What Is The Average Weight For Women In America? | CDC Data

The current national average gives a plain answer: adult women in the United States weigh 171.8 pounds on average. That figure comes from measured body data, not self-reported guesses, which makes it far more useful than the loose numbers that float around on random blogs.

Still, one average can only tell part of the story. Weight shifts with age, height, body composition, muscle mass, and life stage. A 25-year-old woman who is 5 feet 8 inches tall will not land in the same range as a 75-year-old woman who is 5 feet 2 inches tall, and neither one is “wrong” just because the national mean sits somewhere else.

That’s why this topic works best when you pair the headline number with age bands, height, and body mass index. Once you do that, the average starts to make sense instead of feeling random.

What Is The Average Weight For Women In America? By Age

The latest CDC body measurement data show that the average rises from the 20s into midlife, then trends down in older age. In the same data set, the average adult woman was 63.5 inches tall, or 5 feet 3.5 inches. That helps explain why the national mean weight is not the same as a “healthy target” for every woman.

Here is the age breakdown from the CDC’s measured data for U.S. women age 20 and older. These are weighted national estimates, so they are built to reflect the wider population rather than just the women who showed up for the survey.

How Average Weight Changes Across Adulthood

Women in their 20s averaged 164.9 pounds. The average then climbed into the high 170s and reached 180.0 pounds in the 50 to 59 group. After that, it eased down to 171.0 pounds in the 60s, 162.8 pounds in the 70s, and 149.7 pounds at age 80 and older.

That pattern is common in population data. Midlife often brings weight gain from lower daily movement, shifts in body fat distribution, and less lean mass over time. Later in life, average weight can drop as muscle mass, appetite, and total body size fall.

Age Group	Average Weight	CDC Measured Data
20 and older	171.8 lb	National average for adult women
20–29	164.9 lb	Lower than the adult mean
30–39	178.3 lb	Higher than the adult mean
40–49	177.3 lb	Near the 30s average
50–59	180.0 lb	Highest average in the table
60–69	171.0 lb	Close to the adult mean
70–79	162.8 lb	Lower than the adult mean
80 and older	149.7 lb	Lowest adult average shown

Why The National Average Can Mislead

If you type “average weight for women in America” into a search bar, it sounds like you’re asking for one magic number. You are, in a way. But that number is only a population snapshot. It does not tell you whether a given woman is at a weight that fits her height, frame, or health picture.

A woman who stands taller than average will often weigh more than 171.8 pounds and still fall into a healthy range. A shorter woman may weigh much less and still be perfectly fine. That is why the CDC body measurements data are handy as a benchmark, not a verdict.

The same report shows that adult women averaged 63.5 inches tall. When weight and height move together, the number on the scale starts to mean more. Without height, the average weight alone can push readers into bad comparisons.

Average Weight Is Not The Same As A Healthy Weight

A national mean tells you what is common. It does not tell you what is a good fit for your body. For that, clinicians still lean on body mass index as one basic screening tool. The NHLBI says a healthy weight for adults is generally tied to a BMI from 18.5 to 24.9, and its healthy weight page lays out that range in plain language.

BMI has limits. It does not separate muscle from body fat, and it can miss body composition details. Even so, it is far more useful than comparing yourself with a national average stripped of context.

Put it this way: if two women each weigh 172 pounds, one may be near the middle of a healthy range and the other may not. Height changes the reading. So does muscle mass. So does age.

Where Most Adult Women Fall On The Scale

The average is only one point in a much wider spread. The CDC data also publish percentiles, which show how weights are distributed across the adult female population. That gives a cleaner read on what is common.

For women age 20 and older, the median weight is 162.0 pounds. That means half of adult women weigh less than that point and half weigh more. The mean is higher than the median, which tells you heavier weights at the upper end pull the average up.

Percentile	Weight For Adult Women	What It Means
10th	120.6 lb	About 1 in 10 weigh less
25th	138.0 lb	Lower quarter of the range
50th	162.0 lb	Median adult female weight
75th	196.7 lb	Upper quarter begins here
90th	236.3 lb	Only 1 in 10 weigh more
95th	262.7 lb	Upper end of the published spread

What The Numbers Say About Women’s Weight In The U.S.

The headline figure of 171.8 pounds sits beside another national marker: obesity prevalence among adult women was 41.3% during August 2021 to August 2023, based on measured CDC data. You can see that figure on the CDC’s adult obesity prevalence report.

That does not mean every woman near the average weight has obesity. It means population weight, height, and BMI data are tied to a wider pattern in the country. The mean weight is higher than many readers expect because the whole distribution has shifted upward over time.

Why Midlife Often Sits Above The Overall Average

The age table makes one point clear: women in their 30s, 40s, and 50s tend to sit above the full adult average. That lines up with changes in routine, muscle mass, sleep, and body fat storage across adulthood. Then, in later years, the averages trend down.

This is one reason online “ideal weight” charts can feel off. They often skip age and lean too hard on a single formula. Real population data are messier than that, and that messiness is normal.

How To Use The Average Without Letting It Mess With Your Head

The national average works best as a reference point, not a scorecard. If you want to compare your own number with something useful, pair your weight with your height first. Then check the trend over time rather than staring at one weigh-in.

• Use the U.S. average to understand the broader picture, not to judge your body.
• Check your height with your weight before making any call about where you stand.
• Watch long-term patterns. A slow trend matters more than one random spike.
• Give body composition some room in the picture. More muscle can raise scale weight.
• Use age context. The national average is not flat across adulthood.

If your real question is “Is my weight okay for my height?” the average for women in America is not the best tool. BMI, waist size, fitness, and changes across time all tell you more than one national mean ever could.

So, what is the average weight for women in America? The latest measured CDC answer is 171.8 pounds for adult women. That is a clean benchmark. The smarter move is to place it next to age, height, and body composition before you make anything personal out of it.