The data in the table has been compiled by the Inter-Parliamentary Union on the basis of information provided by National Parliaments by 31 January 2011. 188 countries are classified by descending order of the percentage of women in the lower or single House.
In the United States of America, of the 435 members of the House of Representatives, 73 or 16.8%, are women, making it tied with Turkmenistan for 72nd place. Incidentally, 17 of the 100 U.S. Senators (17.0%) are female.