How long is ground beef good for once it thawed?

According to the United States Department of Agriculture (USDA), once ground beef is thawed in the refrigerator, it can be stored for an additional 3 to 5 days before cooking or freezing. If the ground beef was thawed in a microwave or cold water, it should be cooked immediately. Cooked ground beef can be stored in the refrigerator for up to 3 to 4 days.