The population of Tehran is older than the population of other cities. The mean age of the population is 31.2, whereas the mean age of the population in the country is 27.9. However, distribution of various age groups in the city is not homogenous. The districts with the most young population (24 to 27 years old) are situated in the outskirts whereas the districts with the oldest population (age average: 36) are concentrated in the north of the city. As shown in the map, there is a negative correlation between mean age and the distance from the city center. That is, the further from the city center to the outskirts, the less the mean age. This is due to the migration of young people to the outskirts of the city. As with the whole country, the majority of the population of Tehran consists of potentially active people. This is due to reduction of birth rate in recent years and the entrance into labor market of the population below 15 years of age. It is to be noted that the potentially active population, that is, the age group of 15-64, shows a growth rate several times as much as that of the inactive and the total population of the country. This figure is 75.3% for the city of Tehran, and 73.6% for Tehran province, whereas the figure for the country is 69.83%. Naturally, the rate is higher in Tehran metropolis because young and adult people have migrated to this city. The map of typology of age groups of Tehran shows that the geography of age group has a certain pattern. The southern regions (regions bordering with Rey and Islamshahr), have the greatest number of population with ages between 0 and 14 (22 to 26%). This is due to the higher migration and fertility rate in this district. On the other hand, these districts have lowest old population. The old population is mainly concentrated in the northern regions of the city. The potentially active population (aged between 15 and 64) are concentrated in the northern half of the city. Generally, the old buildings in recent years have encouraged the people living in these districts to stay, giving an end to the negative population growth. Generally, based on Tehran’s population age map, it can be said that the older people live in central and northern districts, children are concentrated in southern and suburban districts and the potentially active population in the northern half of the city. The main age groups are not distributed equally in various districts of the city. With 25.6% and 24.9%, region 4 (district 15) and region 3 (district 19) have the greatest percent of population with 0–14 years of age respectively. In other words, the population with 0-14 years of age was born before the census, which means that the women in the said districts had a higher fertility.


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With 9.9% and 10%, region 7 (district 20) and region 6 (district 3) have the lowest percent of population with 0–14 years of age respectively. Region 3 (district 6) and region 6 (district 3) have the greatest percent of population aged 65 and over with 12.5% and 11.9% respectively. Region 6 (district 14) has the least percent (0.25%) of the population aged 65 and over while region 4 (district 9) has the greatest percent (84%) of the population aged 15-64, followed by region 1 (district 6) with 81.2%. Region 6 (district 16) has the least percent (70%) of the population aged 15-64, followed by region 4 (district 12) with 70.6%. In all the districts the population aged 15-64 form at least 70 percent of the population in that district.
Table 2.5 Major age groups and the average age of population in the country, province and city of Tehran (2006)

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Population 0-14 years old (2006)

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Population 0-14 years old (1996)

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Population 15-64 years old (2006)

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Population 15-64 years old (1996)

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Population of 65 years old and more
(2006)

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Population of 65 years old and more
(1996)

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Age average (2006)

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Age average (1996)

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