More than 2,600 people have died on death row in the United States since 1976. Roughly 1,666 of those deaths were executions. The remaining thousand-plus died of natural causes, suicide, or other non-execution causes while their appeals were still working through the courts. The gap between those two numbers keeps widening as the average stay under a death sentence stretches past two decades and the population ages behind bars.
Executions Since 1976
The modern era of capital punishment began with the Supreme Court’s 1976 decision in Gregg v. Georgia, which ended a four-year moratorium and required states to use a split trial process: first determine guilt, then hold a separate proceeding to decide the sentence. Executions resumed in 1977, and since then approximately 1,666 people have been put to death.
The late 1990s were the peak. In 1999, twenty states executed 98 people, the highest single-year total in the modern era.1Bureau of Justice Statistics. Capital Punishment, 1999 The pace dropped sharply over the next two decades. By 2023, just five states carried out a combined 24 executions.2Bureau of Justice Statistics. Capital Punishment, 2023 – Statistical Tables The numbers ticked back up slightly in 2024 with 25 executions and 2025 with at least 27 in the first seven months, but the overall trend since 1999 has been downward.
Several forces drive the decline. Fewer juries are imposing death sentences in the first place. Twenty-three states have abolished capital punishment entirely, and four more have executive moratoriums blocking executions. Public support, while still above 50%, has dropped from the overwhelming majorities recorded in the 1990s. Pharmaceutical companies increasingly refuse to supply lethal injection drugs, forcing states to either find alternative sources or adopt untested execution methods.
Deaths From Causes Other Than Execution
A large share of people sentenced to death never reach the execution chamber. They die of heart disease, cancer, respiratory failure, or other age-related illnesses while their appeals are still pending. Cumulative data from Bureau of Justice Statistics reports shows that well over a thousand people have died of non-execution causes while under a death sentence since the late 1970s. In many recent years, the number of people dying of natural causes on death row has rivaled or exceeded the number actually executed.
Suicide is another persistent reality. Research covering 1977 through 2010 found an average of roughly three suicides per year among death row inmates, translating to a rate of about 130 per 100,000. That is far higher than the general prison population. The combination of extreme isolation, decades of uncertainty, and the psychological weight of a pending execution creates conditions that corrections officials have struggled to manage.
The medical picture is grim for those who survive long enough to age in place. Incarcerated people age physiologically faster than the general population, often presenting health profiles seven to ten years older than their actual age. Elderly prisoners cost roughly $70,000 per year to house and treat, two to three times more than younger inmates, largely because of the expense of transporting them under armed guard to outside medical facilities. When someone on death row develops terminal cancer or advanced dementia, the state ends up providing end-of-life care to a person it simultaneously intends to execute.
Why the Gap Keeps Growing
The wait between sentencing and execution has tripled since the mid-1980s. People executed in 1984 and 1985 had spent an average of about six to six-and-a-half years on death row.3Bureau of Justice Statistics. Capital Punishment, 1985 By 2020, that average had grown to 18.9 years, and by 2021 it reached 19.4 years.4Bureau of Justice Statistics. Capital Punishment, 2020 – Statistical Tables Current averages hover around 20 years.
The expansion is almost entirely driven by the appeals process. After a death sentence, the case goes through automatic state appeal, then state post-conviction review where defendants can raise issues outside the trial record like ineffective legal representation or newly discovered evidence. If those fail, a federal habeas corpus petition allows a federal court to examine whether the state conviction violated the defendant’s constitutional rights.5Office of the Law Revision Counsel. 28 USC 2254 – State Custody; Remedies in Federal Courts Each stage can take years, and many cases cycle through multiple rounds of review.
Those protections exist to catch mistakes. The practical result is that death row has become a place where people spend the best decades of their adult lives in conditions far more restrictive than general population housing. Twenty years of solitary or near-solitary confinement, followed by either execution or death from illness, is the reality for most people sentenced to die in the modern era. The longer the average stay, the larger the share of the death row population that dies of something other than execution.
People Who Left Death Row Alive
Not everyone who leaves death row leaves in a coffin. At least 202 people sentenced to death in the United States since 1973 have been fully exonerated, cleared of all charges related to the conviction that put them there.6Death Penalty Information Center. Innocence That works out to roughly one exoneration for every eight executions.
Exonerations happen for different reasons: DNA evidence that was not available at trial, recanted witness testimony, proof of prosecutorial misconduct, or another person confessing to the crime. What they share is a timeline. Most exonerated death row inmates spent years or decades in confinement before the truth came out. These are only the cases where innocence was proven; there is no way to audit the convictions of people already executed.
Clemency accounts for a much smaller share of exits. Governors and presidents have the power to commute a death sentence to life in prison, but they rarely use it. Out of the nearly 10,000 people sentenced to death since 1972, only 86 have received individual clemency, less than one percent. Eleven states that still have the death penalty have never granted a single clemency in the modern era. Over half of all individual clemency grants were issued when the governor was not running for reelection, and that figure rises to nearly 85% in states where the governor has sole clemency authority. Only four people have ever received clemency from a governor actively campaigning for another term.
Mass commutations change the picture occasionally. In December 2024, President Biden commuted 37 of the 40 federal death sentences, leaving only three people on federal death row. Those 37 are now counted among the people who left death row alive without ever being executed, part of the thousand-plus whose sentences ended by something other than lethal injection.