What is the customer service number for mcdonalds? McDonald Customer Service Phone Number. The Customer Service Phone Number of McDonald is: +1 800-244-6227, (803)648-2518. McDonald's is most popular name for burgers as it is among the largest and strongest fast food restaurant chain among the world.What is mcdonalds corporate office address? People can use this contact details to contact them and get their concern or query answered quickly. McDonalds Corporate Office Number Address: 1 McDonald’S Plaza Oak Brook, IL 60523 United States. McDonalds Corporate Office Number Phone Number Toll Free: 1-(630) 623-3000.Where is mcdonalds head office? Head Office. The McDonald’s head office is located in East Finchley, London. It houses several departments of the company including production, recruitment, HR and payroll.What is the address for mcdonalds headquarters? McDonald’s HQ Address: 1 Mcdonald’S Plaza, Oak Brook, IL,60523, United States. McDonald’s HQ Phone Number: (630) 623-3000.