Dibble is a town in McClain County, Oklahoma, United States. The population within city limits was 878 at the 2010 census. The town was named after two brothers, James and John Dibble.The community has 8,868 residents in its 73031 zipcode, according to Sperling's Best Places. Dibble is in the outer suburban area west of Purcell, OK, and southwest of Norman, OK, in the Oklahoma City Metropolitan Area, according to the U.S.