You can search for Maryland businesses three ways. The fastest is the free CompanyData.com lookup tool at the top of this page. Type a company name and get instant results including address, registration number, entity type, and revenue estimates. You can also search the official Maryland State Department of Assessments and Taxation at https://egov.maryland.gov/BusinessExpress/EntitySearch for authoritative filing status. Note that Maryland files business entities through the Maryland State Department of Assessments and Taxation, not a traditional Secretary of State office. For developers, our API provides programmatic access to all MD business records for bulk lookup, KYB verification, and CRM enrichment.
Free Maryland business records search
Maryland's economy is built on defense, biotech, and healthcare, with thousands of active business entities on file. CompanyData.com gives you instant access to MD company records. Search by company name or registration number to find addresses, entity types, founding dates, industry classifications, and revenue estimates. Our database covers active and inactive entities filed with the Maryland State Department of Assessments and Taxation, plus enriched data fields not available in the official state filing system.
Maryland is home to the highest concentration of federal government and defense contractors per capita. Major biotech and life sciences corridor along I-270. The MD economy is driven by defense, biotech, healthcare, and federal services, and our database tracks businesses across all of these sectors. Whether you're verifying a vendor, prospecting new leads, or running a KYB check, you can pull complete MD company profiles in seconds.
This is a faster, more data-rich alternative to searching the official Maryland State Department of Assessments and Taxation portal directly. You get the same registry data plus revenue estimates, employee counts, SIC and NAICS codes, corporate hierarchy, and bulk CSV export, all in one search.
Top Companies in Maryland
Largest Maryland business entities by revenue. Includes MD defense, biotech, healthcare companies and more.
| Company Name | Country | City | Address 1 | Phone | 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 | Amergis Healthcare Staffing, INC. | *****@***.*** | USA | Columbia | 7223 Lee Deforest Dr | +** ******** | Howard | 21046 | aniohealthcareservices.***** | 2018 | $3,268,519,000 | 210 | Corporation | N/A | D19297050 |
| 2 | Johns Hopkins Healthcare LLC | ******@****.*** | USA | Hanover | 7231 Parkway Dr Ste 100 | +** ********* | Anne Arundel | 21076 | ehp.***** | 1994 | $2,728,986,000 | 520 | Corporation | N/A | W03985603 |
| 3 | Board Of Education Of Montgomery County | *******@*****.*** | USA | Rockville | 850 Hungerford Dr Rm 149 | +** ******** | Montgomery | 20850 | montgomeryschoolsmd.***** | 1858 | $2,683,674,835 | 47 | Corporation | N/A | N/A |
| 4 | Brixmor Property Group INC. | ********@******.*** | USA | Rising Sun | 40 Rising Sun Town Ctr | +** ********* | Cecil | 21911 | brixmor.***** | 2013 | $1,285,054,000 | 2 | 573 | N/A | |
| 5 | James G. Davis Construction CORPORATION | *********@*******.*** | USA | Rockville | 12530 Parklawn Dr Ste 100 | +** ******** | Montgomery | 20852 | davisconstruction.***** | 1986 | $1,120,652,443 | 584 | Corporation | N/A | 01076405 |
| 6 | Finra Regulation, INC. | **********@********.*** | USA | Rockville | 9509 Key West Ave 2nd Fl | +** ********* | Montgomery | 20850 | finra.***** | 1996 | $1,118,127,486 | 60 | Corporation | 29 | 2585743 |
| 7 | Mercy Health Services, INC. | ***********@***.*** | USA | Baltimore | 301 Saint Paul Pl | +** ******** | Baltimore City | 21202 | mercyresidency.***** | 1999 | $1,060,580,000 | 1 | Corporation | N/A | D05321344 |
| 8 | Hh Medstar Health, INC. | ************@****.*** | USA | Columbia | 10980 Grantchester Way Ste 700 | +** ********* | Howard | 21044 | medstarhealth.***** | 2011 | $865,504,764 | 11 | Corporation | N/A | D02413839 |
| 9 | T. Rowe Price New Income Fund, INC. | *****@*****.*** | USA | Baltimore | 100 E Pratt St Fl 4 | +** ******** | Baltimore City | 21202 | troweprice.***** | 1973 | $818,312,000 | 7 | Corporation | N/A | D00455196 |
| 10 | Purple Line Transit Partners, LLC | ******@******.*** | USA | Riverdale | 5700 Rivertech Ct | +** ********* | Anne Arundel | 20737 | N/A | 2016 | $790,547,249 | 1 | Corporation | 553 | 5876180 |
Showing 10 of 1,022,384 companies
Request Free SampleHow to look up a business in Maryland
There are three ways to search for Maryland business entities:
Use the free CompanyData.com tool above
Type a company name and get instant results. We aggregate Maryland business records from the Maryland State Department of Assessments and Taxation and enrich them with revenue estimates, employee counts, and SIC/NAICS industry classifications that the official MD filing system does not provide.
Search the official Maryland State Department of Assessments and Taxation
Visit https://egov.maryland.gov/BusinessExpress/EntitySearch for the authoritative state filing record. This is slower than CompanyData.com but provides direct access to official filing documents.
Use the CompanyData.com API
Developers can pull Maryland business records programmatically for KYB verification, lead enrichment, CRM auto-fill, and bulk data export. From $0.10 per call.
What you can find in Maryland business records
Maryland State Department of Assessments and Taxation registry data
- Registered business name
- Entity type (LLC, Corp, LP, etc.)
- Registration / filing number
- Filing date & status (active/inactive)
- Registered agent & principal address
Enriched MD data (CompanyData.com)
- Revenue estimates & employee counts
- Industry classification (SIC & NAICS) for Maryland's defense, biotech sectors and more
- Corporate hierarchy & parent company
- Email & phone (with data license)
- Website & trade names
- Bulk export to CSV
Maryland Business Entity Types
Maryland recognizes all standard US business entity types. Whether you're starting a defense company or a professional services firm, the right structure depends on your liability protection needs, tax treatment, and growth plans. Here are the entity types you'll find when searching Maryland business records:
- Limited Liability Company (LLC): The most popular entity type for new Maryland businesses. The Maryland LLC filing fee is $100. LLCs offer personal liability protection with pass-through taxation and minimal compliance requirements.
- Corporation (C-Corp / S-Corp): C-Corps are taxed at the entity level and are the standard structure for venture-backed startups and companies planning to issue stock or go public. S-Corps elect pass-through taxation but are limited to 100 shareholders. Filing fee: $120.
- Limited Partnership (LP): A partnership with one or more general partners (who manage the business and bear unlimited liability) and limited partners (who invest but have limited liability). LPs are common in real estate, private equity, and investment fund structures.
- Limited Liability Partnership (LLP): Used primarily by professional service firms such as law, accounting, medicine, and architecture practices. In an LLP, all partners have limited liability for the firm's debts and the actions of other partners. LLPs are common in Maryland's healthcare sector.
- Nonprofit Corporation: Organized for charitable, educational, religious, or scientific purposes. Eligible for federal tax-exempt status under IRC Section 501(c)(3) after IRS approval. Maryland nonprofits file with the Maryland State Department of Assessments and Taxation and must comply with state-specific reporting requirements.
Maryland Filing Fees and Requirements
Forming a business entity in Maryland requires filing with the Maryland State Department of Assessments and Taxation and paying a one-time formation fee. Annual maintenance requirements vary by entity type.
LLC Formation
$100Filing feeCorporation
$120Filing feeAnnual Report
$300Annual feeKey facts about Maryland businesses
- Maryland is home to the highest concentration of federal government and defense contractors per capita
- Major biotech and life sciences corridor along I-270
Common reasons to look up a Maryland business
KYB / Compliance Verification
Verify Maryland businesses before onboarding customers, vendors, or partners. Confirm that a MD entity is actively registered with the Maryland State Department of Assessments and Taxation, check its entity type, and validate its filing history.
Sales Prospecting
Find Maryland companies matching your ideal customer profile. Target MD's defense and biotech sectors by filtering on SIC/NAICS industry code, revenue range, employee count, or location. Export matching Maryland companies to CSV for outreach.
Vendor Due Diligence
Before signing contracts or sending payments, confirm that a Maryland vendor is a real, registered, active entity. You can verify registration status, formation date, and registered agent details in seconds.
Market Research
Analyze Maryland's defense, biotech, and healthcare landscape. Count businesses by sector, identify market leaders, benchmark competitors by revenue and employee count, and track industry concentration across MD regions.
Background Checks
Look up the corporate history of any Maryland entity: formation date, name changes, mergers, and dissolution records. Check whether annual reports have been filed and whether the entity is in good standing with the Maryland State Department of Assessments and Taxation.
Lead Enrichment
Enrich your CRM with Maryland company data via the CompanyData.com API. Append revenue estimates, employee counts, SIC/NAICS industry codes, and corporate hierarchy to your existing MD contacts. From $0.10 per enrichment call.
Frequently asked questions about Maryland business search
Maryland business records include the registered company name, entity type (LLC, Corporation, LP, etc.), filing status (active/inactive), formation date, registered agent, principal business address, and registration number. CompanyData.com enriches these records with fields you won't find in the state filing system: estimated revenue, employee count, SIC/NAICS industry classification, corporate hierarchy, and parent company linkage. This is especially useful for researching Maryland's defense and biotech sectors.
The standard Maryland LLC filing fee is $100, paid to the Maryland State Department of Assessments and Taxation.. Maryland also requires an annual report with a $300 fee, which is among the highest in the US.
Filing Articles of Incorporation in Maryland costs $120, paid to the Maryland State Department of Assessments and Taxation. Corporations must also file annual reports to maintain good standing.
Maryland business records list the registered agent and, in some cases, directors or members of record. However, the Maryland State Department of Assessments and Taxation filing system rarely shows the ultimate beneficial owner. For full ownership data including UBO (Ultimate Beneficial Owner) information and corporate hierarchy, use the CompanyData.com API, which combines MD registry data with ownership records from multiple sources.
An active Maryland business is in good standing, meaning its filings are current and it can legally conduct business in MD. Inactive (dissolved, suspended, or forfeited) entities cannot transact. In Maryland, entities that fail to file annual reports or pay franchise taxes can be administratively dissolved or suspended by the Maryland State Department of Assessments and Taxation. CompanyData.com shows both active and inactive entities so you can verify a company's full history.
Yes. The CompanyData.com MD business lookup at the top of this page is free with no signup required. The official Maryland State Department of Assessments and Taxation portal is also free to search. CompanyData.com is faster and includes enriched fields (revenue, employees, SIC/NAICS codes) that the state portal does not provide. For bulk access or API integration, paid plans start at $0.10 per lookup.
Maryland recognizes Limited Liability Companies (LLCs), Corporations (C-Corp and S-Corp), Limited Partnerships (LPs), Limited Liability Partnerships (LLPs), General Partnerships, Sole Proprietorships, and Nonprofit Corporations. You can search for any of these entity types using the lookup tool above.
An Employer Identification Number (EIN) is issued by the IRS, not by Maryland. After forming your MD entity with the Maryland State Department of Assessments and Taxation, apply for an EIN for free at irs.gov.
The official Maryland business filing portal is maintained by the Maryland State Department of Assessments and Taxation at https://egov.maryland.gov/BusinessExpress/EntitySearch. Unlike most states, Maryland handles business filings through the Maryland State Department of Assessments and Taxation rather than a Secretary of State office. CompanyData.com offers a faster search experience with additional data fields like revenue estimates and industry classification that the state portal does not include.
CompanyData.com refreshes MD business records daily from official Maryland State Department of Assessments and Taxation filings. Revenue, employee, and corporate hierarchy data is updated on a rolling basis from multiple sources. The official state system is updated in real time as filings are submitted.
Yes, CompanyData.com supports CSV export of MD business records and provides a REST API for programmatic bulk access. This is used for sales prospecting, lead enrichment, KYB verification, and market research. Filter by Maryland's key industries (Defense, Biotech, Healthcare), revenue range, employee count, or entity type.