About 48% of American adults have high blood pressure, a figure that has held relatively steady over the past decade. That translates to roughly 120 million people. The number comes from national health surveys using the current definition of hypertension: a systolic (top number) reading of 130 or higher, a diastolic (bottom number) of 80 or higher, or currently taking blood pressure medication. Despite how common it is, only about 1 in 4 people with high blood pressure actually have it under control.
How High Blood Pressure Is Defined Now
The threshold changed in 2017 when the American Heart Association and American College of Cardiology updated their guidelines. Before that, high blood pressure started at 140/90. The new categories are:
- Stage 1 hypertension: 130–139 systolic or 80–89 diastolic
- Stage 2 hypertension: 140 or higher systolic, or 90 or higher diastolic
That shift from 140/90 to 130/80 reclassified millions of Americans as having high blood pressure overnight. If you’ve seen older statistics citing a lower prevalence (around 32%), those typically use the previous cutoff or count only people who’ve been formally diagnosed. The ~48% figure captures everyone whose readings meet the current threshold, whether or not they know it.
Prevalence by Age
Age is the single biggest predictor. Among adults 18 to 39, about 22% have high blood pressure. That jumps to nearly 55% for people in their 40s and 50s, and reaches roughly 75% for adults 60 and older. By the time you’re in your 60s, having normal blood pressure is the exception rather than the rule.
The gap between men and women is significant in younger adults. Among 18- to 39-year-olds, 31% of men have high blood pressure compared to just 13% of women. That gap narrows through middle age (59% vs. 50% in the 40–59 range) and essentially disappears after 60, when men and women reach similar rates of about 74–75%.
Prevalence by Race and Ethnicity
Black Americans have the highest rates of any racial or ethnic group in the U.S., and it’s not close. Nearly 59% of Black adults have high blood pressure, compared to about 46% of Asian adults, 45% of White adults, and 43% of Mexican American adults. These are age-adjusted numbers, meaning the differences reflect something beyond just having an older or younger population.
The reasons behind these disparities are complex and layered. They include higher rates of risk factors like sodium sensitivity, less access to consistent healthcare, higher levels of chronic stress tied to socioeconomic factors and discrimination, and lower rates of blood pressure control even after diagnosis. Black adults also develop high blood pressure earlier in life on average, which compounds the damage over time.
The Control Problem
Having high blood pressure is one thing. Managing it is another, and the U.S. is not doing well on this front. Only about 1 in 4 adults with hypertension have their blood pressure under control (below 130/80). More recent data from 2021–2023 puts the control rate even lower, at about 21%. That means roughly 4 out of 5 Americans with high blood pressure are walking around with readings that increase their risk of heart attack, stroke, kidney disease, and dementia.
Control rates have actually gotten worse in recent years. Between 2013 and 2023, the overall prevalence of hypertension stayed flat at around 32–33% (using the clinical diagnosis measure), but the percentage of those people keeping it managed has dropped. Some of this decline may be linked to disruptions in routine healthcare during the pandemic, when many people missed checkups and fell out of medication routines. But the trend predates 2020, suggesting deeper systemic issues with how blood pressure is monitored and treated long-term.
The Financial Toll
High blood pressure cost the U.S. an estimated $219 billion in 2019. That includes direct medical spending and lost productivity. On an individual level, people with high blood pressure spend about $2,800 more per year on healthcare than people without it. Among privately insured adults, that gap is closer to $2,900. These costs accumulate over decades because hypertension is a chronic condition that, once it develops, rarely goes away entirely.
Why So Many People Don’t Know
High blood pressure has no symptoms in most cases. You can have a reading of 150/95 and feel perfectly fine for years. This is why it’s called a “silent” condition, and it’s the main reason awareness remains a problem. Many Americans only discover their blood pressure is elevated during an unrelated doctor’s visit, and people who don’t see a doctor regularly may go years without a single reading.
If you haven’t had your blood pressure checked in the past year, the number that matters most is your own. Pharmacy blood pressure machines, home monitors, and annual physicals all provide readings accurate enough to flag a problem. A single high reading doesn’t mean you have hypertension, since blood pressure fluctuates throughout the day, but consistently elevated numbers across multiple readings are the signal that something needs to change.