Number of members in the House of Councillors Japan 1998-2024, by gender
As of February 2024, there were 247 members of the Japanese House of Councillors, of which around 27 percent were female. The House of Councillors is the upper house of the Japanese parliament. Once elected, members have six years of terms of service. Half of the members of the house are replaced in a regular election conducted once in three years.