The 100 Largest Companies In Maryland For 2020

Chris Kolmar
by Chris Kolmar
Biggest Companies, Rankings - 4 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.

What’s The Largest Company In Maryland?

Marriott International is the largest company headquartered in Maryland based on our database of 10 million resumes. It has 176,000 employees. See the full table or the methodology below.

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 Education
  5. The Ritz-Carlton Hotel
  6. MedStar Health
  7. HMSHost
  8. University System of Maryland
  9. Johns Hopkins Medicine
  10. Perdue Farms

Marriott International comes in at the top, with more current employees than any other company in the state. 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 734 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 176,000 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:

Detailed List Of The 100 Biggest Companies In Maryland

Rank Company City Employees
1 Marriott International Bethesda 176,000
2 Lockheed Martin Bethesda 105,000
3 Social Security Administration Baltimore 60,000
4 Laureate Education Baltimore 54,500
5 The Ritz-Carlton Hotel Chevy Chase 40,000
6 MedStar Health Columbia 28,061
7 HMSHost Bethesda 27,900
8 University System of Maryland Hyattsville 21,565
9 Johns Hopkins Medicine Baltimore 21,080
10 Perdue Farms Salisbury 21,000
11 National Institutes of Health Bethesda 20,260
12 Potomac High School Upper Marlboro 19,000
13 Laboratory For Physical Sci College Park 17,080
14 Baltimore County Public Schools Towson 17,055
15 Food and Drug Administration Silver Spring 14,820
16 Colfax Annapolis 14,300
17 Johns Hopkins University Baltimore 12,130
18 Vie de France Oxon Hill 12,000
19 McCormick & Company Baltimore 11,700
20 Under Armour Baltimore 10,850
21 OneMain Baltimore 10,100
22 GEICO Bethesda 10,000
23 Indian Health Service Rockville 10,000
24 Baltimore City Hall Baltimore 10,000
25 HCPSS Ellicott City 8,435
26 Sinclair Broadcast Group Cockeysville 8,400
27 Goodwill Industries Rockville 8,120
28 T. Rowe Price Baltimore 7,022
29 Total Wine & More Bethesda 7,000
30 LifeBridge Health Baltimore 7,000
31 Discovery Silver Spring 7,000
32 Piedmont Airlines Salisbury 7,000
33 State of Maryland Baltimore 6,910
34 Baltimore Schools Baltimore 5,750
35 Anne Arundel County Public Schools Annapolis 5,500
36 Red Coats Bethesda 5,252
37 Nexion Health Sykesville 5,000
38 Abacus Baltimore 5,000
39 Micros Systems Columbia 4,953
40 SodexoMAGIC Gaithersburg 4,890
41 Montgomery County Government Rockville 4,750
42 Towson University Towson 4,650
43 Sinai Hospital of Baltimore Baltimore 4,497
44 Clark Construction Group Bethesda 4,200
45 Maxim Healthcare Services Columbia 4,150
46 GBMC – Greater Baltimore Medical Center Towson 3,998
47 W. R. Grace and Company Columbia 3,700
48 Merkle Group Columbia 3,700
49 Sunburst Hospitality Silver Spring 3,500
50 Furuno Denton 3,500
51 Johns Hopkins Bayview Medical Center Baltimore 3,300
52 Legg Mason Baltimore 3,300
53 GP Strategies Columbia 3,300
54 Peninsula Regional Medical Center Salisbury 3,300
55 ASRC Federal Laurel 3,281
56 Davco Acquisition Holding Crofton 3,280
57 Holy Cross Health Silver Spring 3,270
58 Nuclear Regulatory Commission Rockville 3,186
59 Meritus Health Hagerstown 3,105
60 Hcf Baltimore 3,100
61 The Shelter Group Baltimore 3,100
62 The Whiting-Turner Contracting Company Towson 3,008
63 ACS GOVERNMENT SOLUTIONS GROUP Rockville 3,000
64 MONTGOMERY GEN HOSPITAL FOUND Olney 3,000
65 DOCTORS COMMUNITY HOSPITAL Lanham 3,000
66 GXS Gaithersburg 3,000
67 Rosemore Baltimore 3,000
68 Prince George’s Community College Largo 3,000
69 F. Edward Hebert School of Medicine Bethesda 3,000
70 DURON Beltsville 3,000
71 Integrated Service Management Rockville 3,000
72 ACACIA LIFE INSURANCE Bethesda 3,000
73 Darrell Barrett and Renaissance Salon and Spa Cockeysville 3,000
74 SLEEP SERV OF AMERICA Glen Burnie 3,000
75 Legg Mason Wood Walker Baltimore 2,960
76 Ca Holding I Baltimore 2,820
77 Synutra International Rockville 2,600
78 Frederick Memorial Hospital Frederick 2,600
79 Chimes Baltimore 2,579
80 Sheppard Pratt Health System Towson 2,555
81 Mid-Atlantic Health Care Timonium 2,520
82 Kennedy Krieger Institute Baltimore 2,500
83 Commissioned Corps of the U.S. Public Health Service Rockville 2,500
84 Inovalon Bowie 2,500
85 University of Maryland Medical Center Baltimore 2,397
86 SGT Greenbelt 2,300
87 Anne Arundel Medical Center Annapolis 2,300
88 Carroll County Public Schools Westminster 2,250
89 TBC Baltimore 2,250
90 Morgan State University Baltimore 2,220
91 Chindex International Bethesda 2,134
92 Wheelabrator Baltimore 2,100
93 Real Hospitality Group Ocean City 2,100
94 Prometric Baltimore 2,077
95 FutureCare Health Pasadena 2,019
96 Cystic Fibrosis Foundation Bethesda 2,016
97 WTS International Rockville 2,000
98 Adams & Associates Columbia 2,000
99 Infosys Public Services Rockville 2,000
100 Bozzuto Group Greenbelt 2,000

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