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With 2,860,009 residents in 1,285 km 2 (496.1 sq mi), [2] Rome is the country's most populated comune and the third most populous city in the European Union by population within city limits. The Metropolitan City of Rome, with a population of 4,355,725 residents, is the most populous metropolitan city in Italy. [3]
Life expectancy at birth in the Roman Empire is estimated at about 22–33 years. [9] [notes 1] For the two-thirds to three-quarters of the population surviving the first year of life, [10] life expectancy at age 1 is estimated at around 34–41 remaining years (i.e. expected to live to age 35–42), while for the 55–65% surviving to age 5, life expectancy was around 40–45. [11]
Map of the world in 323 BC Map of the Eastern Hemisphere in 100 BC. Classical demography refers to the study of human demography in the Classical period.It often focuses on the absolute number of people who were alive in civilizations around the Mediterranean Sea between the Bronze Age and the fall of the Western Roman Empire, but in recent decades historians have been more interested in ...
The population of Europe in 2015 was estimated to be 741 million according to the United Nations, [12] which was slightly less than 11% of the world population. The precise figure depends on the exact definition of the geographic extent of Europe. The population of the European Union (EU) was 509 million as of 2015. [13]
[16] [17] The traditional population estimate of 55–60 million inhabitants [59] accounted for between one-sixth and one-fourth of the world's total population [60] and made it the most populous unified political entity in the West until the mid-19th century. [61]
The current world population growth is approximately 1.09%. [5] 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. [5] The world's literacy rate has increased dramatically in the last 40 years, from 66.7% in 1979 to 86.3% today. [13]
Due to immigration from around the world, there has been an increase in non-Christian religions. As of 2009, there were 1.0 million Muslims in Italy [120] forming 1.6 percent of population; independent estimates put the Islamic population in Italy anywhere from 0.8 million [121] to 1.5 million. [122] 50,000 Italian Muslims hold Italian citizenship.
The largest cities in Europe have official populations of over one million inhabitants within their city boundaries. These rankings are based on populations contained within city administrative boundaries, as opposed to urban areas or metropolitan areas , which necessarily have larger populations than the cities at their core.