The estimated population of the U.S. was approximately 334.9 million in 2023, and the largest age group was adults aged 30 to 34. There were 11.88 million males in this age category and around 11.64 million females. Which U.S. state has the largest population? The population of the United States continues to increase, and the country is the third most populous in the world behind China and India. The gender distribution has remained consistent for many years, with the number of females narrowly outnumbering males. In terms of where the residents are located, California was the state with the highest population in 2023. The U.S. population by race and ethnicity The United States is well known the world over for having a diverse population. In 2023, the number of Black or African American individuals was estimated to be 45.76 million, which represented an increase of over four million since the 2010 census. The number of Asian residents has increased at a similar rate during the same time period and the Hispanic population in the U.S. has also continued to grow.

In the United States in 2021, the death rate was highest among those aged 85 and over, with about 17,190.5 men and 14,914.5 women per 100,000 of the population passing away. For all ages, the death rate was at 1,118.2 per 100,000 of the population for males, and 970.8 per 100,000 of the population for women. The death rate Death rates generally are counted as the number of deaths per 1,000 or 100,000 of the population and include both deaths of natural and unnatural causes. The death rate in the United States had pretty much held steady since 1990 until it started to increase over the last decade, with the highest death rates recorded in recent years. While the birth rate in the United States has been decreasing, it is still currently higher than the death rate. Causes of death There are a myriad number of causes of death in the United States, but the most recent data shows the top three leading causes of death to be heart disease, cancers, and accidents. Heart disease was also the leading cause of death worldwide.

Gen Z and millennial men in the United States are more likely to live with their parents than women in the same age group. In 2023, approximately 11 percent of women aged 25 to 34 lived in their parents' home, compared to almost 19 percent of men. When looking at the age group of 18 to 24, the difference was less drastic.

The Second World War severely altered the demographic composition of many countries, particularly in terms of gender ratios across certain age groups. For age groups below 14 years, there is little observable impact of the war on gender ratios, however, some countries see a drastic change across older generations, particularly in the Soviet Union. For men in their twenties (i.e. those in their late-teens or early-twenties when the war began), the ratio drops from 98 men per 100 women in the 15-19 age group, to 68 men per 100 women in the 25-29 group.

In addition to the Second World War, these figures are affected by trends in nature and other historical events. For example, women tend to have higher overall life expectancies than men, which typically sees gender ratios widen among older generations. The impact of the First World War is also most-observable in France's gender ratios for those aged in their fifties. Additionally, the gap in ratios remains high for the Soviet Union across older age groups due to the impact of the First World War and the famine of the early 1930s, however the figures for Russia itself are even lower as it was disproportionately affected by the Russian Revolution and famine of the 1920s.

While the fear of being kidnapped may persist for one’s entire life, the number of missing persons under the age of 21 was much higher than those 21 and over in the United States in 2024. In that year, there were 198,686 females under the age of 21 who were reported missing in the U.S., compared to only 63,584 females over the age of 21. Why people go missing There are many reasons why people go missing; some are kidnapped, some purposefully go missing - in order to escape abuse, for example - and some, usually children, are runaways. What persists in the imagination when thinking of missing persons, however, are kidnapping victims, usually due to extensive media coverage of child kidnappings by the media. Demographics of missing persons While the number of missing persons in the United States fluctuates, in 2021, this number was at its lowest since 1990. Additionally, while it has been observed that there is more media coverage in the United States of white missing persons, almost half of the missing persons cases in 2022 were of minorities.

Rank, number of deaths, percentage of deaths, and age-specific mortality rates for the leading causes of death, by age group and sex, 2000 to most recent year.

In 2022, 97.4 percent of women between the ages of 15 and 19 years old in the United States were childless -- the most out of any age group. In the same year, 17.7 percent of women between the ages of 40 and 44 years old were childless. Demographics of women without children As of 2022, a little less than half of all women in the U.S. were childless. About 68.4 percent of women without children did not have a high school degree, which is in line with the largest percentage of childless women being between the ages of 15 and 19. Additionally, about 48 percent of Asian women in the United States did not have any children, more than the national average. Births in the U.S. Asian women in the United States have the lowest fertility rate per 1,000 women, while Native Hawaiian and Pacific Islander women had the highest fertility rate. The vast majority of all births in the U.S. were to women between the ages of 20 and 39, but it is worth noting that births in the United States have been declining over the past few decades.

In 2024, around 17 percent of men in the United States received mental health treatment or counseling in the past year. The share of men who have received treatment for mental health problems has increased over the past couple decades likely due to a decrease in stigma around seeking such help and increased awareness of mental health issues. However, women in the U.S. are still much more likely to receive mental health treatment than men. Mental illness among men No one is immune to mental illness and the impact of mental health problems can be severe and debilitating. In 2023, it was estimated that 19 percent of men in the United States had some form of mental illness in the past year. Two of the most common mental disorders among men and women alike are anxiety disorders and depression. Depression is more common among men in their late teens and early 20s, with around 15 percent of U.S. men aged 21 to 25 years reporting experiencing a major depressive episode in the past year as of 2022. Depression is a very treatable condition, but those suffering from depression are at a much higher risk of suicide than those who do not have depression. Suicide among men Although women in the United States are more likely to report suffering from mental illness than men, the suicide rate among U.S. men is around 3.7 times higher than that of women. Suicide deaths among men are much more likely to involve the use of firearms, which may explain some of the disparity in suicide deaths between men and women. In 2020, around 58 percent of suicide deaths among men were from firearms compared to just 33 percent of suicide deaths among women. Although more people in the United States are accessing mental health, barriers to treatment persist. In 2022, the thought that they could handle the problem without treatment was the number one reason U.S. adults gave for not receiving the mental health treatment they required.

In 2023, nearly 58 percent of 18-24-year old men in the United States lived with a parent, whereas approximately *** percent lived alone. In comparison, the share of women living with a parent was about **, compared to *** percent who lived alone.

Globally, about 25 percent of the population is under 15 years of age and 10 percent is over 65 years of age. Africa has the youngest population worldwide. In Sub-Saharan Africa, more than 40 percent of the population is below 15 years, and only three percent are above 65, indicating the low life expectancy in several of the countries. In Europe, on the other hand, a higher share of the population is above 65 years than the population under 15 years. Fertility rates The high share of children and youth in Africa is connected to the high fertility rates on the continent. For instance, South Sudan and Niger have the highest population growth rates globally. However, about 50 percent of the world’s population live in countries with low fertility, where women have less than 2.1 children. Some countries in Europe, like Latvia and Lithuania, have experienced a population decline of one percent, and in the Cook Islands, it is even above two percent. In Europe, the majority of the population was previously working-aged adults with few dependents, but this trend is expected to reverse soon, and it is predicted that by 2050, the older population will outnumber the young in many developed countries. Growing global population As of 2025, there are 8.1 billion people living on the planet, and this is expected to reach more than nine billion before 2040. Moreover, the global population is expected to reach 10 billions around 2060, before slowing and then even falling slightly by 2100. As the population growth rates indicate, a significant share of the population increase will happen in Africa.

The suicide rate among females in the United States is highest for those aged 45 to 64 years and lowest among girls aged 10 to 14 and elderly women 75 and over. Although the suicide rate among women remains over three times lower than that of men, rates of suicide among women have gradually increased over the past couple decades. Suicide among women in the United States In 2021, there were around six suicide deaths per 100,000 women in the United States. In comparison, the rate of suicide among women in the year 2000 was about four per 100,000. Suicide rates among women are by far the highest among American Indians or Alaska Natives and lowest among Hispanic and Black or African American women. Although firearms are involved in the highest share of suicide deaths among both men and women, they account for a much smaller share among women. In 2020, the firearm suicide rate among women was 1.8 per 100,000 population, while the rates of suicide for suffocation and poisoning were 1.7 and 1.5 per 100,000, respectively. Suicidal ideation among women Although not everyone who experiences suicidal ideation, or suicidal thoughts, will attempt suicide, suicidal thoughts are a risk factor for suicide. In 2022, just over five percent of women in the United States reported having serious thoughts of suicide in the past year. Suicidal thoughts are more common among women than men even though men have much higher rates of death from suicide than women. This is because men are more likely to use more lethal methods of suicide such as firearms. Women who suffer from substance use disorder are significantly more likely to have serious thoughts of suicide than women without substance use disorder.

As of June 2025, **** percent of Instagram users in the United States were aged between 25 and 34 years, making up the platform’s largest audience in the country. Overall, the group with the second-highest usage was those aged 18 to 24 years, with **** percent of users, followed by **** percent that were aged 35 to 44 years. The age group that used Instagram the least was those older than 65 years, making up *** percent of users, respectively. Popular social media platforms in the United States Instagram was the fourth most visited social media platform in the United States as of March 2025 across desktop, mobile, and tablet devices combined, accounting for *** percent of all social media visits in the country. Despite Instagram’s popularity, Facebook remained the leading social media platform by far in the U.S., accounting for more than ** percent of all social media visits. Pinterest and X (formerly Twitter) ranked second and third in terms of visits, with ***** percent and ***** percent of visits, respectively. Instagram’s global audience Instagram’s global popularity continues to surge, with no signs of slowing down. As of January 2025, the country with the largest Instagram audience was India with ****** million users, while the United States had the second-highest market with ***** million users, followed by Brazil, Indonesia, and Turkey, respectively. As of February 2025, Instagram was the third most popular social network globally, reaching *** billion monthly active users.

In 2023, it was estimated that nearly 61 percent of those aged 26 to 29 years in the United States were current alcohol drinkers, the highest rate of all age groups. Those aged 26 to 29 also had the highest rates of binge alcohol use. Although the legal age to consume alcohol in the United States is 21, around 31.1 percent of those aged 18 to 20 years were already current alcohol users. Binge drinking in the United States Binge drinking is commonly defined as consuming five or more alcoholic drinks on one occasion for men and four or more drinks for women. Binge drinking is most common among adults in their 20s, and more common among Hispanics and Whites than other races or ethnicities. The states with the highest prevalence of binge drinking are North Dakota, Montana, and Iowa, while Alabama has the lowest prevalence of binge drinking of all U.S. states. In 2022, almost 22 percent of the population of North Dakota binge drank in the past 30 days, with the overall prevalence rate in the United States around 17 percent at that time. High school alcohol use Although alcohol use among teens remains a problem, the annual prevalence of alcohol use among those in grades 8, 10, and 12 has decreased dramatically over the past two decades. In 2023, it was estimated that a combined total of 30 percent of those in grades 8, 10, and 12 had used alcohol in the past year. In comparison, the annual prevalence rate of alcohol use among these grades was just over 67 percent in the year 1991. The 30-day prevalence of alcohol use for these grades has also decreased significantly. In 1991, around 40 percent of those in grades 8, 10, and 12 used alcohol in the past month, while in 2023 this rate dropped to just 14.3 percent.

In January 2022, it was estimated that about 1.85 million male illegal immigrants living in the United States were aged between 35 and 44 years old. In that same year, it was estimated that 1.52 million female illegal immigrants living in the U.S. were between 35 and 44 years old.

Rates of syphilis in the United States are higher among men than women. This is true for every race and ethnicity, although the difference varies greatly. For example, among the Black population, there were around 62.3 cases of syphilis among men per 100,000 population in 2023 and only 18.8 cases per 100,000 population among women. On the other hand, rates of syphilis among American Indians/Alaska Natives were similarly high for both men and women with rates of 63.6 and 52.9 per 100,000 population, respectively. What is syphilis? Syphilis is a common and treatable sexually transmitted disease (STD). Anyone who is sexually active can contract syphilis, however men who have sex with only men accounted for slightly more cases than other groups in 2022. There are four stages of syphilis, and each stage has different signs and symptoms. The stages are primary, secondary, latent, and tertiary. Syphilis can be cured with antibiotics. How many people get syphilis each year? In 2022, there were around 207,255 cases of syphilis in the United States. This was the highest number of cases recorded since the 1950s. In comparison, in the year 2000, there were only around 31,618 cases. Like chlamydia and gonorrhea, rates of syphilis in the United States have increased over the past couple decades reaching 62 per 100,000 population in 2022. However, this rate is still far below the rate of 146 cases per 100,000 population recorded in 1950. Rates of syphilis in the U.S. are highest among people in their twenties and early thirties.

Among men in the United States, those aged 75 years and older have the highest death rate from suicide among all age groups. In 2022, the suicide death rate among men aged 75 years and older was 43.9 per 100,000 population. In comparison, the death rate from suicide among men aged 25 to 44 years was 29.6 per 100,000. Suicide is a significant problem in the United States, with rates increasing over the past decade. Suicide among men In the United States, the suicide rate among men is almost four times higher than that of women. In 2022, the rate of suicide among U.S. men was 23 per 100,000 population, the highest rate recorded over the past 70 years. Firearms account for the vast majority of suicide deaths among men, accounting for around 60 percent of male suicides in 2021. The reasons why U.S. men have higher rates of suicide than women are complex and not fully understood, but may have to do with the more violent means by which men carry out suicide and the stigma around seeking help for mental health issues. Suicide among women Although the suicide rate among women in the U.S. is significantly lower than that of men, the rate of suicide among women has increased over the past couple of decades. Among women, those aged 45 to 64 years have the highest death rates due to suicide, followed by women 25 to 44 years old. Interestingly, the share of women reporting serious thoughts of suicide in the past year is higher than that of men, with around 5.5 percent of U.S. women reporting such thoughts in 2023. Similarly to men, firearms account for most suicide deaths among women, however suffocation and poisoning account for a significant share of suicides among women. In 2021, around 35 percent of suicides among women were carried out by firearms, while suffocation and poisoning each accounted for around 28 percent of suicide deaths.

From the mid-19th century until today, life expectancy at birth in the United States has roughly doubled, from 39.4 years in 1850 to 79.6 years in 2025. It is estimated that life expectancy in the U.S. began its upward trajectory in the 1880s, largely driven by the decline in infant and child mortality through factors such as vaccination programs, antibiotics, and other healthcare advancements. Improved food security and access to clean water, as well as general increases in living standards (such as better housing, education, and increased safety) also contributed to a rise in life expectancy across all age brackets. There were notable dips in life expectancy; with an eight year drop during the American Civil War in the 1860s, a seven year drop during the Spanish Flu empidemic in 1918, and a 2.5 year drop during the Covid-19 pandemic. There were also notable plateaus (and minor decreases) not due to major historical events, such as that of the 2010s, which has been attributed to a combination of factors such as unhealthy lifestyles, poor access to healthcare, poverty, and increased suicide rates, among others. However, despite the rate of progress slowing since the 1950s, most decades do see a general increase in the long term, and current UN projections predict that life expectancy at birth in the U.S. will increase by another nine years before the end of the century.

The rate of liver cancer diagnoses in the United States increases with age. As of 2022, those aged 80 to 84 years had the highest rates of liver cancer. Risk factors for liver cancer include smoking, drinking alcohol, being overweight or obese, and having diabetes. Who is most likely to get liver cancer? Liver cancer in the United States is much more common among men than women. In 2022, there were 12 new liver cancer diagnoses among men per 100,000 population, compared to just five new diagnoses per 100,000 women. Concerning race and ethnicity, non-Hispanic American Indians and Alaska Natives and Hispanics have the highest rates of new liver cancer diagnoses. The five-year survival rate for liver cancer in the United States is around 22 percent; however, this rate is much higher among non-Hispanic Asian and Pacific Islanders than other races and ethnicities. Non-Hispanic Asian and Pacific Islanders have a 33 percent chance of surviving the next five years after a liver cancer diagnosis. Deaths from liver cancer In 2023, there were an estimated 29,911 deaths in the United States due to liver cancer. However, the death rate for liver cancer has remained stable over the past few years. In 2023, the death rate for liver cancer was 6.6 deaths per 100,000 population. It is estimated that in 2025, there will be over 19,000 liver and intrahepatic bile duct cancer deaths among men in the United States and 10,800 such deaths among women.

Breast augmentation is a popular cosmetic procedure in the United States, with women aged ***** accounting for over a ***** of the ******* operations performed in 2024. This age group, along with those aged *****, comprised over ********** of all breast implant placements or removals. The concentration of procedures among these age brackets highlights the demand for breast augmentation among women in their prime adult years. Patient Satisfaction and Procedure Rankings Breast augmentation consistently ranks as one of the most sought-after cosmetic surgeries in the U.S. In 2023, it was the ****** most frequently performed surgical cosmetic procedure, trailing only liposuction. The popularity of breast augmentation is matched by high patient satisfaction rates, with up to ** percent of patients stating they would undergo the procedure again. This level of satisfaction surpasses even that of rhinoplasty, commonly known as a nose job. Gender Differences and Global Trends While breast augmentation is predominantly chosen by women, men also seek cosmetic breast procedures, albeit for different reasons. Male patients more commonly opt for breast reduction, making it the ****** most popular surgical cosmetic procedure among men. On a global scale, breast augmentation ranks as the ******most performed surgical cosmetic procedure worldwide, with nearly **** million operations in 2024.

The homeownership rate was the highest among Americans in their early 70s and the lowest among people in their early 20s in 2024. In that year, approximately **** percent of individuals aged 70 to 74 resided in a residence they owned, compared to approximately ** percent among individuals under the age of 25. On average, **** percent of Americans lived in an owner-occupied home. The homeownership rate was the highest in 2004 but has since declined.