The attack on Pearl Harbor on December 7, 1941, killed 2,403 Americans, including 2,335 military personnel and 68 civilians. Of those military deaths, 1,177 were sailors and Marines killed aboard the USS Arizona alone, nearly half of all fatalities that day. Another 1,178 people were wounded in the roughly two-hour attack.
Key takeaways
The National Park Service, which co-manages the Pearl Harbor National Memorial with the U.S. Navy, puts the total at 2,403 dead and 1,178 wounded from the surprise attack launched by Japanese forces early on a Sunday morning. The figure includes Army, Navy, and Marine Corps personnel along with civilians caught in the crossfire or killed by stray anti-aircraft fire that fell back onto Honolulu neighborhoods. The attack lasted approximately 90 minutes to two hours, striking battleships, airfields, and barracks across Oahu, not just the ships moored at Pearl Harbor itself. For context on how this single morning is remembered today, see our guide to visiting Pearl Harbor on the December 7 anniversary.
A single armor-piercing bomb penetrated the USS Arizona’s forward ammunition magazine, triggering a catastrophic explosion that sank the battleship in minutes. That one event killed 1,177 of the ship’s crew, more than any other vessel lost that day and close to half of all Pearl Harbor fatalities combined. Because recovery was never fully possible, most of those sailors and Marines remain inside the hull, which still lies submerged beneath the USS Arizona Memorial. This is the central reason the memorial is built directly over the wreck rather than beside it, and it’s also why many visitors describe the structure as a gravesite rather than a museum exhibit.
While the Arizona suffered the single worst loss of life, casualties occurred across nearly every part of the base:
The National WWII Museum and the U.S. Navy’s history program both maintain detailed ship-by-ship casualty breakdowns drawn from original action reports filed in the days after the attack.
Pearl Harbor’s death toll, while devastating, was smaller in absolute terms than many later Pacific battles, yet its psychological impact was far larger because it came without a declaration of war and struck a base considered secure. The attack also damaged or destroyed 19 U.S. Navy ships and more than 300 aircraft in a single morning, a scale of simultaneous loss the country had never experienced. It was this combination — surprise, concentrated casualties on one ship, and the direct attack on American soil — that led Congress to approve a declaration of war against Japan the very next day.
Standing at the USS Arizona Memorial, visitors look down into water where the ship’s rusted structure is still visible just below the surface, with oil occasionally rising to the surface even decades later. Names of the lost crew are inscribed on a marble wall inside the memorial, organized by ship and rank rather than alphabetically, which is itself a detail many guides point out during a visit. Because the memorial sits offshore and access is by Navy-operated boat with timed, reserved tickets, most first-time visitors join a guided experience to avoid the uncertainty of walk-up availability — something covered in more detail in our overview of what to expect on a Pearl Harbor bus tour. Pearl Harbor Official structures its tours around this reality, pairing hotel pickup with reserved memorial access so the historical weight of the site isn’t undercut by logistics.
Families and school groups in particular benefit from a guide who can walk through these numbers in context rather than simply reciting them, since the scale of loss is easier to understand when tied to specific ships and locations. Groups planning a visit around these themes may find it useful to review tips for planning a Pearl Harbor tour for school groups, which addresses how to present this history appropriately to younger visitors.
Q: How many people died at Pearl Harbor on December 7, 1941?
A total of 2,403 people died, including 2,335 military personnel and 68 civilians, according to National Park Service records.
Q: How many sailors died on the USS Arizona?
1,177 sailors and Marines died aboard the USS Arizona when a bomb detonated its forward ammunition magazine, making it the single deadliest loss of the attack.
Q: Are the remains of sailors still inside the USS Arizona?
Yes, most of the crew members killed aboard the USS Arizona were never recovered and remain entombed within the wreck, which rests beneath the memorial in Pearl Harbor.
Q: How many people were wounded at Pearl Harbor, not just killed?
Approximately 1,178 people were wounded in addition to the 2,403 killed, bringing the total number of casualties to well over 3,500.
Q: Did any civilians die during the Pearl Harbor attack?
Yes, 68 civilians were killed, some by Japanese aircraft fire and others by American anti-aircraft shells that fell back into Honolulu neighborhoods during the attack.
