Companies in Washington

Behind every street in Washington sits a business. 190,947 of them, to be exact, all registered in the United States business register. The biggest single industry is general business services with 10,999 companies, roughly 6% of everything that does business in the city.

190,947 businesses indexed

Federal National Mortgage AssociationFederal National Mortgage Association
Showing 25 of 190,947 companies
Company NameCountryCityAddress 1State/ProvincePostal CodeWebsiteFounding YearYearly Revenue in U.S. DollarsEmployees TotalBusiness Legal Type - DescriptionNumber of Companies in GroupCompany Registration Number
1
Federal National Mortgage Association
USA
Washington
1100 15th St Nw
District of Columbia
20005-1707
fanniemae.*****
1938
$159,169,000,000
7,000
Corporation
52
N/A
2
Carlyle Group Management L.L.C.
USA
Washington
1001 Pennsylvania Ave Nw
District of Columbia
20004-2573
carlyle.*****
2011
$55,806,154,000
29,825
Corporation
1611
5011918
3
Danaher CORPORATION
USA
Washington
2200 Pennsylvania Ave Nw Ste 800w
District of Columbia
20037-1731
danaher.*****
1969
$24,568,000,000
60,000
Corporation
732
2103594
4
Siemens CORPORATION
USA
Washington
300 New Jersey Ave Nw Ste 1000
District of Columbia
20001-2268
usa.*****
1954
$20,000,000,000
60,000
Corporation
3698
2198655
5
Xylem INC.
USA
Washington
301 Water St Se Ste 201
District of Columbia
20003-3739
xylem.*****
2011
$9,035,000,000
22,000
Corporation
555
2011050500560
6
Federal Deposit Insurance CORPORATION
USA
Washington
550 17th St Nw
District of Columbia
20429-0002
fdic.*****
1933
$7,212,452,478
7,300
Proprietorship
132
N/A
7
Pepco Holdings LLC
USA
Washington
701 9th St Nw Ste 1300
District of Columbia
20068-0001
pepcofcu.*****
2016
$7,135,000,000
4,422
Corporation
314
3354875
8
The Carlyle Group INC
USA
Washington
1001 Pennsylvania Ave Nw Ste 220
District of Columbia
20004-2525
carlyle.*****
1987
$4,779,800,000
2,500
Corporation
1611
5011921
9
Fti Consulting, INC.
USA
Washington
555 12th St Nw Ste 3
District of Columbia
20004-1200
fticonsulting.*****
1982
$3,788,857,000
8,118
Corporation
216
D01427947
10
Leonardo Us Holding, INC.
USA
Washington
1625 I St Nw Fl 12
District of Columbia
20006-4073
N/A
2008
$3,648,000,000
7,300
Corporation
560
4611365
11
Potomac Electric Power Company
USA
Washington
701 9th St Nw Ste 3
District of Columbia
20068
pepco.*****
2016
$3,454,000,000
1,374
Corporation
314
570908
12
Carlyle Investment Management LLC
USA
Washington
1001 Pennsylvania Ave Nw
District of Columbia
20004-2505
carlyle.*****
1996
$3,321,238,000
1,775
Corporation
1611
2645133
13
The American National Red Cross
USA
Washington
431 18th St Nw
District of Columbia
20006-5304
redcross.*****
1881
$3,217,077,611
34,978
Corporation
1472
unavailable
14
Carlyle Partners Ii, L.P.
USA
Washington
1001 Pennsylvania Ave Nw Ste 220
District of Columbia
20004-2525
caryle.*****
1998
$3,180,904,000
1,700
Partnership of unknown type
1611
N/A
15
Gavi Alliance Unk
USA
Washington
2099 Pennsylvania Ave Nw
District of Columbia
20006-6800
gavi.*****
2009
$2,547,417,284
10
Corporation
N/A
980593375
16
Opportunity Finance Network
USA
Washington
901 D St Sw Ste 1050
District of Columbia
20024-2148
ofn.*****
1986
$2,333,785,289
40
Corporation
N/A
042939243
17
National Association Of Letter Carriers
USA
Washington
100 Indiana Ave Nw Ste 709
District of Columbia
20001-2196
nalc.*****
1889
$2,203,167,533
533
Corporation
1058
530114650
18
National Railroad Passenger CORPORATION
USA
Washington
1 Massachusetts Ave Nw
District of Columbia
20001-1401
amtrak.*****
1970
$2,081,804,000
18,650
Corporation
65835
710725
19
The Georgetown University
USA
Washington
37th and O St Nw
District of Columbia
20057-0001
maps.*****
1789
$1,871,012,000
9,700
Corporation
113
540000-DNP
20
Children's Hospital
USA
Washington
111 Michigan Ave Nw
District of Columbia
20010-2916
childrensnational.*****
1870
$1,837,853,000
6,000
Corporation
17
772301-DNP
21
Washington Hospital Center CORPORATION
USA
Washington
110 Irving St Nw
District of Columbia
20010-3017
medstarhealth.*****
1981
$1,792,629,121
5,637
Corporation
237
0921442
22
Smithsonian Institution
USA
Washington
1000 Jefferson Dr Sw
District of Columbia
20560
si.*****
1846
$1,760,300,000
6,100
Corporation
65835
N/A
23
Federal Agricultural Mortgage CORP.
USA
Washington
2100 Pennsylvania Ave Nw Ste 450n
District of Columbia
20037
farmermac.*****
1988
$1,629,885,000
212
Corporation
6
521578738
24
The George Washington University
USA
Washington
1918 F St Nw
District of Columbia
20052
precollege.*****
1821
$1,476,596,000
5,000
Corporation
159
X00314-DNP
25
Medstar-Georgetown Medical Center, INC.
USA
Washington
3800 Reservoir Rd Nw
District of Columbia
20007-2113
medstarhealth.*****
1898
$1,405,261,431
4,000
Corporation
237
200407

Showing 25 of 190,947 companies

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Largest industries in Washington

The biggest industry groups in Washington by registered company count, with the top five companies by revenue in each.

General business services

10,999 companies

SIC 7389

View all 10,999 in our tool →

Business Consulting Services, Not Elsewhere Classified

6,624 companies

SIC 8748

View all 6,624 in our tool →

Legal Services

6,329 companies

SIC 8111

View all 6,329 in our tool →

Restaurants and eating places

6,106 companies

SIC 5812

View all 6,106 in our tool →

Management consulting

4,892 companies

SIC 8742

View all 4,892 in our tool →

Real estate agents and managers

3,869 companies

SIC 6531

View all 3,869 in our tool →

Civic, Social, and Fraternal Associations

3,522 companies

SIC 8641

View all 3,522 in our tool →

Operators of Nonresidential Buildings

3,043 companies

SIC 6512

View all 3,043 in our tool →

All industries in Washington

Together, general business services, Business Consulting Services, Not Elsewhere Classified and Legal Services make up the top three industries in Washington, accounting for 13% of the city's commercial activity. The oldest company we can find in Washington is Senate, United States, founded in 1787, with House Of Representatives, United States not far behind. They're still here, along with hundreds of thousands of others.

Federal government drives everything in Washington, and around it circle the law firms, lobbyists, trade associations, think tanks and contractors that make the capital's real economy. All of them are in our data. Search Washington businesses in the live tool below, get the full list delivered as an Excel file, or pull the records straight into your own systems through our API.

190,947companies
  • Nonclassifiable Establishments33,513
  • Business Services, Not Elsewhere Classified10,999
  • Business Consulting Services, Not Elsewhere Classified6,624
  • Legal Services6,329
  • Eating Places6,106
  • Management Consulting Services4,892
  • Real Estate Agents and Managers3,869
  • Civic, Social, and Fraternal Associations3,522
  • Operators of Nonresidential Buildings3,043
  • Investors, Not Elsewhere Classified2,974
  • Other industries109,076

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Live search tool

Search Washington companies in our online tool with filters for industry, size, revenue and SIC code. Export your selection.

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Frequently Asked Questions

Common questions about searching, filtering, and ordering Washington company data.

Our Washington business directory currently lists every registered legal entity with a Washington address in the official United States business register. The exact count is shown live at the top of this page.
Washington records are sourced directly from the official United States business register and enriched with 50+ data points: revenue, employees, industry codes, contact details, and ownership.
Core registry fields are refreshed weekly. Enriched fields (revenue, employees, contact) are refreshed monthly so your Washington list never goes stale.
Yes. Every Washington record is tagged with SIC industry codes. You can request your directory filtered by one or several SIC codes, employee size bands, or revenue thresholds.
Excel (.xlsx), CSV, and JSON. For API customers, data is streamed as paginated JSON. Custom formats (Parquet, SQL dump) are available on request.
Yes. We only deliver legal-entity data and publicly listed business contact details. We do not include personal data of natural persons unless required by the company register itself (e.g. sole traders).
Yes. Request a free 100-record sample of Washington data and we will email it within one business day.
Yes. The full Washington dataset is available through our REST API with the same filters as our directory builder. See our API page for pricing tiers.
Standard Excel and CSV directories are delivered within 24 hours. API access is provisioned within one business day. Rush delivery (same-day) is available on request.
Snapshot data going back 3 years is available for most fields, and 7+ years for core registry fields. Useful for trend analysis and churn studies - ask for a custom quote.

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