Verified Nov 2026
Electronics & Software
·
El Segundo, California
·
Since 2001
Millennium Space Systems, founded in 2001 and headquartered in El Segundo, California, manufactures small satellites and end-to-end spacecraft solutions for low Earth orbit and geostationary orbit missions. The company is an independent subsidiary of Boeing, acquired in 2018, and has an estimated headcount of 1,000 to 5,000 with estimated revenue of $250 to $500 million. It serves the defense and space sectors along with automotive, electronics, renewable energy, and industrial equipment markets. In June 2025, it delivered a pair of space vehicles to the launch site for NASA's TRACERS mission.
Millennium Space Systems at a glance
Revenue
$250-500M
Est. band
Employees
1,000-5,000
Founded
2001
Headquarters
El Segundo, California
Industries
Automotive
Electric Vehicles
Electronics
Military & Defense
Renewable Energy
Industrial Equipment
Overview
Millennium Space Systems, founded in 2001 and headquartered in El Segundo, California, manufactures small satellites and end-to-end spacecraft solutions for low Earth orbit and geostationary orbit missions. The company is an independent subsidiary of Boeing, acquired in 2018, and has an estimated headcount of 1,000 to 5,000 with estimated revenue of $250 to $500 million. It serves the defense and space sectors along with automotive, electronics, renewable energy, and industrial equipment markets. In June 2025, it delivered a pair of space vehicles to the launch site for NASA's TRACERS mission.
At a glance
Attribute | Detail |
|---|---|
Founded | 2001 |
Headquarters | El Segundo, California |
Employees | 1,000-5,000 |
Revenue | $250-500M (estimated) |
Primary capability | Electronics & Software |
What Millennium Space Systems makes
The company lists assembly among its products and reports that it has launched 14 satellites since its inception, with development timelines of 12 to 48 months from concept to launch.
Products and capabilities described on the company's own site include Assembly (source: millennium-space.com).
Latest developments
2026-04-16 — Millennium Space Systems | Aviation Week (aviationweek.com)
2026-02-20 — Boeing to boost production of missile-tracking sensors for military satellites - SpaceNews (spacenews.com)
2025-12-11 — Contract FA248723DA009 — Millennium Space Systems, Inc. / Department Of Defense | BesaGov (besagov.com)
2025-07-31 — Poised for growth, Millennium prioritizes efficiency and capacity - Defense News (defensenews.com)
2025-06-16 — Millennium Space Systems Delivers Pair of Space Vehicles to Launch Site for NASA's TRACERS Mission (millennium-space.com)
2025-06-03 — Space Force awards BAE $1.2B deal for missile-tracking satellites - Defense News (defensenews.com)
Company details
Millennium is a subsidiary of Boeing and reports work focused on U.S. national security missions, including missile warning and Earth observation. Millennium Space Systems was founded in 2001, has an estimated 1,000-5,000 employees, and is headquartered in El Segundo, California.
Frequently asked questions
What does Millennium Space Systems make?
Millennium Space Systems, founded in 2001 and headquartered in El Segundo, California, manufactures small satellites and end-to-end spacecraft solutions for low Earth orbit and geostationary orbit missions. The company is an independent subsidiary of Boeing, acquired in 2018, and has an estimated headcount of 1,000 to 5,000 with estimated revenue of $250 to $500 million. It serves the defense and space sectors along with automotive, electronics, renewable energy, and industrial equipment markets. In June 2025, it delivered a pair of space vehicles to the launch site for NASA's TRACERS mission.
Where is Millennium Space Systems headquartered?
Millennium Space Systems is headquartered in El Segundo, California (2265 East El Segundo Boulevard, El Segundo, California, 90245).
When was Millennium Space Systems founded?
Millennium Space Systems was founded in 2001.
How big is Millennium Space Systems?
Millennium Space Systems has an estimated 1,000-5,000 employees, with revenue in the $250-500M range (estimated).
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Last verified Nov 2026. Is this your company? Request a correction.
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