In the US, how many adults live there?

According to information provided by the US Census Bureau, an estimated 327,167,434 individuals called the United States and Puerto Rico home in 2018. 253,768,092 of these people were adults, defined as those who were 18 years of age or older. This is the same as 77.6% of the total population of the nation.

With 70.5 percent of its population being of legal age, Utah has the lowest percentage of adults. The majority of adults lived in the District of Columbia, where there were 81.9 percent of inhabitants who were 18 or older.

Every ten years, the US Census Bureau conducts extensive surveys known as the decennial census. The data gathered covers every citizen’s age, sex, race, occupation, and living situation. Decisions involving the government, housing, the generation of jobs, healthcare services, and education are made utilising this data.

Expected lifespan

Adults in the United States have an average life expectancy of 78.6 years, according to the Centers for Disease Control and Prevention. This is based on information gleaned from 2017 Medicare data and 2010 US Census data.

The average life expectancy has decreased by 0.1 from 2016 according to data. Statistics confirm that social dangers and financial status are the main variables contributing to the decline in life expectancy.

Health Issues

There are numerous health issues affecting American people’ life expectancy today. Even the changes in healthcare are considered in this. The top four health issues are as follows:

Overdoses on drugs


liver illness

stress-related illnesses

According to reports, the rate of fall in life expectancy is greatest among middle-class persons. This pattern has been present since the early 1980s, when manufacturing employment started to suffer and disappear.

Due to these circumstances, people experienced increased financial stress, lost health insurance, and sadness. As a result, there was an increase in adult drug and alcohol dependence as well as malnutrition and slack medical treatment.

Financial Position

According to US Census Bureau data from 2018, the median household income for individuals in the United States was $63,179. Adult men allegedly earned $55,291 on average, while adult women reportedly made $45,097. Based on full-time employment, this data.

2018 saw a reduction in poverty from 12.3 percent to 11.8 percent, a reduction of 0.5 percent. This translates to 38.1 million American adults who are poor in the US. Adults 25 years of age and older without a high school education or GED made up the largest group of people living in poverty.


According to, 65 percent of employment demand education and skills beyond a high school graduation. However, just a high school diploma or less is held by 59 million of the 166 million working adults.

The health and lifestyles of American people are being negatively impacted, which is changing how long they will live.

According to statistics, full-time workers with a high school graduation make around $10,000 more than those without one. Employees with some college education make $13,000 more per year than those with less education.

Conversely, college grads with at least an associate’s degree make at least $40,000 annually.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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