Ada is a city in and the county seat of Pontotoc County, Oklahoma, United States. The population was 16,810 at the 2010 census, an increase. Show Me Schools. View 10 Popular Schools ยป. Learn how to become an assistant district attorney. Research the education and career requirements, licensure. PRE-ENROLL NOW BY CLICKING ON THE LINKS TAB! Welcome to Central Oklahoma Dance Center! We are glad you’re visiting our website! Look…