Roughly 45% of American adults have high blood pressure, a figure that translates to well over 100 million people. That percentage, drawn from national health surveys, makes hypertension one of the most common chronic conditions in the country and a major driver of heart disease and stroke.
The Numbers by Age and Sex
High blood pressure is not evenly distributed across the population. Among adults aged 18 to 39, about 22% have it. That jumps to nearly 55% for those aged 40 to 59, and by age 60 and older, roughly three out of four adults are affected.
Men are more likely than women to have high blood pressure in younger age groups. Between ages 18 and 39, 31% of men have it compared to 13% of women. That gap narrows through middle age, and by 60 it essentially disappears, with both sexes hovering around 74 to 75%.
Racial and Ethnic Disparities
Black Americans carry a disproportionate burden. According to CDC data from 2021 to 2023, 58% of non-Hispanic Black adults had hypertension, compared to the overall adult rate of 44.5%. This gap persists even after adjusting for age differences between groups, and it contributes to higher rates of stroke, kidney disease, and heart failure in Black communities. The reasons are complex, involving a mix of genetics, chronic stress, access to healthcare, and dietary factors shaped by neighborhood and income.
Teens Are Affected Too
High blood pressure isn’t limited to adults. Among U.S. teens aged 12 to 19, about 4% meet the clinical definition for hypertension, which translates to roughly 1.3 million young people. When you include those with blood pressure readings above normal but not yet in the hypertension range, the number rises to about one in seven. Rising rates of childhood obesity are a key factor, and elevated blood pressure in adolescence tends to track into adulthood.
What Counts as High Blood Pressure
The American Heart Association defines normal blood pressure as below 120/80. The categories above that are:
- Elevated: Top number between 120 and 129, bottom number still below 80
- Stage 1 hypertension: Top number between 130 and 139, or bottom number between 80 and 89
- Stage 2 hypertension: Top number 140 or higher, or bottom number 90 or higher
These thresholds were lowered in 2017 from the previous cutoff of 140/90. That single change reclassified millions of Americans from “normal” to “hypertensive” overnight. It’s worth understanding this context when you see prevalence numbers, because the definition itself shapes how large the affected population appears. The lower threshold was adopted because research showed cardiovascular risk begins climbing well before blood pressure reaches 140/90.
Most People Don’t Have It Under Control
Perhaps the most striking statistic isn’t how many Americans have high blood pressure. It’s how few are managing it. Among adults with hypertension, only about 59% are even aware they have it. And just one in five, roughly 21%, actually have their blood pressure controlled to below 130/80.
That means the vast majority of people with hypertension are walking around with readings that are silently damaging their blood vessels, heart, kidneys, and brain. High blood pressure rarely causes noticeable symptoms until something serious happens, which is why it’s often called a “silent” condition. You can have dangerously high readings for years and feel perfectly fine.
The U.S. Preventive Services Task Force recommends that all adults 18 and older get screened. If you’re 40 or older, or at increased risk due to factors like weight, family history, or race, yearly screening is advised. For lower-risk adults under 40, less frequent checks are considered reasonable, though many doctors still measure blood pressure at every office visit.
The Financial Cost
Hypertension cost the U.S. an estimated $219 billion in 2019. On an individual level, people with high blood pressure spend about $2,800 more per year on medical care than people without it. A 2021 analysis of privately insured adults put the gap even higher, at roughly $2,900 per year. These costs come from more frequent doctor visits, medications, and the expensive downstream consequences: hospitalizations for heart attacks, strokes, kidney failure, and heart failure.
Why the Numbers Keep Climbing
Several forces push hypertension rates upward. The American diet is heavy on sodium, with most of it coming not from the salt shaker but from processed and restaurant foods. Physical inactivity, rising obesity rates, and chronic stress all raise blood pressure over time. An aging population amplifies the trend, since blood vessels naturally stiffen with age, making hypertension nearly inevitable for many older adults without active prevention.
Alcohol consumption, poor sleep, and smoking also contribute. For some people, genetics play a strong role, meaning high blood pressure develops even with a relatively healthy lifestyle. The condition tends to run in families, and certain genetic profiles respond more strongly to dietary sodium. None of these risk factors operate in isolation. They interact, which is why hypertension is so common across nearly every demographic group in the country.