Japan Sets Record for Citizens Over Age 100 — Here’s Exactly How Many There Are The oldest person in Japan is 114 years old. Yes, you read that number correctly: nearly 100,000 people living in Japan are age 100 or older. If so many people are living over the age of 100 in Japan, how old, you may be wondering, are the oldest man and oldest woman living in Japan? All told, there are 87,784 women age 100 and above living in Japan, and 11,979 men age 100 and older living in Japan. According to the Pew Research Center, as of January 2024, there were an estimated 101,000 Americans age 100 and older.