The average American woman is 5 feet, 3.5 inches tall (63.5 inches), weighs 171.8 pounds, and has a waist circumference of 38.5 inches. These figures come from CDC measurements taken between 2021 and 2023 on adults aged 20 and older. In practical terms, that translates to roughly a dress size 16 to 18.
Height, Weight, and Waist Size
The three core measurements the CDC tracks for adult women paint a clear picture. At 63.5 inches tall, the average woman is just a hair under 5 foot 4. Her weight of 171.8 pounds and waist circumference of 38.5 inches reflect a body that is noticeably larger than it was a few generations ago.
In the early 1960s, the average American woman stood about 5 feet 3 inches and weighed 140 pounds. Today she’s gained roughly half an inch in height but about 30 pounds in weight. Height has essentially plateaued over the last decade, while weight has continued climbing.
How Weight Changes With Age
Women don’t stay the same size throughout adulthood. Average weight follows a predictable arc, rising through middle age and then declining in later years:
- 20 to 29: 165 pounds
- 30 to 39: 178 pounds
- 40 to 49: 177 pounds
- 50 to 59: 180 pounds
- 60 to 69: 171 pounds
- 70 to 79: 163 pounds
- 80 and over: 150 pounds
Weight peaks in the 50s, then drops steadily. The 30-pound difference between a woman in her 50s and one over 80 reflects natural muscle and bone loss, changes in appetite, and shifts in body composition that come with aging.
Average Dress Size
A 2017 study comparing national health survey data to standard clothing charts found that the average American woman wears between a size 16 and 18 in misses sizing. That’s a significant gap from what the fashion industry has traditionally treated as “standard.” Many brands still build their collections around a size 6 or 8 fit model, which means the majority of women are shopping outside the core size range that gets the most design attention.
This mismatch is one reason the plus-size market has grown so rapidly, and why retailers have gradually expanded their size offerings over the past decade.
Differences by Race and Ethnicity
Body size varies substantially across racial and ethnic groups in the U.S. Based on measured data from 2013 to 2016, the percentage of women falling into a “healthy weight” BMI range (18.5 to 24.9) differed dramatically:
- Asian women: 59.3% at a healthy weight
- White women: 33.8%
- Hispanic or Latina women: 20.4%
- Black women: 17.6%
The obesity rate among Black women was 56%, compared to 48.9% for Hispanic women, 37.9% for white women, and 13.6% for Asian women. These differences are shaped by a complex mix of genetics, income, food access, cultural dietary patterns, and neighborhood environments. They’re population-level patterns, not individual predictions.
How American Women Compare Globally
American women are taller and heavier than women in most of the world. Among countries tracked by the FAO, only women in the Netherlands and parts of Scandinavia and Germany tend to be taller on average. Dutch women, for instance, consistently rank at or above the 70th percentile for height compared to international reference standards.
Women in most of East and Southeast Asia fall well below U.S. averages for height. Japanese women, for example, land around the 10th to 20th percentile on global height charts. Women in South American countries like Uruguay, Colombia, and Cuba cluster around the 20th to 30th percentile. These gaps reflect long-term differences in nutrition, healthcare access, and genetics across populations.
Where the U.S. stands out most sharply is weight. American women are among the heaviest in the world on average, a pattern driven largely by dietary factors, portion sizes, and lifestyle rather than by height alone.
What BMI Categories Look Like
For a woman of average height (5 feet 3.5 inches), a healthy BMI of 18.5 to 24.9 corresponds to a weight between roughly 105 and 140 pounds. The average weight of 171.8 pounds puts the typical American woman in the “obese” BMI category, which starts at a BMI of 30.
According to 2017-2018 national survey data, 41.9% of adult women met the criteria for obesity, including 11.5% with severe obesity (BMI of 40 or higher). Another 27.5% were classified as overweight. That means roughly 70% of American women fall above the healthy weight range. These numbers have been trending upward for decades, and they represent a major shift from the 1960s, when the average woman’s weight of 140 pounds placed her squarely in the normal BMI range for her height.