> 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/naics/541511/virginia/ # NAICS 541511 companies in Virginia Companies with NAICS code 541511 (Custom Computer Programming Services) headquartered in Virginia, with their cities, sizes and SIC codes. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** The biggest NAICS 541511 companies in Virginia by headcount range include Deltek, 3pillar Global and Id.Me. NAICS 541511 is the code for Custom Computer Programming Services. Among those counted, they are mostly small: 81% have 200 or fewer employees. ## Which NAICS 541511 companies are in Virginia? The biggest by headcount range include Deltek, 3pillar Global, Id.Me, Cynet Systems and Asta Crs. NAICS 541511 is the code for Custom Computer Programming Services. Names link to a company profile where we have one. | Company | City | Employees | | --- | --- | --- | | Deltek | Herndon | 1,001 to 5,000 | | 3pillar Global | Fairfax | 1,001 to 5,000 | | Id.Me | McLean | 1,001 to 5,000 | | Cynet Systems | Sterling | 1,001 to 5,000 | | Asta Crs | Ashburn | 1,001 to 5,000 | | Ampcus | Chantilly | 1,001 to 5,000 | | Ionidea | Fairfax | 1,001 to 5,000 | | Xmatters | Vienna | 1,001 to 5,000 | | Tkxel | Reston | 501 to 1,000 | | Brain Station 23 | Springfield | 501 to 1,000 | | Zolon Tech | Herndon | 501 to 1,000 | | Pantheon | Reston | 501 to 1,000 | | Bravens | Chantilly | 501 to 1,000 | | Rei Systems | Sterling | 501 to 1,000 | | Avizva | Reston | 501 to 1,000 | | Kiwitech | Vienna | 501 to 1,000 | | Level Access | Stafford | 501 to 1,000 | | Compqsoft | Leesburg | 501 to 1,000 | | Acclaim Technical Services | Reston | 501 to 1,000 | | Softeon | Reston | 501 to 1,000 | | Inadev | Reston | 501 to 1,000 | | Core4ce | Arlington | 501 to 1,000 | | Seneca Resources | Reston | 201 to 500 | | Technogen | Chantilly | 201 to 500 | | Radiant Digital | Vienna | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Which cities in Virginia? Within Virginia, Reston (12%), McLean (11%) and Herndon (9%) are the most common headquarters. **Figure: Cities of NAICS 541511 companies in Virginia.** Bars for the share of counted NAICS 541511 companies in Virginia headquartered in each city: Reston 12%, McLean 11%, Herndon 9%, Arlington 7%, Alexandria 7%, Fairfax 7%, Ashburn 6%, Chantilly 6%. *Share of counted NAICS 541511 companies in Virginia by headquarters city.* ## How big are they? 41% of the NAICS 541511 companies counted in Virginia have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. **Figure: Size of NAICS 541511 companies in Virginia.** Seven columns for the share of counted NAICS 541511 companies in Virginia in each employee range: 11 to 50 41%, 51 to 200 40%, 201 to 500 12%, 501 to 1,000 5%, 1,001 to 5,000 3%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted NAICS 541511 companies in Virginia in each employee range.* ## How old are they? Most were founded in the 2010s (42%), then the 2000s (39%). **Figure: When NAICS 541511 companies in Virginia were founded.** Eight columns for the share of counted NAICS 541511 companies in Virginia founded in each era: Before 1960 0%, 1960s 0%, 1970s 0%, 1980s 3%, 1990s 15%, 2000s 39%, 2010s 42%, 2020s 1%. *Share of counted NAICS 541511 companies in Virginia by the era they were founded in, for the ones that list a founding year.* ## How Virginia compares with the rest of the country - 41% of NAICS 541511 companies in Virginia have 50 or fewer employees, against 52% across NAICS 541511 companies nationwide. - 43% were founded in 2010 or later, against 51% across NAICS 541511 companies nationwide. ## Which SIC codes do they carry? The older SIC system and NAICS do not line up one to one. These are the SIC codes seen most here. **Figure: SIC codes of NAICS 541511 companies in Virginia.** Bars for the share of counted NAICS 541511 companies in Virginia with each code: 7371 76%, 7379 10%, 7373 4%. *Share of counted NAICS 541511 companies in Virginia by their SIC code.* [SIC 7373](https://enrich.chat/sic/7373/) ## How do you reach the people at these Virginia companies? The people to talk to are usually engineering, delivery and revenue leaders. Build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 541511 in Virginia ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the engineering, delivery and revenue leaders at companies with NAICS code 541511 in Virginia, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore About the code: [NAICS 541511: Custom Computer Programming Services](https://enrich.chat/naics/541511/). About the place: [companies in Virginia](https://enrich.chat/companies-in/virginia/). NAICS 541511 in other states: [California](https://enrich.chat/naics/541511/california/)[Texas](https://enrich.chat/naics/541511/texas/)[New York](https://enrich.chat/naics/541511/new-york/)[Florida](https://enrich.chat/naics/541511/florida/)[New Jersey](https://enrich.chat/naics/541511/new-jersey/)[Massachusetts](https://enrich.chat/naics/541511/massachusetts/)[Georgia](https://enrich.chat/naics/541511/georgia/)[Illinois](https://enrich.chat/naics/541511/illinois/)[Washington](https://enrich.chat/naics/541511/washington/)[Pennsylvania](https://enrich.chat/naics/541511/pennsylvania/) Other NAICS codes in Virginia: [NAICS 541512: Computer Systems Design Services](https://enrich.chat/naics/541512/virginia/)[NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/virginia/)[NAICS 621111: Offices of Physicians](https://enrich.chat/naics/621111/virginia/)[NAICS 531210: Offices of Real Estate Agents](https://enrich.chat/naics/531210/virginia/)[NAICS 238220: Plumbing, Heating, and Air-Conditioning](https://enrich.chat/naics/238220/virginia/)[NAICS 722511: Full-Service Restaurants](https://enrich.chat/naics/722511/virginia/)[NAICS 541613: Marketing Consulting Services](https://enrich.chat/naics/541613/virginia/)[NAICS 524210: Insurance Agencies and Brokerages](https://enrich.chat/naics/524210/virginia/)[NAICS 236115: New Single-Family Housing Construction](https://enrich.chat/naics/236115/virginia/) ## Frequently asked questions ### Which NAICS 541511 companies are in Virginia? The biggest by headcount range include Deltek, 3pillar Global, Id.Me, Cynet Systems and Asta Crs. The page lists 25 with links to their profiles where we have them. ### What is NAICS 541511? NAICS 541511 is the code for Custom Computer Programming Services, in sector 54: Professional, Scientific, and Technical Services. ### Which cities in Virginia have the most? Reston (12%), McLean (11%) and Herndon (9%) lead among the companies counted. ## Try this prompt Find the people at NAICS 541511 companies in Virginia ```text Use www.enrich.chat to find the engineering, delivery and revenue leaders at companies with NAICS code 541511 in Virginia, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 541511 in California](https://enrich.chat/naics/541511/california/) - [NAICS 541511 in Texas](https://enrich.chat/naics/541511/texas/) - [NAICS 541511 in New York](https://enrich.chat/naics/541511/new-york/) - [NAICS 541511 in Florida](https://enrich.chat/naics/541511/florida/) - [NAICS 541512 in Virginia](https://enrich.chat/naics/541512/virginia/) - [NAICS 236220 in Virginia](https://enrich.chat/naics/236220/virginia/) - [NAICS 621111 in Virginia](https://enrich.chat/naics/621111/virginia/) - [NAICS 531210 in Virginia](https://enrich.chat/naics/531210/virginia/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)