Tokyo’s 23 wards have as many as 15 city blocks that would be classed as ‘marginal villages’ due to their aging demographics. A marginal village is one where over 50% of the residents are over the age of 65.
The Asahi Shimbun newspaper used census data from 2020 to create a list of the oldest neighborhoods in Tokyo. Of the approximately 3,000 city blocks in the 23 wards, 15 are marginal villages.