Even though the UFC rankings officially started from February 2013. Women were added to the pound-for-pound rankings for the first time in December 2013. Ronda Rousey, the then UFC Women's Bantamweight champion, became the first female fighter from UFC to debut in the rankings at No.10.
Active women fighters are ranked in the official UFC rankings by pound-for-pound and the respective weight divisions namely Strawweight, Flyweight and Bantamweight.
As there aren't enough women competing in the Women's Featherweight division, the rankings for the same are not available since they are not voted upon by MMA media members.