Investigators said Bennet and Taylor used San Bruno addresses that were false to try to get aid, gift cards and free food.
Two others, 44-year-old Sonya Smith and 42-year-old Lisa Justin, both of San Bruno, have also been charged with a similar scam.
Seven people were killed when a Pacific Gas and Electric Co. pipeline blew up on September 9. The blast and fireball also destroyed almost 40 homes.
The Associated Press contributed to this report.