> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/district-of-columbia/ # Companies in District of Columbia Larger organizations headquartered in District of Columbia, the industries and cities they sit in, and how to reach their people. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Larger organizations headquartered in District of Columbia include United States Marine Corps, U.S. Navy, HHS.gov, Danaher and U.S. Department of Transportation. Below are the industries and cities that lead, the tools that stand out and how big they are. ## Which larger organizations are headquartered in District of Columbia? They include United States Marine Corps, U.S. Navy, HHS.gov, Danaher and U.S. Department of Transportation. The table lists a selection in alphabetical order; names link to company profiles. | Company | Industry | Size | | --- | --- | --- | | [AGS Health](https://enrich.chat/company/ags-health/) | Hospitals and health care | 10,000 to 25,000 | | [American Red Cross](https://enrich.chat/company/american-red-cross/) | Nonprofit organization management | 25,000 to 50,000 | | AmeriCorps | Government administration | 5,000 to 10,000 | | Cava Mezze Grill | Restaurants | 5,000 to 10,000 | | [Danaher](https://enrich.chat/company/danaher/) | Medical devices | 50,000 to 100,000 | | [Fannie Mae](https://enrich.chat/company/fannie-mae/) | Financial services | 10,000 to 25,000 | | [FEMA](https://enrich.chat/company/fema/) | Government administration | 10,000 to 25,000 | | Georgetown University | Higher education | 10,000 to 25,000 | | [HHS.gov](https://enrich.chat/company/hhs-gov/) | Government administration | 50,000 to 100,000 | | Hogan Lovells | Law practice | 5,000 to 10,000 | | [Ibex](https://enrich.chat/company/ibex/) | Outsourcing and offshoring | 25,000 to 50,000 | | [IFC - International Finance](https://enrich.chat/company/ifc-international-finance/) | Financial services | 10,000 to 25,000 | | [Marine Corps Recruiting](https://enrich.chat/company/marine-corps-recruiting/) | Military | 25,000 to 50,000 | | National Geographic | Publishing | 5,000 to 10,000 | | Peace Corps | International affairs | 5,000 to 10,000 | | [U.S. Department of Commerce](https://enrich.chat/company/u-s-department-of-commerce/) | Government administration | 25,000 to 50,000 | | U.S. Department of Education | Government administration | 5,000 to 10,000 | | [U.S. Department of Transportation](https://enrich.chat/company/u-s-department-of-transportation/) | Government administration | 50,000 to 100,000 | | [U.S. Navy](https://enrich.chat/company/u-s-navy/) | Military | 100,000+ | | [United States Courts](https://enrich.chat/company/united-states-courts/) | Government administration | 25,000 to 50,000 | | [United States House of Representatives](https://enrich.chat/company/united-states-house-of-representatives/) | Legislative office | 10,000 to 25,000 | | [United States Marine Corps](https://enrich.chat/company/united-states-marine-corps/) | Military | 100,000+ | | [United States Space Force](https://enrich.chat/company/united-states-space-force/) | Defense and space | 10,000 to 25,000 | | [US Environmental Protection Agency (EPA)](https://enrich.chat/company/us-environmental-protection-agency-epa/) | Government administration | 10,000 to 25,000 | | [USAID](https://enrich.chat/company/usaid/) | International affairs | 10,000 to 25,000 | | [USCIS](https://enrich.chat/company/uscis/) | Government administration | 25,000 to 50,000 | | [USDA](https://enrich.chat/company/usda/) | Government administration | 10,000 to 25,000 | | Vox Media | Online media | 10,000 to 25,000 | | [World Bank](https://enrich.chat/company/world-bank/) | International trade and development | 25,000 to 50,000 | | [Xylem](https://enrich.chat/company/xylem/) | Machinery | 10,000 to 25,000 | ## Which industries are biggest in District of Columbia? The bars show the share of the organizations listed for District of Columbia that work in each industry. **Figure: Industries of organizations in District of Columbia.** Bars for the share of listed organizations in District of Columbia by industry: Government administration 18%, Law practice 12%, Nonprofit organization management 10%, Financial services 7%, Higher education 7%, Military 4%. *Share of the organizations listed for District of Columbia in each industry.* ## What technology stands out in District of Columbia? Each tool below is detected more often among organizations in District of Columbia than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools that stand out in District of Columbia.** Bars for the share of listed organizations in District of Columbia where each tool was detected, with a tick for the share across everything listed: Mailchimp 21% against 4%, Cornerstone OnDemand 19% against 3%, Constant Contact 18% against 2%, Webex 16% against 3%, Moat 12% against 2%, Chartbeat 10% against 1%. *Share of listed organizations in District of Columbia where each tool was detected. The tick marks the share across all listed organizations.* ## How big are the organizations in District of Columbia? The columns show how the listed organizations spread across six size ranges. **Figure: Size of organizations in District of Columbia.** Six columns for the share of listed organizations in District of Columbia in each size range from 2,000 to over 100,000 employees: 2-5K 37%, 5-10K 28%, 10-25K 18%, 25-50K 10%, 50-100K 4%, 100K+ 3%. *Share of the organizations listed for District of Columbia in each size range.* ## Browse District of Columbia by industry [Government administration](https://enrich.chat/companies-in/district-of-columbia/government-administration/) ## How do you reach the people at organizations in District of Columbia? Pick an organization from the table, then ask your AI agent for the people in the roles you sell to. ```text Use www.enrich.chat to find the CIOs and heads of IT at [company] in District of Columbia, with titles and verified work emails ``` ## Which District of Columbia cities have industry pages? Pick a city to see its bigger companies by industry. [Washington, DC](https://enrich.chat/companies-in/washington-dc/) ## Frequently asked questions ### Which larger organizations are headquartered in District of Columbia? They include United States Marine Corps, U.S. Navy, HHS.gov, Danaher and U.S. Department of Transportation. The page lists a selection with links to their profiles. ### Which industries are biggest in District of Columbia? The biggest are government administration, law practice, nonprofit organization management and financial services. ### What technology stands out in District of Columbia? Tools that stand out include Mailchimp, Cornerstone OnDemand, Constant Contact and Webex. ### How do I contact people at these organizations? Ask your AI agent to use www.enrich.chat to find the people in the roles you sell to, with titles and verified work emails. ## Try this prompt Find people at companies in District of Columbia ```text Use www.enrich.chat to find the CIOs and heads of IT at [company] in District of Columbia, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Companies in Indiana](https://enrich.chat/companies-in/indiana/) - [Companies in Utah](https://enrich.chat/companies-in/utah/) - [Companies in Connecticut](https://enrich.chat/companies-in/connecticut/) - [Companies in Tennessee](https://enrich.chat/companies-in/tennessee/) - [Companies in Arizona](https://enrich.chat/companies-in/arizona/) - [Companies in Colorado](https://enrich.chat/companies-in/colorado/) - [Companies in Maryland](https://enrich.chat/companies-in/maryland/) - [Companies in Alabama](https://enrich.chat/companies-in/alabama/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)