Ponorogo is one of the 29 regencies (kabupaten) of East Java, Indonesia. It is considered the birthplace of Reog Ponorogo, a traditional Indonesian dance form. The Regency covers an area of 1,305.70 sq. km, and it had a population of 855,281 at the 2010 Census; the latest official estimate (as at 2014) is 879,306.