Demographics
In 2005, the city had an estimated population of 1,028,214 and a population density of 1,304.69 persons per km². The city's total area was 788.09 km². Most people in the city at this time lived in urban areas close to train and subway stations. The 2000 National Census revealed that 88.5% of the city's population (892,252 people) lived in a 129.69 km² area, which is 16.6% of the city's total area. The population density in this area was 6,879.9 persons per km², more than 5 times higher than the city's average population density at that time, 1,286.6 persons per km². Approximately 10,000 people in Sendai were non-Japanese citizens.
Sendai had 444,514 households in 2005. The average household had approximately 2.31 members. The average household was becoming smaller every year, because single-member households were increasing. At this time Sendai had more people in their early 50s and in their 20s and early 30s than in other age groups. This is a result of the first and second baby booms in Japan, and university students. The average age in Sendai is 38.4, which makes the city one of the youngest major cities in Japan.
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