As of early 2025, the United States has an estimated total inventory of about 5,177 nuclear warheads. This total includes:

• Approximately 1,770 warheads deployed on missiles and at bomber bases
• Around 1,930 warheads in reserve
• About 1,477 retired warheads awaiting dismantlement

The active stockpile, which includes deployed and reserve warheads, is roughly 3,700 to 3,748 warheads, according to recent official disclosures and expert estimates

. The U.S. nuclear arsenal is maintained as part of a nuclear triad comprising land-based intercontinental ballistic missiles (ICBMs), submarine-launched ballistic missiles (SLBMs), and strategic bombers. For example, about 800 warheads are assigned to ICBMs, with roughly half deployed and the rest in storage

. Overall, the U.S. nuclear stockpile has significantly declined from its Cold War peak of over 31,000 warheads in the 1960s but remains one of the largest and most sophisticated in the world