These Are The 100 Largest Companies In Maryland

Chris Kolmar
by Chris Kolmar
Biggest Companies, Rankings - 10 months ago
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If you live in Maryland and you’re looking for a job, you have come to the right place.

Because, sure, you can google things like ‘biggest companies in Maryland’ and get a fairly long list of companies with a lot of employees, or perhaps that have the biggest names — but here, we bring you the companies with the most current employees that are actually headquartered in Maryland.

Below, we’ll give you a complete list of Maryland’s 100 largest companies, but first, here’s a look at the top 10:

  1. Marriott International
  2. Lockheed Martin
  3. Social Security Administration
  4. Laureate International Universities
  5. MedStar Health
  6. HMSHost
  7. Johns Hopkins Medicine
  8. Servisair
  9. Perdue Farms
  10. National Institutes of Health

Marriott International comes in at the top, with more current employees than any other company in the . We’ll get to specifics in a moment; first, here’s a look at our methodology.

How we identified the biggest companies in Maryland

Here at Zippia we have developed a database of over 250,000 companies that spans the entire country.

For this report, we looked at the companies headquartered in Maryland with at least 100 employees. That left us with 706 companies.

We then ranked each company from most to least current employees to determine the biggest companies in Maryland.

As it turns out, Marriott International looks to the be the biggest company in Maryland clocking in with 226,500 employees.

Now, check out how the 100 biggest companies in Maryland ranked.

If you’re interested, you can read more about the Maryland job scene here:

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Detailed List Of The 100 Biggest Companies In Maryland

Rank Company City Employees
1 Marriott International Bethesda 226,500
2 Lockheed Martin Bethesda 97,000
3 Social Security Administration Baltimore 65,000
4 Laureate International Universities Baltimore 54,500
5 MedStar Health Columbia 28,060
6 HMSHost Bethesda 27,900
7 Johns Hopkins Medicine Baltimore 26,430
8 Servisair Silver Spring 22,000
9 Perdue Farms Salisbury 21,050
10 National Institutes of Health Bethesda 20,260
11 University System of Maryland Adelphi 20,000
12 Colfax Annapolis 16,000
13 Johns Hopkins University Baltimore 12,240
14 T. Rowe Price Baltimore 11,720
15 Rohde & Schwarz Columbia 10,500
16 GEICO Bethesda 10,000
17 Mayor Catherine Pugh Baltimore 10,000
18 Sinclair Broadcast Group Cockeysville 8,400
19 Towne Park Annapolis 8,053
20 Piedmont Airlines Salisbury 7,000
21 Discovery Silver Spring 7,000
22 LifeBridge Health Baltimore 6,935
23 U.S. Census Bureau Silver Hill 6,880
24 State of Maryland Crownsville 6,720
25 Jos. A. Bank Clothiers Hampstead 5,622
26 Baltimore Schools Baltimore 5,500
27 Red Coats Bethesda 5,252
28 Algeco Scotsman Group Baltimore 5,100
29 Nexion Health Sykesville 5,000
30 Abacus Baltimore 5,000
31 Adventist HealthCare Gaithersburg 5,000
32 DeWalt Towson 5,000
33 Indian Health Service Rockville 4,910
34 SodexoMAGIC Gaithersburg 4,890
35 JHU Applied Physics Laboratory Laurel 4,800
36 Montgomery County Government Rockville 4,640
37 Westat Rockville 4,583
38 Sinai Hospital Of Baltimore Baltimore 4,497
39 Maxim Healthcare Services Columbia 4,150
40 GBMC – Greater Baltimore Medical Center Towson 3,998
41 Towson University Towson 3,860
42 W.R. Grace Columbia 3,700
43 Merkle Group Inc Columbia 3,700
44 Furuno Denton 3,500
45 Sunburst Hospitality Silver Spring 3,500
46 GP Strategies Columbia 3,378
47 Peninsula Regional Medical Center Salisbury 3,300
48 ASRC Federal Laurel 3,281
49 Davco Acquisition Holding Inc Crofton 3,280
50 Harford County Public Schools Bel Air 3,250
51 Cision Beltsville 3,130
52 Meritus Health Inc Hagerstown 3,105
53 The Shelter Group Baltimore 3,100
54 Hcf Baltimore 3,100
55 Legg Mason Baltimore 3,070
56 The Whiting-Turner Contracting Company Baltimore 3,008
57 Montgomery General Hospital Olney 3,000
58 Clark Construction Group Bethesda 3,000
59 e4e Towson 3,000
60 Prince George’s Community College Largo 3,000
61 Prince George’s Hospital Center Cheverly 3,000
62 DOCTORS COMMUNITY HOSPITAL Lanham 3,000
63 Acacia Life Insurance Co Bethesda 3,000
64 USU Health Sciences Bethesda 3,000
65 Darrell Barrett and Renaissance Salon and Spa Cockeysville 3,000
66 UNIV OF MARYLAND COLLEGE PARK College Park 3,000
67 ACS Government Solutions Inc Rockville 3,000
68 Sleep Services Of America Inc Glen Burnie 3,000
69 Ca Holding I Inc Baltimore 2,820
70 University of Maryland Medical Center Baltimore 2,800
71 Dimensions Healthcare System Cheverly 2,650
72 Synutra International Rockville 2,600
73 Frederick Memorial Hospital Frederick 2,600
74 Chimes Baltimore 2,579
75 Sheppard Pratt Health System Towson 2,555
76 Mid-Atlantic Health Care LLC Timonium 2,520
77 Saint Agnes Hospital Baltimore 2,506
78 Kennedy Krieger Institute Baltimore 2,500
79 Commissioned Corps of the U.S. Public Health Service Rockville 2,500
80 Match Converge Elkridge 2,500
81 MedImmune Gaithersburg 2,359
82 U.S. Nuclear Regulatory Commission Rockville 2,350
83 Western Maryland Health System Cumberland 2,300
84 SGT Greenbelt 2,300
85 Hughes Germantown 2,254
86 Inovalon Bowie 2,181
87 Chindex Bethesda 2,134
88 Wheelabrator Baltimore 2,100
89 Real Hospitality Group Ocean City 2,100
90 Anne Arundel Medical Center Annapolis 2,100
91 Prometric Baltimore 2,077
92 Morgan State University Baltimore 2,050
93 The Baltimore Sun Company Baltimore 2,017
94 InfosysPublicService Rockville 2,000
95 Catholic Charities of Baltimore Baltimore 2,000
96 WTS International Rockville 2,000
97 Carroll County Public Schools Westminster 2,000
98 Choice Hotels Rockville 1,987
99 Howard County General Hospital Columbia 1,951
100 Williams Scotsman Baltimore 1,947

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