57,044 members of the World Trade Center Health Program have had a cancer certified as 9/11-related as of June 30, 2026, split almost evenly between 28,131 responders and 28,913 survivors. More people have now died from 9/11-related illnesses, over 8,000, than were killed in the attacks themselves.
9/11 Cancer in America 2026 – Introduction
9/11 cancer statistics released around the 25th anniversary of the attacks confirm what physicians treating responders and survivors have warned for years: the health toll from September 11, 2001 keeps growing a quarter century later. The World Trade Center Health Program, the federally funded system that provides free medical monitoring and treatment to people exposed to the toxic dust, smoke, and debris at Ground Zero, now counts 57,044 members who have had cancer certified as connected to that exposure, according to the program’s quarterly summary published in August 2026 with data through June 30 of this year.
This report breaks down 9/11 cancer statistics in US 2026 across every dimension available in current federal data: total enrollment in the WTC Health Program, cancer case counts and the most common cancer types diagnosed, mortality figures, non-cancer conditions tracked alongside cancer, health-system-level trends, and the funding questions now facing the program’s future. The story these numbers tell is not one of a crisis that peaked and faded. Cancer certifications have accelerated sharply in just the past few years, and the program’s own physicians describe a slow-motion health disaster still very much in progress among the responders and survivors who lived through that day.
Interesting Facts About 9/11 Cancer in 2026
| Statistic | 2026 Data |
|---|---|
| Total Cancer Certifications (Lifetime, WTC Program) | 57,044 members |
| Responder Cancer Certifications | 28,131 |
| Survivor Cancer Certifications | 28,913 |
| WTC Health Program Total Enrollment | ~144,000-145,000 members |
| First Responders Enrolled | 56,299 |
| NY-Based Survivors Enrolled | 38,984 |
| Total Deaths Among Enrolled Members | More than 8,000 |
| Original Attack Death Toll (All Sites) | 2,977 |
| First Responders Who Died on 9/11 Itself | 412 |
| People Exposed to Toxic Contaminants (CDC Estimate) | ~400,000 |
| Most Common Cancer Types | Skin and prostate cancer |
| New Cancer Certifications, Past 12 Months | More than 10,000 |
| Program Authorized Through | 2090 |
Data Source: World Trade Center Health Program Quarterly Data (June 30, 2026), Centers for Disease Control and Prevention
The numbers above capture a health program still absorbing new cases at a pace that has surprised even the physicians who run it. Cancer certifications climbed past 57,044 as of mid-2026, split almost evenly between the 28,131 responders who worked rescue and recovery operations and the 28,913 survivors who lived, worked, or attended school in the disaster area. That near-even split reflects a truth that took years for public health officials to fully recognize: toxic exposure from the collapse didn’t stop at the edge of Ground Zero, and civilians who breathed the same air in the surrounding blocks now make up roughly half of all certified cancer cases in the program.
What makes the 2026 data especially sobering is the death toll comparison. More than 8,000 members of the WTC Health Program have died since the program began tracking enrollees, a figure that now exceeds the 2,977 people killed in the attacks themselves across all three sites. Cancer has become the single most frequently certified condition in the program over the past year, ahead of long-standing respiratory and digestive complaints like acid reflux and chronic sinus inflammation, a shift that underscores how the program’s health burden has evolved from acute respiratory injury in the years immediately after 2001 toward long-latency cancers now emerging two and a half decades later.
WTC Health Program Enrollment Statistics 2026
WTC Health Program Enrollment Growth (2011-2026)
2011 |███████████████ 60,000 (program launch year)
2021 |██████████████████████████ 111,000
2025 |████████████████████████████████ 130,000
2026 |███████████████████████████████████ 144,000
| Metric | Value |
|---|---|
| Total Enrollment (June 30, 2026) | ~144,000-145,000 |
| First Responders Enrolled | 56,299 |
| NY-Based Survivors Enrolled | 38,984 |
| New Enrollees, Q1 2026 | 2,096 |
| New Enrollees, Q2 2026 | 2,180 |
| New Enrollees, Full Year 2025 | ~10,200 (3,300 responders + 6,900 survivors) |
| Program Authorization Period | 2011 to 2090 |
Data Source: World Trade Center Health Program Quarterly Data Summary, CDC, ABC News Reporting (September 2026)
WTC Health Program enrollment continues expanding a quarter century after the attacks, a fact that surprises many people who assume registration would have tapered off by now. As of June 30, 2026, roughly 144,000 people were enrolled nationally, including 56,299 first responders and 38,984 survivors based in the New York metro area alone, with smaller pockets of enrollees scattered across the country, including states as far from Ground Zero as Missouri. The program added 2,096 new members in the first quarter of 2026 and 2,180 in the second quarter, continuing a pace of growth that has held steady since 2025, when roughly 10,200 new responders and survivors enrolled over the full year.
That continued growth reflects two overlapping trends: people who were exposed in 2001 but are only now developing symptoms severe enough to seek certification, and a survivor category, covering people who lived, worked, or attended school in the disaster area rather than those who physically responded, that has become the larger source of new applications. Enrollment remains open a quarter century later, and the most common reason applications stall is documentation, with more than 2,500 survivor applications and over 1,600 responder applications suspended in the past year alone for insufficient proof of presence in the disaster area during the qualifying period.
Total 9/11-Related Cancer Cases 2026
WTC Health Program Cancer Certifications (Lifetime, through 2026)
2013-2022 (First Decade) |██████████ 1,634 (Northwell only)
Total, All-Time (Program-Wide) |█████████████████████████████ 57,044
| Metric | Value |
|---|---|
| Total Cancer Certifications (Program-Wide) | 57,044 |
| Responder Cancer Certifications | 28,131 |
| Survivor Cancer Certifications | 28,913 |
| New Cancer Certifications, Past 12 Months | More than 10,000 |
| Cancer as Most-Certified Condition (Past Year) | Yes, by a wide margin |
| People Reported to Have 9/11-Related Cancer (Sept 2025) | Nearly 50,000 |
Data Source: World Trade Center Health Program Quarterly Summary (August 2026), Senator Kirsten Gillibrand Press Office
The total number of 9/11-related cancer cases has grown from nearly 50,000 people in September 2025 to 57,044 by June 2026, a jump of roughly 7,000 certified cases in under a year. Cancer certification in this context means a program physician has determined that 9/11 exposure was substantially likely to be a significant factor in causing or contributing to the disease, a distinction the program draws carefully from a general cancer diagnosis, since certification is what makes treatment eligible for coverage. Cancer has now become the single most frequently certified condition of any kind in the program over the past 12 months, outpacing longtime leaders like acid reflux and chronic sinus inflammation by a wide margin.
The scale of this growth becomes clearer when set against historical figures. During the program’s first full decade, from 2013 to 2022, one major health system, Northwell Health, recorded just 1,634 total cancer cases among its enrollees. In the 42 months since then, that same single health system alone recorded 811 new cancer cases, meaning the pace of new diagnoses at Northwell has roughly tripled compared to the program’s earlier years, a trend mirrored across the program’s other six federally funded treatment networks in the New York metro area and beyond.
Most Common 9/11-Related Cancer Types 2026
Most Certified Cancer Types Among WTC Health Program Members
Prostate & Skin Cancer |█████████████████████████████████ Most common
Breast Cancer |████████████████████ Common
Urinary Tract Cancer |███████████████ Common
Rare Cancers (multiple types) |██████ Notable share
| Cancer Type | Program Ranking |
|---|---|
| Prostate Cancer | Most common |
| Skin Cancer | Most common (tied) |
| Breast Cancer | Frequently certified |
| Urinary Tract Cancer | Frequently certified |
| Rare Cancers | Eligible if incidence is under 15 per 100,000 annually |
Data Source: Northwell Health WTC Health Program Data (2026), World Trade Center Health Program Eligible Cancer List
Prostate and skin cancers rank as the most common cancer types certified across the WTC Health Program, followed closely by breast and urinary tract cancers, according to the most recent data reported by Northwell Health, one of the program’s seven federally funded New York Metro treatment providers. This pattern has held consistent for years and reflects both the demographics of the responder population, which skews heavily male and was largely middle-aged at the time of exposure, and the specific carcinogens present in the dust and debris that blanketed Lower Manhattan after the towers collapsed.
The program’s eligible cancer list also includes a wide range of rare cancers, formally defined as any cancer type occurring in fewer than 15 cases per 100,000 people annually in the general US population. This broad eligibility list exists because epidemiological research following the attacks found elevated cancer risk across an unusually wide range of cancer sites among exposed responders, not concentrated in just one or two organ systems the way many single-exposure health effects typically are. A 14-year follow-up study published in the Journal of the National Cancer Institute found that workers who arrived at the site earliest, on September 11 itself or in the days immediately following, faced the highest adjusted risk of developing cancer overall, with a particularly pronounced association for prostate and thyroid cancers among the earliest arrivals.
9/11 Cancer Deaths and Mortality Statistics 2026
| Metric | Value |
|---|---|
| WTC Health Program Enrollee Deaths (Cumulative) | More than 8,000 |
| Enrollee Deaths, March 2025 Snapshot | 8,215 (5,844 responders) |
| Original Attack Deaths (All Three Sites) | 2,977 |
| First Responders Killed on 9/11 Itself | 412 |
| Deaths Tracked, Include All Causes | Yes, program does not isolate 9/11-specific cause |
Data Source: CDC WTC Health Program Data, Governing Magazine (September 2026), 930 WFMD/CDC Reporting (March 2025)
Deaths among WTC Health Program enrollees have now surpassed the death toll from the original attacks themselves, a milestone public health officials describe soberly rather than with alarm, since it reflects the program’s steadily aging enrollee base as much as it reflects illness attributable to 9/11 exposure specifically. As of the most recent reporting in September 2026, more than 8,000 first responders and survivors suffering from illnesses tied to toxic exposure, including lung cancer, blood cancer, and respiratory disease, have died since the program began tracking its membership. An earlier snapshot from March 2025 put the figure at 8,215 total deaths, including 5,844 among responders specifically.
It’s important to note what this figure does and does not measure. The World Trade Center Health Program tracks deaths from all causes among its enrolled members, not specifically deaths the program has determined were caused by 9/11-related illness, meaning the total includes natural aging, accidents, and unrelated illness alongside deaths from certified WTC-related conditions. Even accounting for that distinction, the comparison to the 2,977 people killed across all three attack sites on September 11, 2001, itself, including the 412 first responders who died that morning, illustrates how the health consequences of the attacks have, in raw numbers, exceeded the immediate casualties by a significant margin over the past quarter century.
Non-Cancer 9/11-Related Health Conditions 2026
Lifetime Condition Certifications, WTC Health Program (through 2026)
Cancer |████████████████████████████████████████████████ 57,044
Chronic Sinusitis |█████████████████████████████████████ 42,372
Acid Reflux (GERD) |████████████████████████████████████ 39,190
Asthma |██████████████████████ 23,137
PTSD |██████████████ 18,321
| Condition | Lifetime Certifications |
|---|---|
| Cancer | 57,044 |
| Chronic Sinus Inflammation | 42,372 |
| Acid Reflux (GERD) | 39,190 |
| Asthma | 23,137 |
| Post-Traumatic Stress Disorder | 18,321 |
Data Source: World Trade Center Health Program Quarterly Summary (August 2026)
Cancer now outranks every other certified condition in the WTC Health Program’s lifetime totals, ahead of chronic sinus inflammation, acid reflux, asthma, and PTSD, the conditions that historically defined the program’s caseload in its earlier years. Roughly two-thirds of all enrollees have been certified for at least one WTC-related health condition, meaning the program’s disease burden extends well beyond cancer alone into a wide range of respiratory, digestive, and mental health effects tied to the same toxic exposure event.
The 18,321 lifetime PTSD certifications represent a meaningful share of the program’s mental health caseload, a burden that sits within the much larger national context explored in the PTSD Statistics in US report, which found that roughly 13 million Americans live with PTSD in any given year across all trauma types combined. What distinguishes the WTC Health Program’s PTSD population is the singular, catastrophic nature of the triggering event, witnessing or responding to a mass-casualty terrorist attack, a trauma category the broader PTSD literature identifies as carrying a substantial risk of chronic, long-lasting symptoms even decades after the initial exposure.
9/11 Cancer Cases by Health System 2026
Northwell Health WTC Program Cancer Cases (2023-2026)
2023 |████████████████ 177 cases
2025 |████████████████████████████ 235 cases
H1 2026 |███████████████ 132 cases (half-year pace)
All-Time (Northwell) |████████████████████████████████████████ 2,445 cases (1,489 people)
| Metric (Northwell Health System) | Value |
|---|---|
| New Cancer Cases, 2023 | 177 |
| New Cancer Cases, 2025 | 235 |
| New Cancer Cases, First Half of 2026 | 132 |
| Growth Rate, 2023 to 2025 | +75% |
| Total Cancer Cases (All-Time, Northwell) | 2,445 among 1,489 people |
| Members With Cancer History (Northwell) | 30% of all Northwell enrollees |
Data Source: Northwell Health WTC Health Program 25th Anniversary Data Release (September 2026)
Health-system-level data adds important texture to the program-wide totals, and Northwell Health’s WTC Health Program clinic in Rego Park, Queens, illustrates the trend clearly. New 9/11-certified cancer cases at Northwell grew from 177 in 2023 to 235 in 2025, a 75% jump in just three years, and the pace has continued into 2026, with 132 new cases recorded in just the first half of the year. That trajectory puts Northwell on pace to add roughly 250 to 270 new cancer cases for the full 2026 calendar year, which would represent another year-over-year increase, a pattern consistent with the broader trend documented in the U.S. Cancer Statistics report’s finding that adults aged 65 and older, the age bracket most WTC responders now occupy, represent more than 60% of all US cancer diagnoses.
Across its full enrollment, Northwell has now recorded 2,445 total cancer cases among 1,489 individual people, meaning many enrollees have been diagnosed with more than one primary cancer over the years. Roughly 30% of all Northwell enrollees have battled cancer at some point since the program began, and two-thirds carry at least one certified WTC-related condition of any kind. These figures come from just one of seven federally funded treatment networks serving the New York metro area, suggesting the true program-wide picture, already captured in the 57,044 total figure, reflects a genuinely national health burden concentrated most heavily, but not exclusively, in the New York region.
9/11-Related Lung and Respiratory Cancer Statistics 2026
Respiratory Exposure Context: WTC Program vs National Lung Cancer Burden
National US Lung Cancer Cases (2022) |████████████████████████████ 218,893
National US Lung Cancer Deaths (2023) |███████████████ 131,584
| Metric | Value |
|---|---|
| National US Lung Cancer Cases (2022) | 218,893 |
| National US Lung Cancer Deaths (2023) | 131,584 |
| People Exposed to WTC Toxic Dust/Smoke | ~400,000 |
| WTC Enrollees Reporting Persistent Respiratory Symptoms (Early Studies) | 30% to 40% |
| Firefighters on Permanent Respiratory Disability (Early Studies) | ~1,000 studied |
Data Source: Centers for Disease Control and Prevention, Early WTC Health Registry Studies
Lung and other respiratory cancers sit among the WTC Health Program’s certified conditions because of the sheer scale of airborne exposure at Ground Zero, where an estimated 400,000 people breathed in a toxic mixture of pulverized concrete, asbestos, glass fibers, heavy metals, and combustion byproducts in the days, weeks, and months following the collapse. Early studies of responders found that 30% to 40% reported persistent respiratory symptoms years after exposure, and lung function testing on a sample of roughly 5,000 rescue workers found that not a single one tested had entirely normal lung function, a striking finding that helped establish the medical basis for the program’s later cancer coverage expansion.
Nationally, lung cancer remains one of the most lethal cancers tracked by US public health agencies, with 218,893 new cases diagnosed in 2022 and 131,584 deaths recorded in 2023, according to CDC surveillance data, a burden examined in far greater depth in the Lung Cancer Statistics in the U.S. report, which found that roughly 44.4% of all US lung cancer cases are still diagnosed only after the disease has already spread to distant organs. Within the WTC Health Program specifically, respiratory and thoracic cancers form a meaningful share of the broader cancer caseload, though prostate and skin cancers remain more numerous overall, a pattern researchers attribute partly to the long latency period for many respiratory cancers, meaning the full lung cancer burden from 2001 exposure may still be emerging even now, a quarter century later, as more responders and survivors reach the age ranges where lung cancer typically presents.
WTC Health Program Funding and Future Outlook 2026
| Metric | Status |
|---|---|
| Program Legal Authorization | Through 2090 |
| Funding Adequacy Warning Issued | September 2025 |
| Risk Without Full Congressional Funding | Reduced access by 2028 |
| Members Enrolled Despite Funding Uncertainty | Growing every quarter |
| Independent Research Finding | Membership linked to lower mortality risk |
Data Source: Senator Kirsten Gillibrand Press Office, CDC/WTC Health Program Research (March 2026)
Although the WTC Health Program is legally authorized through 2090, a permanence Congress built into the James Zadroga 9/11 Health and Compensation Act specifically to spare responders and survivors from recurring political battles over reauthorization, the separate question of annual funding levels remains a live concern. Ahead of the 24th anniversary in September 2025, Senator Kirsten Gillibrand warned that without full congressional funding, the program would have to start turning away first responders and survivors and cutting back access to care by 2028, a warning that has continued to shape budget discussions heading into the 25th anniversary year.
Amid these funding pressures, at least one piece of encouraging research emerged in 2026. A study published in the Annals of Epidemiology in March, examining health outcomes for more than 28,000 responders from 2001 through 2020, found that membership in the WTC Health Program itself was associated with a lower risk of death, even after accounting for existing health conditions, suggesting that the free monitoring and treatment the program provides genuinely extends members’ lives. That finding adds weight to advocates’ argument that maintaining full funding is not simply a matter of honoring a commitment to 9/11 responders and survivors, but a measurable public health intervention with demonstrated life-saving value.
Frequently Asked Questions
How many people have 9/11-related cancer in 2026? As of June 30, 2026, 57,044 members of the World Trade Center Health Program have had a cancer certified as connected to 9/11 exposure.
How many WTC Health Program members have died? More than 8,000 members have died since the program began, exceeding the 2,977 people killed in the original attacks across all three sites.
What are the most common 9/11-related cancers? Prostate and skin cancer rank as the most commonly certified cancer types, followed by breast and urinary tract cancers.
How many people are enrolled in the WTC Health Program? Approximately 144,000 to 145,000 people are enrolled nationally as of mid-2026, including 56,299 first responders and 38,984 New York-based survivors.
Is 9/11 cancer certification growing or slowing down? It is accelerating. Cancer certifications grew from nearly 50,000 in September 2025 to 57,044 by June 2026, and cancer is now the most frequently certified condition in the program.
Are survivors affected as much as first responders? Yes. Survivor cancer certifications, at 28,913, now slightly exceed responder certifications at 28,131, confirming that civilian exposure in the surrounding area caused comparable cancer risk to direct rescue and recovery work.
How long is the WTC Health Program funded? The program is legally authorized through 2090, though advocates have warned that insufficient annual funding could force reduced access to care as soon as 2028.
Does the WTC Health Program cover PTSD and mental health conditions? Yes. 18,321 members have been certified for PTSD over the program’s lifetime, alongside cancer and a range of respiratory and digestive conditions.
What percentage of WTC Health Program members have any certified condition? Roughly two-thirds of all enrollees have been certified for at least one WTC-related health condition.
Does WTC Health Program membership affect life expectancy? A 2026 study found that program membership was associated with a lower risk of death among 9/11 responders, even after adjusting for existing health conditions.
Disclaimer: This research report is compiled from publicly available CDC, World Trade Center Health Program, and journalistic sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty is given as to the completeness or reliability of the information presented. Anyone who was present in the New York disaster area, at the Pentagon, or in Shanksville, Pennsylvania during the qualifying period and has health concerns is encouraged to contact the World Trade Center Health Program directly to determine eligibility. We are not liable for any financial loss, errors, or damages of any kind that may result from the use of the information herein. We acknowledge that though we try to report accurately, we cannot verify the absolute facts of everything that has been represented.
