Weight alone doesn’t define health. This life-stage breakdown, based on CDC data, reflects common trends, but height affects how those numbers show up on different bodies. However, averages can help you determine where you fall on the scale. Curious to see how your stage compares to the national average? Keep reading.
Girls Below 13
Before age 13, weight tends to fluctuate widely as girls grow at different rates. Height spurts, early signs of puberty, and changing activity levels can all influence body weight in unpredictable ways. At this stage, growth patterns are highly individual and don’t follow a single, consistent trend.
Adolescents Aged 13–17
Teen girls aged 13 to 17 typically weigh between 125 and 149 pounds. This period marks significant growth spurts and hormonal changes, and it also influences weight fluctuations. Nutrition and physical activity contribute to establishing healthy patterns during these formative years.
Teens Transitioning To Adulthood, Age 18–19
Though thinner than older groups, this age also shows fluctuating weight as physical and emotional development intersect with lifestyle experimentation. Stats show that 18–19-year-old women average 154 pounds. Many are still completing puberty, with hormonal levels balancing out.
Women In Their 20s
How much does the average woman in her twenties weigh? According to CDC data, it’s 165 pounds. Hormonal stabilization and lifestyle shifts define this life stage. Although bodies vary, most women in this bracket are nearing peak muscle mass and settling into adult body proportions.
Women In Their 30s
Reaching your thirties often signals a gradual rise in body weight. The average for a woman in this group is 174.9 pounds. Career demands and parenting changes can alter metabolism, so it’s a pivotal decade where diet and physical activity begin to influence long-term weight trends.
Women In Their 40s
Women aged 40–49 typically weigh around 178.1 pounds. Midlife can bring subtle but steady body changes, as early signs of menopause begin to affect fat distribution. Many report shifts in energy and muscle tone that quietly add pounds despite unchanged eating habits or daily routines.
Women In Their 50s
By this age, body composition and metabolism can change more dramatically than in earlier decades. As estrogen levels shift, weight tends to gather in the abdomen and thighs, and daily activities decrease without conscious effort. Women in their fifties average at 173.5 pounds.
Women In Their 60s
Women aged 60–69 weigh an average of 172.4 pounds. During this period of life, the body’s priorities shift—muscle mass begins to decline more rapidly, especially without resistance training. The CDC emphasizes that this is a key period when preserving strength becomes more important than chasing numbers on the scale.
Women In Their 70s
During this decade, maintaining bone density and prioritizing nutrition take center stage. The average woman in her seventies weighs around 164.6 pounds. As muscle continues to decline, fat often replaces it, shifting body composition even when overall weight stays relatively stable.
Women In Their 80s
Weight in later life often tapers off. For women over 80, the average is 149.7 pounds. Appetite, medications, and slower digestion all contribute to this downward shift. At this time, maintaining mobility and strength takes priority over scale-based benchmarks.
