The safe internal temperature for a fully cooked roast chicken is 165°F (74°C), measured in the thickest part of the thigh without touching the bone.
Ensuring food safety is paramount when cooking poultry. The U.S. Department of Agriculture (USDA) and other food safety authorities recommend a minimum internal temperature of 165°F (74°C) for all poultry, including whole roast chicken. This temperature effectively kills any harmful bacteria that might be present. To accurately measure this, insert a meat thermometer into the thickest part of the chicken's thigh, being careful to avoid touching any bones, as bones can conduct heat and give a falsely high reading. While the thigh is the primary indicator, it's also a good practice to check the thickest part of the breast to ensure it's cooked through; breast meat may reach a slightly higher temperature (around 170°F or 77°C) for optimal tenderness. Once the chicken reaches 165°F (74°C), remove it from the oven, as it will continue to cook slightly during the resting period (carryover cooking).
For consistency and accuracy, always use a reliable instant-read digital thermometer, as they provide quick and precise temperature readings.