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In 2020, there were 80,000 people over 100, an increase of around 50% since 2010. ... Conversely, states with the lowest percentage of adults over 85 years old included Utah, at 1.2%, and Alaska ...
The birth rate is 11.0 births/1,000 population, as of 2020. [82] This was the lowest birth rate since records began. There were 3,613,647 births in 2020, this was the lowest number of births since 1980. [82] 11.0 births/1,000 population per year (final data for 2020). 11.4 births/1,000 population per year (final data for 2019). [82]
The Social Security Administration (SSA) estimates that the dependency ratio (people ages 65+ divided by people ages 20–64) in 2080 will be over 40%, compared to the 20% in 2005. [91] SSA data shows one out of every four 65-year-olds today will live past the age of 90, while one out of 10 will live past 95.
The number of marriages shot up to reach over 2 million in 1946, with a marriage rate of 16.4 per 1,000 people as WWII had ended. The average age at first marriage for both men and women began to fall after WWII, dropping 22.8 for men and 20.3 for women in 1950 and dropping even more to 22.5 and 20.1 years in 1956.
Subsequently, the growth rate slowed, with an 11.0% rise to 3.8 million in 1970. Over the next three decades, the population continued to grow at an average rate of 9.0%, resulting in a population of 4.91 million according to the 2000 census. [10] In 2020, the population was approximately 5.7 million.
Buckeye had the largest population growth of approximately 48.1% over the past five years, with the 2022 population standing at 105,567. The population is made up of 51.2% men and 48.83% women ...
People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. [8] The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999.
The following list of countries by age structure sorts the countries of the world according to the age distribution of their population. The population is divided into three groups: Ages 0 to 14 years: children. Ages 15 to 64 years: working population or adults. Over the age of 65: elderly, senior citizens.