These Are The 100 Largest Companies In Maryland

Chris Kolmar
by Chris Kolmar
Biggest Companies, Rankings - 6 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 headquarted 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. Johns Hopkins Medicine
  6. MedStar Health
  7. HMSHost
  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 726 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 Johns Hopkins Medicine Baltimore 29,170
6 MedStar Health Columbia 28,060
7 HMSHost Bethesda 27,900
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 The Ritz-Carlton Company Chevy Chase 13,390
14 Johns Hopkins University Baltimore 12,240
15 Caleres Clayton 12,000
16 T. Rowe Price Baltimore 11,720
17 U.S Department of Education Washington 11,000
18 Under Armour Inc 10,850
19 Rohde & Schwarz Columbia 10,500
20 GEICO Bethesda 10,000
21 Sinclair Broadcast Group Cockeysville 8,400
22 Towne Park Annapolis 8,053
23 Kirkland’s Brentwood 7,900
24 Piedmont Airlines Salisbury 7,000
25 Discovery Silver Spring 7,000
26 LifeBridge Health Baltimore 6,935
27 MICROS Systems Inc 6,809
28 U.S. Census Bureau Silver Hill 6,530
29 Maryland.gov Crownsville 6,500
30 Adventist HealthCare Gaithersburg 6,200
31 Jos. A. Bank Clothiers Hampstead 5,622
32 Baltimore Schools Baltimore 5,500
33 Red Coats Bethesda 5,252
34 Algeco Scotsman Group Baltimore 5,100
35 Abacus Baltimore 5,000
36 Nexion Health Sykesville 5,000
37 DeWalt Towson 5,000
38 SodexoMAGIC Gaithersburg 4,890
39 Indian Health Service Rockville 4,587
40 Westat Rockville 4,583
41 Montgomery County Government Rockville 4,570
42 Sinai Hospital of Baltimore, Inc. Baltimore 4,497
43 The Johns Hopkins Applied Physics Laboratory Laurel 4,490
44 Maxim Healthcare Services Columbia 4,150
45 GBMC – Greater Baltimore Medical Center Towson 3,998
46 Anne Arundel Medical Center Annapolis 3,900
47 W.R. Grace Columbia 3,700
48 Merkle Group Inc Columbia 3,700
49 Furuno Denton 3,500
50 Sunburst Hospitality Silver Spring 3,500
51 GP Strategies Columbia 3,378
52 Peninsula Regional Medical Center Salisbury 3,300
53 ASRC Federal Laurel 3,281
54 Davco Acquisition Holding, Inc. Crofton 3,280
55 Harford County Public Schools Bel Air 3,250
56 Cision Beltsville 3,130
57 Hcf Baltimore 3,100
58 The Shelter Group Baltimore 3,100
59 Legg Mason Baltimore 3,070
60 The Whiting-Turner Contracting Company Baltimore 3,008
61 Sleep Services of America, Inc. Glen Burnie 3,000
62 ACS Government Solutions Group Inc Rockville 3,000
63 Prince George’s Community College Upper Marlboro 3,000
64 Prince George’s Hospital Center Cheverly 3,000
65 Clark Construction Group Bethesda 3,000
66 University Of Maryland College Park College Park 3,000
67 e4e Towson 3,000
68 The Doctors Community Hospital Lanham 3,000
69 Acacia Life Insurance Company Bethesda 3,000
70 Darrell Barrett and Renaissance Salon and Spa Huntingtown 3,000
71 Montgomery General Hospital Foundation Inc Olney 3,000
72 Ca Holding I, Inc Baltimore 2,820
73 University of Maryland Medical Center Baltimore 2,800
74 Dimensions Healthcare System Cheverly 2,650
75 Synutra International Rockville 2,600
76 Chimes Baltimore 2,579
77 Sheppard Pratt Health System Towson 2,555
78 Mid-Atlantic Health Care LLC Timonium 2,520
79 Saint Agnes Health Baltimore 2,506
80 Rockline Industries Sheboygan 2,500
81 Sunrise Hospital Las Vegas 2,500
82 Match Converge Elkridge 2,500
83 Kennedy Krieger Institute Baltimore 2,500
84 Commissioned Corps of the U.S. Public Health Service Rockville 2,500
85 MedImmune Gaithersburg 2,359
86 U.S. Nuclear Regulatory Commission Rockville 2,350
87 SGT Greenbelt 2,300
88 Western Maryland Health System Cumberland 2,300
89 Hughes Germantown 2,254
90 Inovalon Bowie 2,181
91 Chindex Bethesda 2,134
92 Wheelabrator Baltimore 2,100
93 Real Hospitality Group Ocean City 2,100
94 Prometric Baltimore 2,077
95 Morgan State University Baltimore 2,050
96 The Baltimore Sun Company Baltimore 2,017
97 American Retail Group, Inc. Las Vegas 2,014
98 Carroll County Public Schools Westminster 2,000
99 Catholic Charities of Baltimore Baltimore 2,000
100 InfosysPublicService Rockville 2,000

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