All 42 companies

A–Z by legal name

Company	Registry number	Registered	Status	City
AGILEX TECHNOLOGIES, INC.	FB033273	2009-02-23	Inactive	CHANTILLY
Amentum National Security Programs, Inc.	FB036683	2013-04-15	Active	CHANTILLY
AMENTUM SERVICES, INC.	FB034102	2010-02-03	Active	Chantilly
AMENTUM TECHNOLOGY, INC.	FB305374	2025-07-23	Active	Chantilly
AMERICAN SYSTEMS CORPORATION	FB020811	1997-12-15	Active	Chantilly
AMERICAN SYSTEMS CORPORATION	FB013535	1990-04-23	Inactive	CHANTILLY
Ampcus Inc	FB322630	2026-03-06	Active	Chantilly
ANALEX CORPORATION	FB224116	2022-04-01	Active	Chantilly
ARCFIELD LEGACY EMPLOYER, LLC	FL224119	2022-04-01	Inactive	CHANTILLY
Arlluk Technology Solutions, LLC	FL269346	2024-02-26	Active	Chantilly
AT&T TECHNICAL SERVICES COMPANY, INC.	FB028881	2004-09-02	Active	Chantilly
BOWMAN CONSULTING GROUP, LTD.	FB036358	2012-11-02	Inactive	CHANTILLY
C2 ESSENTIALS, INC.	FB031067	2006-10-23	Active	CHANTILLY
COMPASS AIRLINES, INC.	FB031969	2007-09-06	Inactive	CHANTILLY
CORT BUSINESS SERVICES CORPORATION	FB028629	2004-06-15	Active	Chantilly
COVERAGE, INC.	FB027311	2003-05-14	Inactive	CHANTILLY
DIAL & SAVE OF SOUTH DAKOTA, INC.	FB017539	1994-12-23	Inactive	CHANTILLY
ECS Mid-Atlantic, LLC	FL171159	2019-10-04	Inactive	CHANTILLY
ECS Midwest, LLC	FL176150	2020-01-21	Active	CHANTILLY
ENGILITY CORPORATION	FB032541	2008-04-04	Inactive	CHANTILLY
ENTINU, INC.	FB039461	2016-07-25	Inactive	Chantilly
GENERAL DYNAMICS GOVERNMENT SYSTEMS CORPORATION	FB008823	1983-03-02	Inactive	CHANTILLY
GENERAL DYNAMICS MISSION SYSTEMS, INC.	FB035233	2011-06-20	Active	Chantilly
Government Technical Services Corporation	FB333205	2026-07-09	Active	Chantilly
GRANULES PHARMACEUTICALS, INC.	FB127760	2016-11-10	Active	CHANTILLY
GTE TELECOM INCORPORATED	FB010277	1985-06-13	Inactive	CHANTILLY
Hamilton Resources Corporation	FB251583	2023-05-25	Active	Chantilly
HEXAGON US FEDERAL, INC.	FB034562	2010-08-13	Active	Chantilly
NEC ELUMINANT TECHNOLOGIES, INC.	FB022414	1999-04-05	Revoked	CHANTILLY
ONTRAC LOGISTICS, INC.	FB028016	2003-12-16	Active	Chantilly
PAVION CORP.	FB268500	2024-02-14	Active	Chantilly
PERATON ENTERPRISE SOLUTIONS LLC	FL004243	2008-09-18	Active	CHANTILLY
SRA INTERNATIONAL, INC.	FB034135	2010-02-18	Inactive	Chantilly
System High Corporation	FB265442	2023-12-29	Active	Chantilly
TENICA and Associates LLC	FL044041	2016-01-13	Inactive	Chantilly
THE TEACHING COMPANY SALES, LLC	FL044331	2016-05-16	Active	CHANTILLY
Tuknik Government Services, LLC	FL192712	2020-12-11	Active	Chantilly
U.S. INSPECT, INC.	FB019728	1997-01-21	Inactive	CHANTILLY
U.S. INSPECT, LLC	FL001553	2003-04-03	Revoked	CHANTILLY
vTech Healthcare Inc.	FB271667	2024-03-27	Revoked	Chantilly
WESTCON GROUP NORTH AMERICA, INC.	FB131534	2017-03-14	Inactive	Chantilly
The Bowen Consulting Group, Inc.	FB333006	2026-07-07	Active	Chantilly

Chantilly registrations by year

25 years

20263202512024320232202222020220191201712016420131201212011120103200912008220071200612004220033199911997219941199011985119831

Other cities in South Dakota

60 largest

Sioux Falls43,210Rapid City21,123Watertown9,802Aberdeen5,277Spearfish5,064Pierre4,245Brookings3,577Yankton2,878Mitchell2,792Box Elder2,241Sturgis2,148Madison2,142Brandon2,063New York2,036Belle Fourche1,735Wilmington1,660Harrisburg1,652Tea1,646Huron1,588Custer1,494Houston1,483Omaha1,327Vermillion1,277Chicago1,206Hot Springs1,203Dakota Dunes1,181Minneapolis1,181Hartford1,129Dallas1,104Atlanta870Piedmont855Canton852Fargo845Black Hawk838Denver828Milbank824North Sioux City817Lead799Sioux City772Deadwood766Dell Rapids765Hill City746Beresford668Chamberlain612Winner609Hermosa601San Francisco586Las Vegas568Webster565Mobridge554Lennox544Arlington539Platte529Sisseton520Fort Pierre508Austin507San Diego507Whitewood504Phoenix500Garretson464