IBM Corporation

Hebrew Home of Greater Washington

Mariam Inc.

Sodexo Operations LLC

US Pharmacopeial Convention

Children’s National Medical Center

First Transit Inc.

Walmart Associates Inc.

Element Fleet Corporation

Affiliated Associates Inc.

ScribeAmerica LLC

Costco Wholesale Corporation

Medical Science & Computing

Pioneer Building Services Inc.


WeddingWire Inc.

Boston Consulting Group Inc.

BRLI No. 2 Acquisition Corporation

JBGS Employee Company LLC

James G Davis Construction Corporation

Qiagen Sciences LLC

Capital Vision Services LLC

Macy’s Retail Holdings Inc.

Family & Nursing Care Select

Concrete General Inc.

Congressional Country Club Inc.

Nandos Chickenland Group

Lash Group LLC

Montgomery Hospice Inc.

Client Network Services Inc.

Common Securitization Solutions

National Lutheran Home for the Aged Inc.

Medical Faculty Associates Inc.

Chevy Chase Club Inc.

BAE Systems LLC

Cystic Fibrosis Foundation

Microsoft Corporation

Ivymount School Inc.

Securitas Security Services

MacroGenics Inc.

Ace Maintenance & Service Inc.

Digital Management LLC

Howard Hughes Medical Institute

American Speech Language

Boland Trane Services Inc.

Macro International Inc.

Source: Quarterly Census of Employment and Wages, Q1 2018