You can keep cooked chicken in the refrigerator for up to four days. Wrap the cooked chicken in plastic wrap or place it in an airtight container. Put it in the refrigerator as quickly as possible after it cools to room temperature. Ideally, you should store it at the back of the middle shelf in your refrigerator. You can also store multi-ingredient dishes containing cooked chicken, such as chicken salad or chicken casserole, for up to four days.