"Ninety-four women currently serve in the 112th Congress: 77 in the House (53 Democrats and 24 Republicans) and 17 in the Senate (12 Democrats and 5 Republicans). Ninety-two women were initially sworn in to the 112th Congress, two women Democratic House Members have since resigned, and four others have been elected. This number (94) is lower than the record number of 95 women who were initially elected to the 111th Congress. The first woman elected to Congress was Representative Jeannette Rankin (R-MT, 1917-1919, 1941-1943). The first woman to serve in the Senate was Rebecca Latimer Felton (D-GA). She was appointed in 1922 and served for only one day. A total of 278 women have served in Congress, 178 Democrats and 100 Republicans. Of these women, 239 (153 Democrats, 86 Republicans) have served only in the House of Representatives; 31 (19 Democrats, 12 Republicans) have served only in the Senate; and 8 (6 Democrats, 2 Republicans) have served in both houses. These figures include one non-voting Delegate each from Guam, Hawaii, the District of Columbia, and the U.S. Virgin Islands. […] This report identifies the names, committee assignments, dates of service, and (for Representatives) congressional districts of the 278 women who have served in Congress. It will be updated when there are relevant changes in the makeup of Congress."
CRS Report for Congress, RL30261