General business services
5,476 companies
SIC 7389
Companies in Baltimore
Behind every street in Baltimore sits a business. 135,693 of them, to be exact, all registered in the United States business register. The biggest single industry is general business services with 5,476 companies, roughly 4% of everything that does business in the city.
135,693 businesses indexed
Constellation Energy CORPORATIONConstellation Energy CORPORATION
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Constellation Energy CORPORATION | USA | Baltimore | 1310 Point St | Baltimore City | 21231-3380 | exeloncorp.***** | 2021 | $25,533,000,000 | 15,339 | Corporation | 735 | 0007305437 |
| 2 | Constellation Energy Generation, LLC | USA | Baltimore | 1310 Point St | Baltimore City | 21231-3380 | constellation.***** | 2000 | $25,533,000,000 | 15,339 | Corporation | 735 | 0002979826 |
| 3 | The Whiting-Turner Contracting Company | USA | Baltimore | 300 E Joppa Rd | Baltimore City | 21286-3047 | whiting-turner.***** | 1934 | $13,800,390,474 | 4,560 | Corporation | 52 | D00244731 |
| 4 | The Johns Hopkins Health System CORPORATION | USA | Baltimore | 600 N Wolfe St | Baltimore City | 21287-0005 | jhmi.***** | 1986 | $9,639,119,000 | 13,000 | Corporation | 112 | 521465301 |
| 5 | The Hopkins Johns University | USA | Baltimore | 3400 N Charles St | Baltimore City | 21218-2680 | jobs.***** | 1867 | $9,547,200,000 | 37,600 | Corporation | 232 | D00089169 |
| 6 | Carefirst, INC. | USA | Baltimore | 1501 S Clinton St | Baltimore City | 21224-5730 | carefirst.***** | 1934 | $8,748,055,958 | 6,000 | Corporation | 40 | D04849782 |
| 7 | T. Rowe Price Group, INC. | USA | Baltimore | 100 E Pratt St | Baltimore City | 21202-1090 | troweprice.***** | 1937 | $7,314,800,000 | 7,773 | Corporation | 102 | D05650320 |
| 8 | University Of Maryland Medical System CORPORATION | USA | Baltimore | 250 W Pratt St | Baltimore City | 21201-2423 | umms.***** | 1984 | $5,587,604,000 | 12,000 | Corporation | 172 | N/A |
| 9 | Baltimore Gas And Electric Company | USA | Baltimore | 110 W Fayette St | Baltimore City | 21201-3708 | bge.***** | 1906 | $5,222,000,000 | 3,383 | Corporation | 310 | D00510735 |
| 10 | Under Armour, INC. | USA | Baltimore | 101 Performance Dr | Baltimore City | 21230-5684 | about.***** | 1996 | $4,966,370,000 | 14,400 | Corporation | 193 | D04444345 |
| 11 | City Of Baltimore | USA | Baltimore | 100 Holliday St Ste 250 | Baltimore City | 21202-3459 | baltimorecity.***** | 1797 | $3,555,871,000 | 26,400 | Corporation | 288 | 526000769 |
| 12 | Johns Hopkins Hospital | USA | Baltimore | 1800 Orleans St | Baltimore City | 21287-0010 | hopkinsmedicine.***** | 1867 | $2,798,752,000 | 12,000 | Corporation | 112 | D00089102 |
| 13 | Lifebridge Health, INC. | USA | Baltimore | 2401 W Belvedere Ave | Baltimore City | 21215-5216 | lifejobs.***** | 1985 | $2,200,000,000 | 6,000 | Corporation | 40 | 521402373 |
| 14 | Mercy Health Services, INC. | USA | Baltimore | 301 Saint Paul Pl | Baltimore City | 21202-2165 | mdmercy.***** | 1999 | $1,060,580,000 | 1 | Corporation | N/A | D05321344 |
| 15 | Healthsource Distributors, LLC | USA | Baltimore | 7200 Rutherford Rd Ste 150 | Baltimore City | 21244-2743 | healthsourcedistributors.***** | 2003 | $959,751,101 | 60 | Corporation | 2 | W07649759 |
| 16 | Legg Mason INC | USA | Baltimore | 100 International Dr | Baltimore City | 21202-4673 | leggmason.***** | 2020 | $925,979,758 | 3,275 | Corporation | 407 | D01223502 |
| 17 | Maryland Transportation Authority | USA | Baltimore | 2310 Broening Hwy | Baltimore City | 21224-6639 | maryland.***** | 2014 | $887,526,000 | 77 | Corporation | 4 | N/A |
| 18 | Sinai Hospital Of Baltimore, INC. | USA | Baltimore | 2401 W Belvedere Ave | Baltimore City | 21215-5270 | doctors.***** | 1868 | $847,021,134 | 4,497 | Corporation | 40 | D00197830 |
| 19 | T. Rowe Price New Income Fund, INC. | USA | Baltimore | 100 E Pratt St Fl 4 | Baltimore City | 21202-1081 | troweprice.***** | 1973 | $818,312,000 | 7 | Corporation | N/A | D00455196 |
| 20 | Johns Hopkins Bayview Medical Center, INC. | USA | Baltimore | 4940 Eastern Ave | Baltimore City | 21224-2780 | bayviewjobs.***** | 1986 | $800,765,000 | 3,300 | Corporation | 112 | D01708395 |
| 21 | Gbmc Healthcare, INC. | USA | Baltimore | 6701 N Charles St | Baltimore City | 21204-6808 | gbmc.***** | 1986 | $766,651,000 | 3,900 | Corporation | 33 | D02217222 |
| 22 | T. Rowe Price Associates, INC. | USA | Baltimore | 1307 Point St | Baltimore City | 21231-3827 | troweprice.***** | 1979 | $645,828,290 | 4,100 | Corporation | 102 | 520556948 |
| 23 | T. Rowe Price U.S. Treasury Funds, INC. | USA | Baltimore | 100 E Pratt St Fl 4 | Baltimore City | 21202-1081 | troweprice.***** | 2006 | $630,918,000 | 25 | Corporation | 102 | D02832004 |
| 24 | Franklin Square Hospital Center, INC. | USA | Baltimore | 9000 Franklin Square Dr | Baltimore City | 21237-3997 | medstarhealth.***** | 1901 | $628,744,757 | 3,019 | Corporation | 237 | D00104208 |
| 25 | Mercy Medical Center, INC. | USA | Baltimore | 345 Saint Paul St | Baltimore City | 21202-2123 | mdmercy.***** | 1945 | $628,590,000 | 4,228 | Corporation | 18 | D00152884 |
Showing 25 of 135,693 companies
Request Free SampleLargest companies in Baltimore
Which company is the largest in Baltimore depends on how you measure. You can look at valuation, at revenue or at how many people work there. Valuations are private for most companies, so here we stick to revenue and headcount.
By revenue, Constellation Energy CORPORATION comes first in Baltimore. It is part of a group with $25.5 billion in yearly revenue. By headcount, Baltimore, County Public Schools comes first with 25,000 employees. We only looked at the 92,457 corporations in Baltimore for this; sole traders, foundations and other legal forms are left out.
The two tables below show how all 135,693 companies in Baltimore are spread across revenue and headcount bands.
Yearly revenue
54.9%of companies have less than $100,000 in yearly revenue
| Revenue (USD) | Count | Share |
|---|---|---|
| up to $100,000 | 74,505 | 54.9% |
| $100,000 to $500,000 | 43,454 | 32.0% |
| $500,000 to $1M | 3,228 | 2.4% |
| $1M to $5M | 3,008 | 2.2% |
| $5M to $10M | 604 | 0.4% |
| $10M to $50M | 432 | 0.3% |
| $50M to $100M | 84 | 0.1% |
| $100M to $500M | 88 | 0.1% |
| $500M to $1B | 16 | <0.1% |
| $1B or more | 14 | <0.1% |
| Unknown | 10,260 | 7.6% |
Headcount
86.3%of companies have 1 to 4 employees
| Employees | Count | Share |
|---|---|---|
| 1-4 | 117,037 | 86.3% |
| 5-9 | 9,573 | 7.1% |
| 10-19 | 3,274 | 2.4% |
| 20-49 | 2,337 | 1.7% |
| 50-99 | 1,038 | 0.8% |
| 100-199 | 425 | 0.3% |
| 200-499 | 230 | 0.2% |
| 500-999 | 68 | 0.1% |
| 1,000-4,999 | 56 | <0.1% |
| 5,000-9,999 | 3 | <0.1% |
| 10,000+ | 1 | <0.1% |
| Unknown | 1,651 | 1.2% |
Source: business register and CompanyData. "Unknown" means no published figure.
Largest industries in Baltimore
The biggest industry groups in Baltimore by registered company count, with the top five companies by revenue in each.
Restaurants and eating places
4,497 companies
SIC 5812
Religious Organizations
3,370 companies
SIC 8661
Business Consulting Services, Not Elsewhere Classified
3,081 companies
SIC 8748
Operators of Nonresidential Buildings
2,900 companies
SIC 6512
Real estate agents and managers
2,577 companies
SIC 6531
Investors, Not Elsewhere Classified
2,562 companies
SIC 6799
General Contractors-Single-Family Houses
2,559 companies
SIC 1521
All industries in Baltimore
Together, general business services, restaurants and eating places and Religious Organizations make up the top three industries in Baltimore, accounting for 10% of the city's commercial activity. The oldest company we can find in Baltimore is Society Of ST. Sulpice Foundation U.S., INC., founded in 1791, with West Baltimore United Methodist Church not far behind. They are still here, along with 135,691 other businesses in Baltimore.
A working port since colonial times, Baltimore now leans on medicine and research, with Johns Hopkins anchoring an economy that still loads ships in the harbor. All of them are in our data. Look up a company in the table at the top of this page, get the full list delivered as an Excel file, or pull the records straight into your own systems through our API.
- Nonclassifiable Establishments27,504
- Business Services, Not Elsewhere Classified5,476
- Eating Places4,497
- Religious Organizations3,370
- Business Consulting Services, Not Elsewhere Classified3,081
- Operators of Nonresidential Buildings2,900
- Real Estate Agents and Managers2,577
- Investors, Not Elsewhere Classified2,562
- General Contractors-Single-Family Houses2,559
- Offices and Clinics of Doctors of Medicine2,334
- Other industries78,833
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Common questions about searching, filtering, and ordering Baltimore company data.
Our Baltimore business directory currently lists every registered legal entity with a Baltimore address in the official United States business register. The exact count is shown live at the top of this page.
Baltimore 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 Baltimore list never goes stale.
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