Japan vs United States: Representation of women in the upper chamber of parliament

Japan
0.57 ratio
in 2026
United States
0.51 ratio
in 2026
Japan rank
38th
United States rank
41st

Representation of women in the upper chamber of parliament over time

  • Japan
  • United States
00.20.40.6202120232026

How they compare

Japan currently reports 0.57 ratio against 0.51 ratio in United States, a difference of 0.06 ratio.

That makes Japan's figure about 1.1 times United States's.

The two have swapped places 3 times across 6 shared years of data; in 2021 it was United States ahead.

Japan ranks 38th and United States ranks 41st of 71 countries.

United States has averaged higher in every one of the 1 decades both report.

Frequently asked questions

Which has higher representation of women in the upper chamber of parliament, Japan or United States?
Japan, at 0.57 ratio against 0.51 ratio in United States as of 2026.
What is the difference in representation of women in the upper chamber of parliament between Japan and United States?
0.06 ratio, with Japan ahead.
How many years of comparable data are there for Japan and United States?
6 years are reported by both, from 2021 to 2026.
How do Japan and United States rank globally for representation of women in the upper chamber of parliament?
Japan ranks 38th and United States ranks 41st of 71 countries.
Where does this data come from?
Inter-Parliamentary Union – processed by Our World in Data, published as Representation of women in the upper chamber of parliament. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Japan vs United States: Representation of women in the upper chamber of parliament. Statizoid, drawing on Inter-Parliamentary Union – processed by Our World in Data. Retrieved 18 September 2026, from https://gender.statizoid.com/compare/representation-of-women-in-the-upper-chamber-of-parliament/japan/united-states/

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About this data

Indicator
Representation of women in the upper chamber of parliament
Unit
ratio
Source
Inter-Parliamentary Union – processed by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
71 places, 424 data points, 2021–2026
Last refreshed

Ratio for female members of parliaments (Ratio of the proportion of women in parliament in the proportion of women in the national population with the age of eligibility as a lower bound boundary), Upper Chamber.