Matthew 4:25
And there followed him great multitudes of people from Galilee, and from Decapolis, and from Jerusalem, and from Judaea, and from beyond Jordan.
Nave's Topical Index—AKJV

Mark 5:20
And he departed, and began to publish in Decapolis how great things Jesus had done for him: and all men did marvel.
Nave's Topical Index—AKJV

Mark 7:31
And again, departing from the coasts of Tyre and Sidon, he came to the sea of Galilee, through the middle of the coasts of Decapolis.
Nave's Topical Index—AKJV