American Tract Society Bible Dictionary
(From the Greek words, deka, ten, and polis, a city,) a country in Palestine, which contained ten principal cities, on both of the Jordan, chiefly east, Matthew 4:25; Mark 5:20; 7:31 . According to Pliny, they were, Scythopolis, Philadelphia, Raphanae, Gadara, Hippos, Dios, Pella, Gerasa, Canatha, and Damascus. Josephus inserts Otopos instead of Canatha. Though within the limits of Israel, the Decapolis was inhabited by many foreigners, and hence it retained a foreign appellation. This may also account for the numerous herds of swine kept in the district, Matthew 8:30; a practice which was forbidden by the Mosaic Law.
These files are public domain and are a derivative of the topics are from American Tract Society Bible Dictionary published in 1859.
Rand, W. W. Entry for 'Decapolis'. American Tract Society Bible Dictionary. https://www.studylight.org/dictionaries/eng/ats/d/decapolis.html. 1859.