United States Defense Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

United States Defense Market Trends and Insights

Precision-Munitions Replenishment and Stockpile Expansion

Demand for missiles and munitions is driving substantial expansion of production capacity across the US defense industrial base. In July 2026, Lockheed Martin received a seven-year PAC-3 MSE contract modification worth up to USD 53.86 billion, bringing the total multiyear contract value to USD 58.62 billion when combined with the April 2026 year-one award.^{[1]Lockheed Martin, “Department of War Awards Lockheed Martin USD 58.62 Billion for Multiyear PAC-3 MSE Production,” Lockheed Martin, news.lockheedmartin.com.} The company also received a USD 35.33 billion multiyear THAAD production contract, alongside plans to expand annual THAAD interceptor capacity from 96 to 400 units. Raytheon entered five framework agreements of up to seven years, covering Tomahawk, AMRAAM, SM-3 Block IB and IIA, and SM-6.^{[2]RTX, “Raytheon Partners With Department of War on Five Landmark Agreements to Expand Critical Munition Production,” RTX, rtx.com.} These longer-term commitments provide greater demand visibility for manufacturers and their supply chains and support investment in additional production capacity.

Rapid Adoption of Autonomous and Attritable Defense Systems

Autonomous and attritable systems are receiving increased US defense investment as the DoD seeks to procure lower-cost unmanned capabilities at a greater scale. The FY2026 budget identifies USD 13.40 billion for autonomy and autonomous systems, including USD 9.40 billion for unmanned and remotely operated aerial vehicles. Separately, the Department of the Navy identified USD 1.30 billion for counter-UAS capabilities. The Drone Dominance Program is also allocating USD 1.00 billion to support the procurement and manufacture of approximately 340,000 small unmanned aircraft systems over two years. Higher procurement volumes can expand demand across airframes, payloads, communications, software, power systems, and other supporting components.

Allied Procurement and Co-Development Expanding Production Demand

Foreign defense demand is supporting the US defense industrial base by increasing production scale and providing additional demand for domestically manufactured systems. An April 2025 executive order directed reforms to improve the speed and accountability of foreign defense sales while supporting domestic production and opportunities to reduce unit costs. Lockheed Martin increased HIMARS annual production capacity from 48 to 96 launchers, supported by approximately USD 2.80 billion in US Army contracts and strong domestic and international demand. The US policy also requires that arms transfers be managed without materially harming force readiness or worsening critical production backlogs, making additional industrial capacity important to support both domestic and allied requirements.

AI-Enabled C4ISR Driving Demand for Decision-Superiority Capabilities

AI-enabled data architectures are becoming increasingly important within the US C2 modernization. The 25th Infantry Division evaluated Next Generation Command and Control during Lightning Surge in January 2026, integrating data from multiple systems to improve tactical access to operational information. Following operational validation involving the 4th and 25th Infantry Divisions, the Army established an NGC2 common data-layer baseline in June 2026. The architecture is designed to bring data, applications, sensors, and AI-enabled capabilities into a more integrated operational environment, increasing demand for secure software integration, data infrastructure, communications, cybersecurity, and mission-system capabilities.

Defense-Industrial Capacity Gaps and Persistent Production Lead Times

Industrial capacity limits constrain the United States defense market even when funding supports munitions and naval programs. Solid rocket motors, PAC-3 seeker components, and specialized shipbuilding labor remain important bottlenecks. The FY2026 budget includes USD 2.60 billion in funding for Industrial Base Analysis and Sustainment and Defense Production Act Title III. These funds address risks involving critical minerals, microelectronics, castings, and forgings. The DoD acquired a 15% stake in MP Materials during 2025 to support domestic rare-earth magnet capacity.^{[3]US Department of Defense Comptroller, “FY 2026 Budget Request Overview Book,” Defense.gov, comptroller.defense.gov.} However, planned magnet capacity will not reach 10,000 metric tons annually until 2028. Until then, material shortages can slow production of missiles, electric-drive vessels, and unmanned systems.

Cybersecurity and Classified-Integration Requirements Slowing Software Deployment

Cybersecurity and classified-system requirements can delay software adoption across the United States defense market, especially for smaller suppliers. The final Cybersecurity Maturity Model Certification rule took effect in November 2025. Level 2 requirements can require assessment by an authorized third-party organization for contractors handling controlled unclassified information. The DoD suspended Phase 2 of the rollout for review in July 2026. DFARS, export-control rules, and related compliance obligations add cost and time for new entrants. Large contractors with established classified networks can absorb these requirements more readily. Mid-tier software firms may face authorization cycles that erode their early deployment advantage.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

Segment Analysis

By Armed Forces: Army Spending Weight Supports the Largest Position

The Army held 40.55% of the United States defense market share in 2025, supported by ground-force modernization, soldier systems, and counter-unmanned aircraft programs. Its spending spans combat vehicles, brigade equipment, communications, and force-protection assets. This breadth gives the Army a large procurement base even as priorities shift toward distributed operations. Ground programs also generate recurring demand for maintenance, training, sensors, and tactical networks. The Army's modernization choices influence suppliers across the defense industrial base. Counter-drone adoption at brigade and lower echelons adds a new volume source for platforms and payloads. The United States defense market, therefore, remains tied to the Army's broad operational requirements. These requirements favor integrators that can connect vehicles, sensors, and command applications.

The Air Force is forecast to grow at a 4.98% CAGR through 2031, the highest among the armed forces. Collaborative Combat Aircraft development, B-21 production, and investments associated with Golden Dome support the service's modernization outlook. The CCA program transitioned to development and production contracting in June 2026, and operational testing continued throughout the year. The Navy remains closely linked to submarine and ship construction, where specialized suppliers, skilled labor, infrastructure constraints, and long-lead components can limit how quickly higher funding translates into delivered platforms.

By Type: Military Platforms Retain Weight While Unmanned Systems Accelerate

Military Platforms accounted for 39.50% of the United States defense market share in 2025, reflecting the high unit cost of submarines, armored vehicles, aircraft, and major combat systems. These programs absorb large procurement accounts and require extended qualification cycles. Their installed base also sustains maintenance, repair, and upgrade activity after delivery. Platform spending anchors demand for engines, structures, electronics, weapons integration, and training. This position gives established prime contractors an enduring role in the United States defense market. It also makes supplier performance and production schedules important to program outcomes. Large platforms are less flexible to scale than smaller systems. Their procurement profile helps explain the market's moderate aggregate growth rate.

Unmanned Systems is projected to grow at a 7.89% CAGR through 2031, the fastest rate among type segments. The FY2026 autonomy investment and the USD 1.00 billion Drone Dominance Program support increasing procurement volumes for unmanned capabilities. Weapons and ammunition also benefit from production expansion across PAC-3 MSE, THAAD, Tomahawk, AMRAAM, SM-6, and other missile and munition programs. C4ISR, tactical communications, cyber systems, soldier systems, maintenance, training, and infrastructure remain linked to broader joint-force modernization. The FY2026 budget includes USD 15.10 billion for cybersecurity to support joint, all-domain maneuvering and protect the US' interests in cyberspace. Growing deployment of smaller unmanned platforms is also increasing demand for compact, ruggedized sensors, secure communications equipment, and integrated mission payloads capable of operating in contested electromagnetic environments.

By Domain: Land Leads Spending While Space Expands Faster

Land commanded 40.45% of the United States defense market size in 2025 because Army modernization remains a central spending priority. The domain covers combat platforms, tactical systems, munitions, ground sensors, and force protection. Legacy vehicle fleets still require upgrades and recurring maintenance. At the same time, distributed autonomy is shifting the balance between large platforms and smaller, more connected systems. This transition supports demand for tactical networks, unmanned aircraft, counter-drone tools, and resilient logistics. Land programs also rely on domestic manufacturing capacity for vehicles, munitions, and electronics. The United States defense market is therefore affected by suppliers' ability to deliver both legacy sustainment and emerging capabilities. The mixed requirement creates space for incumbent and specialist suppliers.

Space is forecast to expand at a 6.98% CAGR through 2031, the fastest-growing domain. Combined FY2026 Space Force resources approach USD 40.00 billion. The FY2026 funding allocates approximately USD 40 billion to the US Space Force, supporting Golden Dome-related space capabilities, space control, resilient architectures, missile warning and tracking, communications, and space-domain awareness across the joint force. The Golden Dome architecture strengthens the integration of space-based sensors with missile-defense C2 systems. Naval investment in autonomous systems is also expanding, with the Department of the Navy allocating USD 5.30 billion for autonomy in FY2026, USD 2.20 billion more than in FY2025. This funding covers unmanned aircraft, surface, and undersea systems, including Medium Unmanned Surface Vessels (MUSVs), increasing demand for shared autonomy, sensing, communications, and command technologies across multiple operating domains.

By Procurement Nature: Domestic Production Dominates the Sourcing Mix

Indigenous production accounted for 69.54% of the United States defense market in 2025 and is forecast to grow at a 5.29% CAGR. The segment benefits from increased policy emphasis on domestic manufacturing, supply chain resilience, and defense-industrial capacity. The 2026 National Defense Strategy identifies strengthening the US defense industrial base as a core line of effort and calls for additional investment in domestic production capacity. The USD 1 billion Drone Dominance Program also operates within a broader policy framework that supports US-manufactured drones, thereby reinforcing opportunities for domestic platform, component, electronics, and subsystem suppliers. Growing emphasis on domestic sourcing is encouraging investment in critical materials, manufacturing capacity, and qualified suppliers, although constraints in specialized domestic capacity can affect production schedules.

Foreign procurement remains relevant where allied technologies, specialized components, or production capacity complement domestic supply. The 2026 National Defense Strategy specifically calls for leveraging allied and partner-nation production to help meet US requirements, while recent supply chain policy supports the qualification of both domestic and partner-nation sources for critical materials and components. Separately, reforms to Foreign Military Sales (FMS) are intended to leverage allied demand to strengthen the US production volumes, improve supply chain stability, and lower unit costs for the US and its partners. Together, these policies indicate that domestic production will remain dominant, while allied sourcing continues to play a targeted role in supporting interoperability, supply chain resilience, and specialized capability requirements.

Geography Analysis

The United States defense market is national in scope, with operational requirements and the location of specialized industrial capacity shaping procurement more than conventional state-level market segments. Connecticut and Virginia remain central to nuclear submarine construction, while Texas supports major missile, fire-control, sensor, and related defense manufacturing. Ohio is developing a significant autonomous-system manufacturing base through new large-scale production investment, while California maintains an established unmanned-aircraft development and manufacturing ecosystem. These clusters concentrate specialized labor, qualified facilities, and supplier networks that are difficult to replicate quickly. Northrop Grumman has also expanded tactical solid-rocket-motor capacity at its Allegany Ballistics Laboratory in West Virginia, including capacity supporting PAC-3 MSE and other missile requirements. The company has doubled its capacity since 2021 and expects to triple it by early 2027. 

The Indo-Pacific is one of the central priorities shaping the US defense requirements, particularly for long-range strike, undersea warfare, resilient communications, space capabilities, and distributed operations. The 2026 National Defense Strategy identifies defending the homeland and deterring China in the Indo-Pacific as its first two lines of effort. These requirements support continued investment in precision weapons, autonomous systems, resilient sensors, and C2 networks. European requirements and allied demand also support US missile, air defense, and ammunition production, while homeland defense is generating additional demand for missile defense and counter-UAS capabilities. In July 2026, AeroVironment announced a three-year USD 500 million IDIQ contract supporting the Domestic Shield Program, covering C-UAS capabilities for force protection and base defense.

The geographic profile of the United States defense market reflects the relationship between operational requirements and domestic capacity to manufacture qualified defense systems. Missile production depends on specialized suppliers for propulsion, seekers, electronics, and other components, while naval construction depends on a limited number of specialized shipyards, suppliers, and skilled workers. The GAO has identified infrastructure and workforce constraints as persistent challenges affecting Navy shipbuilding performance. Autonomous-system programs can draw from a broader technology base across software, sensors, electronics, airframes, and communications, although secure testing, integration, and qualification requirements remain important. Theater-driven requirements consequently create production signals across different parts of the US industrial base, resulting in a national procurement market shaped by regional production capacity and mission-specific priorities.