section_path: Demographics/Age structure and average age
section_name: Age structure and average age
paragraph_text: Age structure and average age
  
  In 2021, Tokyo's average and median ages were both 45.5 years old. This is below the national median age of 49.0, placing Tokyo among the youngest regions in Japan. 16.8% of the population was below 15, while 34.6% was above 65. In the same year, the youngest municipalities in Tokyo were Mikura-jima (average age 40.72), Chuo (41.92), and Chiyoda (42.07), while the oldest included Okutama (59.11) and Miyake (53.82).