Mean age of marriage Japan 1955-2023, by gender
Men and women in Japan are getting married increasingly later than previous generations. In 2023, the average age of women who marry for the first time was about 29.7 years, while men were on average 31.1 years old when they first got married.
Social integration of women
The rising age at first marriage was partly explained by a common theory that holds the growing number of “parasite singles” accountable for the trend. The term refers to young working people aged between 28 and 40 years who decide to keep living comfortably in their parents' homes to save money. An alternative explanation is the more active participation of Japanese women in society. Increasingly more women in Japan obtain higher education degrees and focus on their career paths. With a rising income, they are financially less dependent, and marriage is no longer essential to afford the life they pursue.
Delayed family planning
The overall number of newly registered marriages has also declined in the past decade. The reported number of marriages was around 474,740 in 2023, representing the sixth consecutive years below 600,000. These developments concerning marriages have also impacted the mean age of childbearing, which has risen considerably since the 1970s.
