Gender in Japan 15 indicators covering gender for Japan. IndicatorLatest Year10-yr change Rank Age population, age 00, female, interpolated 367,041 2025 down 24.2% 39th Age population, age 00, male, interpolated 384,885 2025 down 24.7% 39th Age population, age 01, female, interpolated 368,886 2025 down 24.6% 38th Age population, age 01, male, interpolated 386,553 2025 down 25.0% 38th Age population, age 02, female, interpolated 378,555 2025 down 24.2% 37th Age population, age 02, male, interpolated 396,805 2025 down 24.5% 37th Age population, age 03, female, interpolated 393,277 2025 down 22.2% 37th Age population, age 03, male, interpolated 412,389 2025 down 22.6% 37th Age population, age 04, female, interpolated 405,844 2025 down 20.9% 36th Age population, age 04, male, interpolated 425,727 2025 down 21.5% 35th Age population, age 05, female, interpolated 418,873 2025 down 19.5% 34th Age population, age 05, male, interpolated 439,568 2025 down 20.0% 33rd Age at first marriage, female 29.2 2015 down 0.7% 35th Age at first marriage, male 30.5 2015 down 1.9% 44th Maternal leave benefits 67.0% 2017 unchanged 118th