Address:One McDonald's PlazaOak Brook, IL 60523 USAPhone Numbers:Corporate Phone Number: 1-630-623-3000Corporate Fax Number: 1-630-623-5700Corporate Email: [email protected] Corporate Stock Symbol: MCDMcDonalds is a famous for their fast food restaurants that serve hamburgers. McDonalds was the pioneer in American Fast Food. McDonalds is the of the premier fast-food restraunt in the US.McDonalds Customer Service Number is 1-800-244-6227. The company does encourage users to use their technical support system and help forums on their website.