A normal adult blood pressure is less than 120/80 mm Hg. In practice, the actual average among U.S. adults tends to run slightly higher than that ideal target. National survey data from the CDC shows that mean blood pressure for men aged 18 to 39 is about 119/70, rising to 133/69 by age 60 and older. For women in the same age groups, the average goes from 110/68 up to 139/68. So while “normal” is defined as under 120/80, what’s typical in the population depends heavily on your age and sex.
What the Two Numbers Mean
Blood pressure is written as two numbers, like 118/76. The top number (systolic) is the peak pressure in your arteries when your heart contracts and pushes blood out. The bottom number (diastolic) is the lowest pressure between beats, when your heart is refilling. The gap between the two numbers, called pulse pressure, normally falls between 40 and 50 points.
Both numbers matter, but they shift differently as you age. Systolic pressure tends to climb steadily over the decades as arteries stiffen. Diastolic pressure often rises through middle age and then actually drops after 60, which is why older adults frequently have a wider gap between their two numbers.
Average Blood Pressure by Age and Sex
These averages come from the CDC’s National Health and Nutrition Examination Survey, which measures blood pressure in a large, representative sample of the U.S. population.
Men
- Ages 18 to 39: 119/70 mm Hg
- Ages 40 to 59: 124/77 mm Hg
- Age 60 and older: 133/69 mm Hg
Women
- Ages 18 to 39: 110/68 mm Hg
- Ages 40 to 59: 122/74 mm Hg
- Age 60 and older: 139/68 mm Hg
Women generally have lower blood pressure than men through young adulthood, but the gap narrows after menopause. By age 60, women’s average systolic pressure actually exceeds men’s. Notice that diastolic pressure drops in both sexes after 60, even as systolic pressure keeps climbing. This pattern reflects the gradual stiffening of large arteries with age.
Blood Pressure Categories
The American Heart Association and American College of Cardiology classify adult blood pressure into four categories. The 2025 guidelines confirmed these same thresholds:
- Normal: systolic below 120 and diastolic below 80
- Elevated: systolic 120 to 129 with diastolic still below 80
- Stage 1 hypertension: systolic 130 to 139 or diastolic 80 to 89
- Stage 2 hypertension: systolic 140 or higher, or diastolic 90 or higher
Only one number needs to be in the higher range for you to fall into that category. So a reading of 138/72 counts as Stage 1 hypertension even though the diastolic number looks fine. Readings at or above 180/120 are considered a hypertensive crisis, which can cause symptoms like severe headache, chest pain, blurred vision, confusion, shortness of breath, or nausea. That level requires immediate medical attention.
Why “Average” and “Normal” Aren’t the Same
The distinction matters. The averages listed above include millions of people who already have high blood pressure, whether they know it or not. Roughly half of U.S. adults meet the criteria for hypertension under current guidelines. That pulls the population average upward, especially in older age groups. An average systolic reading of 139 in women over 60 falls squarely into Stage 1 hypertension territory. Being “average” for your age group does not mean your blood pressure is healthy.
The clinical target remains below 120/80 for most adults. If your readings consistently land in the elevated or Stage 1 range, lifestyle changes like reducing sodium, increasing physical activity, and maintaining a healthy weight can often bring the numbers down. Medication typically enters the picture at 140/90 or above, or at 130/80 for people with diabetes, kidney disease, existing heart disease, or elevated cardiovascular risk.
Your Blood Pressure Fluctuates Throughout the Day
A single reading is a snapshot, not a diagnosis. Blood pressure follows a daily rhythm: it’s generally higher during waking hours and drops by 10% or more during sleep. Exercise, caffeine, stress, a full bladder, and even conversation can temporarily push your numbers up. Some people experience a consistent spike at the doctor’s office, sometimes called the “white coat” effect, that doesn’t reflect their usual levels at home.
That daily variation is why a diagnosis of hypertension is based on the average of multiple readings taken on separate occasions, not one high number at a single visit. Home monitoring over several days gives a much more reliable picture than a single office visit.
Getting an Accurate Reading
Small details in how you measure can swing your reading by 10 to 20 points. To get a number you can trust:
- Sit quietly for five minutes before taking the measurement. Rushing in and immediately strapping on the cuff inflates your reading.
- Position yourself correctly: sit in a chair with your feet flat on the floor, back supported, and your arm resting on a surface so your elbow is roughly at heart level.
- Use the right cuff size. The inflatable part of the cuff should cover at least 80% of your upper arm. A cuff that’s too small gives artificially high readings.
- Place the cuff on bare skin, not over clothing.
- Don’t talk during the measurement.
Taking two or three readings a minute apart and averaging them gives the most reliable result. If you’re tracking your numbers at home, measuring at the same time each day helps you spot real trends rather than normal daily fluctuation.