The average American woman weighs about 170 pounds, based on data from the National Health and Nutrition Examination Survey (NHANES) conducted by the CDC. That number has climbed steadily over the past several decades, up from roughly 140 pounds in the 1960s. But averages only tell part of the story. A woman’s weight is shaped by her age, height, genetics, ethnicity, and life stage, so the number that’s “normal” for any individual can vary widely.
Average Weight by Age
Women’s weight tends to increase gradually from their 20s through their 50s and 60s, then decline slightly in older age. Women in their 20s average closer to 160 pounds, while women in their 40s and 50s typically fall in the 170 to 175 pound range. After age 60, average weight starts to drop, partly because of natural losses in muscle mass and bone density.
One major driver of midlife weight gain is the hormonal shift around menopause. During a woman’s 50s, weight tends to increase at a rate of about 1.5 pounds per year. The pattern of where fat is stored also changes: rather than accumulating around the hips and thighs, weight gained during and after menopause tends to settle around the abdomen. This shift in fat distribution matters because abdominal fat is more closely linked to heart disease and metabolic problems than fat stored in the lower body.
How Height Changes the Picture
An average weight means very little without knowing height. A woman who is 5’0″ and weighs 170 pounds is in a completely different situation than a woman who is 5’8″ and weighs 170 pounds. That’s why health professionals rely on BMI (body mass index), which accounts for both weight and height.
For reference, a BMI between 18.5 and 24.9 is considered a “normal” weight range. For a woman who is 5’4″ (the average height for American women), that translates to roughly 108 to 145 pounds. The current national average of about 170 pounds at that height puts the typical American woman in the “overweight” BMI category. That said, BMI has real limitations. It doesn’t distinguish between muscle and fat, doesn’t account for bone density, and may overestimate health risk in some populations while underestimating it in others.
Weight Varies Significantly by Ethnicity
National averages mask large differences across racial and ethnic groups. CDC data from 2013 to 2016 paints a clear picture of how dramatically these patterns diverge among U.S. women aged 20 and older.
Non-Hispanic Asian women have the lowest rates of overweight and obesity by a wide margin. About 59% fall in the normal weight range, and only about 14% meet the threshold for obesity. Non-Hispanic white women fall in the middle: roughly 34% are at a normal weight, while about 38% have obesity.
Hispanic and Latina women have higher rates, with about 49% meeting the obesity threshold and only 20% in the normal weight range. Non-Hispanic Black women have the highest rates overall: approximately 56% have obesity, and just under 18% are in the normal weight range. These differences reflect a complex mix of genetics, socioeconomic factors, food access, cultural dietary patterns, and the cumulative effects of stress and discrimination on health.
How the Average Has Changed Over Time
The average American woman weighed about 140 pounds in the early 1960s. By the late 1990s, that number had jumped to roughly 163 pounds. Today it sits around 170. That’s a 30-pound increase in about 60 years, and the trend hasn’t flattened.
Several forces are behind the shift. Portion sizes at restaurants and in packaged food have grown substantially since the 1970s. Highly processed, calorie-dense foods became cheaper and more available. Jobs became more sedentary. Commutes got longer. Screen time replaced physical activity for leisure. None of these changes happened because individuals made worse choices. They happened because the environment around food and movement changed dramatically, and weight followed.
What “Average” Doesn’t Tell You About Health
Knowing the national average is useful context, but it’s a poor benchmark for your own health. Two women at the same weight can have very different health profiles depending on their fitness level, where they carry fat, their blood pressure, blood sugar, and cholesterol levels.
A more useful approach than comparing yourself to the average is looking at your own weight trend over time. Steady, gradual increases over years can signal shifts in diet, activity, or hormonal changes worth paying attention to. Sudden or unexplained changes in either direction are more clinically meaningful than where you fall relative to a national statistic. Your waist circumference can also be a better indicator of metabolic risk than your weight alone, since abdominal fat has a stronger connection to conditions like type 2 diabetes and cardiovascular disease than overall body weight does.