What Northrop Grumman plants do and where they are located

Northrop Grumman operates manufacturing and assembly facilities across the United States that build military aircraft, missiles, radar systems, and other defense equipment. The company does not publish a single master list of all active plants, but major facilities are concentrated in California, Texas, Virginia, and Alabama. Each plant specializes in different products — some assemble complete aircraft, others manufacture components or subsystems, and some handle final testing and delivery.

The largest and most visible Northrop Grumman plants are the ones that build the B-2 Spirit stealth bomber (Palmdale, California), the RQ-4 Global Hawk surveillance drone (San Diego, California), and the F/A-18 Super Hornet fighter jet (St. Louis, Missouri, though this is a joint facility with Boeing). Other major sites include facilities in Linthicum, Maryland; Chandler, Arizona; and Huntsville, Alabama. The company also operates smaller engineering centers and test ranges at various locations.

Key Takeaways

  • Northrop Grumman's largest plants are in California, Texas, Virginia, and Alabama, each focused on different aircraft or weapons systems.
  • The Palmdale, California facility is the primary assembly site for B-2 stealth bombers, one of the most expensive military aircraft ever built.
  • Many Northrop Grumman plants are co-located with or near military bases, particularly in Southern California and the Southeast.
  • Employment at these facilities ranges from a few hundred to several thousand workers, depending on the plant's size and current production contracts.
  • Plant locations and production schedules change based on U.S. Department of Defense contracts, which are publicly announced but subject to budget cuts or delays.

Palmdale, California — B-2 Spirit bomber assembly

The Palmdale plant, located in Los Angeles County about 50 miles north of downtown Los Angeles, is Northrop Grumman's flagship aerospace facility. This is where the B-2 Spirit stealth bomber is assembled and tested. The B-2 program has been in production since the 1980s, though the number of aircraft built is limited — the U.S. Air Force operates fewer than 20 B-2s in active service. Production is extremely slow and expensive, with each aircraft taking years to complete.

The Palmdale facility also handles engineering, design, and testing work for other Northrop Grumman programs beyond the B-2. The plant employs several thousand workers and is one of the largest aerospace employers in California. Because the B-2 program is mature and production is limited, the plant's workforce has remained relatively stable rather than growing, though contract changes can affect staffing levels year to year.

San Diego, California — RQ-4 Global Hawk and other unmanned systems

Northrop Grumman's San Diego facility manufactures the RQ-4 Global Hawk, a high-altitude, long-endurance surveillance drone used by the U.S. Air Force and allied nations. The Global Hawk is significantly smaller and less expensive than manned aircraft like the B-2, so production rates are higher and the workforce is larger than at Palmdale. The San Diego plant also produces components and subsystems for other unmanned aerial vehicles and sensor systems.

San Diego is home to multiple Northrop Grumman divisions and is one of the company's largest employment centers in the country. The facility is located near San Diego International Airport and has access to military testing ranges in Southern California. Like all defense contractors, Northrop Grumman's San Diego operations depend on U.S. Department of Defense funding and international sales, which fluctuate based on geopolitical conditions and budget cycles.

St. Louis, Missouri — F/A-18 Super Hornet production

Northrop Grumman operates a major facility in St. Louis as part of a joint venture with Boeing to manufacture the F/A-18 Super Hornet fighter jet. This plant is one of the largest aerospace manufacturing sites in the Midwest and employs thousands of workers. The F/A-18 is in continuous production for the U.S. Navy and Marine Corps, and the aircraft is also sold to allied nations, making it one of Northrop Grumman's highest-volume programs.

The St. Louis facility includes final assembly, testing, and delivery operations. Because the F/A-18 program has steady demand and a long production runway, this plant tends to have more stable employment than some other Northrop Grumman locations. However, production rates still depend on Navy budgets and international orders, which can change year to year.

Linthicum, Maryland — Missiles and integrated warfare systems

The Linthicum facility, located near Baltimore, is a major center for missile production and integrated warfare systems. Northrop Grumman manufactures air-to-air missiles, cruise missiles, and other guided weapons at this location. The plant also produces radar systems, fire control systems, and electronic warfare equipment. Linthicum is one of Northrop Grumman's oldest and most established facilities, with deep roots in the defense industry.

This plant serves both U.S. military customers and international defense programs. Like all Northrop Grumman locations, employment levels depend on active contracts and defense spending. The facility is located in a region with multiple other defense contractors and military installations, making it part of a larger aerospace and defense cluster in the Mid-Atlantic.

Huntsville, Alabama — Space and missile defense systems

Northrop Grumman's Huntsville facility focuses on space systems, missile defense, and advanced technologies. Huntsville is home to Redstone Arsenal, a major U.S. Army installation, and the city has become a hub for space and defense contractors. Northrop Grumman's presence in Huntsville includes engineering, manufacturing, and testing operations for programs ranging from satellite systems to ground-based air defense.

The Huntsville plant is part of a larger ecosystem of aerospace companies and government agencies in North Alabama. Employment at the facility is tied to space exploration budgets, missile defense funding, and Army modernization programs. Like other Northrop Grumman locations, staffing levels can shift based on contract wins, program delays, or changes in federal spending priorities.

How to find current information about Northrop Grumman plants

Northrop Grumman publishes information about its facilities and major programs on its corporate website, though the company does not maintain a detailed public directory of every plant and its current workforce. The U.S. Department of Defense publishes contract awards and program information through official channels, which can help identify which Northrop Grumman locations are involved in specific projects.

Local economic development agencies in California, Texas, Virginia, Maryland, and Alabama maintain information about major employers in their regions, including Northrop Grumman facilities. If you are researching a specific plant or program, the company's investor relations materials and quarterly earnings reports often discuss facility utilization, workforce changes, and program status. News outlets covering aerospace and defense also report on major announcements related to Northrop Grumman plants and contracts.

Frequently Asked Questions

Can I visit a Northrop Grumman plant?

Most Northrop Grumman facilities are restricted defense contractor sites and are not open to the public. Some plants occasionally host community events or educational tours for schools and organizations, but these are rare and require advance coordination. Your best option is to contact the local Northrop Grumman facility or the company's public relations office to ask about any scheduled public events.

How many people work at Northrop Grumman plants?

Northrop Grumman employs tens of thousands of workers across all its U.S. facilities combined. Individual plants range from a few hundred to several thousand employees, depending on the facility's size and current production levels. The company reports total employment figures in its annual reports, but specific plant-by-plant numbers are not always publicly detailed.

What products are made at each Northrop Grumman plant?

Different plants specialize in different products. Palmdale makes B-2 bombers, San Diego makes Global Hawk drones, St. Louis makes F/A-18 fighters, Linthicum makes missiles and radar systems, and Huntsville makes space and missile defense systems. Some plants also produce components or subsystems that are shipped to other facilities for final assembly.

Do Northrop Grumman plants hire from the local community?

Yes, Northrop Grumman plants hire engineers, technicians, manufacturing workers, and support staff from their local areas. Most positions require security clearances and background checks because the work involves classified defense programs. Job openings are posted on the Northrop Grumman careers website and through local job boards in the communities where plants are located.

What happens to a plant if a program is cancelled?

If a major program is cancelled or significantly reduced, the affected plant may lay off workers or shift to other programs. Northrop Grumman has multiple programs at most facilities, so a single cancellation does not necessarily close a plant. However, large program reductions can have significant local economic impacts in communities where Northrop Grumman is a major employer.