Roughly 1 in 9 Americans live with a diabetes diagnosis today, according to recent CDC data.6% of the entire population, which translates to about 38.4 million people living with the condition right now in the United States. That figure climbs higher once you add the millions more whose blood sugar runs elevated but has not crossed the diagnostic line.
Diabetes has quietly become one of the most common chronic conditions in the country, reshaping how doctors, employers, and families think about long-term health.
You will find the headline figure broken down by diagnosed and undiagnosed cases, a type-by-type split, and a clear look at where the burden falls heaviest across age, race, and geography. Trends from the past two decades and where current trajectories point next are also covered in plain terms.
The Headline Number and What It Represents
Roughly 38.4 million Americans carry a diabetes diagnosis or meet the clinical criteria for one, putting the national prevalence rate at about 11.6% of the U.S. population. The most comprehensive population-level accounting of the disease available comes from the Centers for Disease Control and Prevention’s National Diabetes Statistics Report. That report counts everyone: children, working-age adults, and seniors, whether their condition has been formally labeled or detected only through blood work.
The 11.6% rate includes both diagnosed cases and the millions of people whose diabetes has never been formally identified. Among adults specifically, about 1 in 10 carries a confirmed diabetes diagnosis, a ratio that has climbed steadily since the late 1990s. Diabetes now ranks as the 8th leading cause of death in the United States, a ranking that gives the percentage real weight beyond a simple statistic.
How That Percentage Translates to Raw Numbers
Working backward from 11.6% and a U.S. population north of 330 million, the math lands near 38.4 million people. Children and adolescents account for roughly 350,000 of those cases, mostly Type 1 diabetes, while adults make up the overwhelming remainder. The number grows every year as new cases are diagnosed and as the underlying population expands.
Whether caught early or missed entirely, those cases reshape what the headline number actually tells us.
| Group | Estimated Population Affected | Share of U.S. Population |
|---|---|---|
| Total Americans with diabetes | ~38.4 million | ~11.6% |
| Diagnosed diabetes (all ages) | ~29.7 million | ~8.9% |
| Undiagnosed diabetes (adults) | ~8.5 million | ~2.6% |
| Children/adolescents with diabetes | ~350,000 | ~0.1% |
Diagnosed Versus Undiagnosed Cases Across the Country
About 29.7 million Americans have received a formal diabetes diagnosis from a healthcare provider, while an additional 8.5 million adults live with the disease without knowing it. That undiagnosed gap represents nearly 1 in 4 people who meet the medical criteria for diabetes but have never heard it from a doctor. The split matters because it tells you how many cases are being actively managed versus silently progressing.
Undiagnosed cases are detected through laboratory testing, not through symptoms alone. A fasting plasma glucose test or an A1C blood test at or above 6.5% confirms the diagnosis regardless of how someone feels. Adults without regular access to primary care, those without insurance, and people who skip routine bloodwork make up the majority of that undiagnosed pool.
Why the Undiagnosed Gap Exists
Several factors push the undiagnosed count upward:
- Skipped checkups: roughly 1 in 4 Americans skips the routine visits that would normally catch elevated blood sugar.
- Silent early stage: early Type 2 diabetes often produces no obvious symptoms, so people can live with it for years before anything feels wrong.
- No A1C testing: without regular A1C screening, the condition stays invisible until a complication forces a medical visit.
- Access barriers: insurance gaps and limited primary care access keep screening rates low in many communities.
The Centers for Disease Control and Prevention (CDC) estimates that around 8.5 million U.S. adults meet the lab criteria for diabetes but have never been told by a clinician. Closing that gap starts with a simple blood test during a routine physical.
Type 1 and Type 2 Diabetes in the U.S. Population
Type 2 diabetes drives about 90% to 95% of all U.S. cases, dwarfing the share from Type 1.S. diabetes cases, making it the dominant form by a wide margin. Type 1 diabetes represents about 5% to 10% of cases and is typically diagnosed earlier in life, often in childhood or young adulthood. Gestational diabetes adds another layer, affecting roughly 2% to 10% of pregnancies each year, though it often resolves after delivery.
The type breakdown shapes everything from medication choices to long-term complication risks. Type 2 diabetes is closely tied to insulin resistance, weight, and lifestyle factors, while Type 1 diabetes is an autoimmune condition where the body stops producing insulin altogether. Body Mass Index (BMI), family history, and physical activity level all feed into Type 2 risk in ways that do not apply to Type 1. Knowing which form is in front of you changes the entire management approach.
Type-Specific Numbers and Caveats
Counting Type 1 versus Type 2 cases comes with data limitations. National surveys sometimes rely on self-reports, which can misclassify adults diagnosed late in life. Registry data captures the two forms unevenly, and adults with atypical presentations sometimes get a generic “diabetes” label without a confirmed subtype. Despite those gaps, the 90/5 split has held remarkably steady across multiple CDC reports and aligns with guidance from the American Diabetes Association (ADA).
That steady split depends heavily on which subtype sits underneath it.
Prediabetes and the Larger Blood Sugar Problem
Nearly 98 million U.S. adults, about 1 in 3, have prediabetes, a condition where blood sugar runs elevated but has not crossed the diabetes threshold. Prediabetes is defined by an A1C between 5.7% and 6.4% or equivalent fasting glucose readings. It signals a body struggling with glucose control long before full diabetes takes hold.
Roughly 80% of people with prediabetes are unaware they have it, mirroring the awareness gap seen in undiagnosed diabetes. The condition often produces no symptoms at all, so most cases surface only through routine bloodwork. Without intervention, about 5% to 10% of people with prediabetes progress to full diabetes each year.
Why Prediabetes Gets Confused With Diabetes
The two conditions sit on the same spectrum, which causes frequent mix-ups in headlines and casual conversation. Conflating prediabetes with diabetes inflates the apparent scale of the problem and confuses anyone trying to understand their own risk.
Prediabetes is a warning sign, not a diagnosis of diabetes. Treating the two as interchangeable inflates real prevalence figures and obscures who actually needs clinical follow-up.
Who Carries the Heaviest Burden by Age and Demographics
Diabetes prevalence climbs sharply with age, reaching roughly 29% among adults 65 and older. That means nearly 1 in 3 seniors lives with the condition. American Indian and Alaska Native adults hold the highest diagnosed diabetes rate of any racial or ethnic group in the country, with non-Hispanic Black and Hispanic adults also posting rates notably above the national average. Non-Hispanic White adults fall closer to the overall figure.
Lower educational attainment, lower household income, and certain Southern regions consistently post higher-than-average rates. The pattern reflects a mix of food access, healthcare access, genetics, and chronic stress load. Understanding where the burden concentrates helps explain why national averages tell only part of the story.
| Group | Approximate Diabetes Prevalence |
|---|---|
| Adults 65 and older | ~29% |
| American Indian / Alaska Native adults | Highest of any group |
| Non-Hispanic Black adults | Above national average |
| Hispanic adults | Above national average |
| Non-Hispanic White adults | Closer to national average |
| Lower-income households | Higher than higher-income peers |
Geographic and Socioeconomic Patterns
Diabetes prevalence peaks in parts of the Southeast, the Mississippi Delta, and Appalachia. Counties with higher poverty rates, fewer primary care providers, and limited access to fresh food consistently rank at the top. Education level tracks closely with prevalence, partly because higher education often correlates with better health literacy and steadier employment-based insurance.
How the Percentage Has Shifted Over Time and Where It Is Headed
U.S. diabetes prevalence has roughly doubled over the past two decades, driven largely by rising Type 2 cases. Better detection accounts for some of the climb, but rising obesity and an aging population explain most of it. Projections suggest the total number of Americans with diabetes could exceed 50 million within a generation if current trends hold.
Comparing figures across years requires careful attention to methodology. The CDC, the ADA, and the National Health Interview Survey each measure prevalence slightly differently. Self-reported surveys tend to undercount because they miss undiagnosed cases, while biomarker-based surveys like NHANES catch the full picture through actual blood tests.
Why Trend Lines Sometimes Disagree
Methodology differences between self-reported surveys like NHIS and biomarker-based surveys like NHANES explain many apparent discrepancies in trend lines. NHIS asks people whether a doctor has told them they have diabetes, so it counts only diagnosed cases. NHANES draws blood and measures A1C directly, picking up the undiagnosed pool that NHIS misses. Mixing numbers from both sources without labeling them creates confusion about whether prevalence is rising faster than it actually is.
Bottom Line
The most reliable current figure puts U.S. diabetes prevalence at about 11.6%, or roughly 38.4 million people, with Type 2 diabetes driving the bulk of that total. Undiagnosed cases add another 8.5 million adults to the picture, while prediabetes affects nearly 1 in 3 adults beyond the headline count. Rates climb with age, hit certain racial and ethnic communities harder, and have roughly doubled over the past 20 years.
Knowing exactly which denominator sits behind each percentage is what separates a useful statistic from a misleading one.
FAQ
What percentage of Americans have diabetes today?
About 11.6% of the U.S. population, or roughly 38.4 million people, currently live with diabetes, according to the CDC’s National Diabetes Statistics Report. That figure combines diagnosed and undiagnosed cases across all ages.
How many people in the US have diabetes?
Approximately 38.4 million Americans, including about 29.7 million with a formal diagnosis and an estimated 8.5 million adults whose diabetes has not been clinically identified.
What is the current diabetes rate in the United States?
The national diabetes rate stands at roughly 11.6% of the total population, or about 1 in 10 adults when restricted to diagnosed cases. Among adults 65 and older, the rate climbs to around 29%.
How has diabetes prevalence in America changed over time?
U.S. diabetes prevalence has roughly doubled over the past two decades, driven mainly by rising Type 2 cases tied to obesity and population aging. Without intervention, projections point past 50 million cases within a generation.
What percentage of Americans have prediabetes?
Nearly 98 million U.S. adults, about 1 in 3, have prediabetes based on an A1C between 5.7% and 6.4%. Roughly 80% of those individuals are unaware of their elevated blood sugar status.
Which group has the highest diabetes rate in the US?
American Indian and Alaska Native adults post the highest diagnosed diabetes rate of any racial or ethnic group in the country. Non-Hispanic Black and Hispanic adults also carry rates notably above the national average.
