Japan is the top country by median age in the world. As of 2015, median age in Japan was 46.3 years. The top 5 countries also includes Italy, Germany, Portugal, and Bulgaria.The description is composed by Yodatai, our digital data assistant. Have a question? Ask Yodatai ›
Median age is the age that divides a population into two numerically equal groups - that is, half the people are younger than this age and half are older.