Mark 5:20

And he went away and proclaimed in the Decapolis what great things Jesus had done for him; and all wondered.

Matthew 4:25

and great multitudes followed him from Galilee, and Decapolis, and Jerusalem, and Judea, and beyond the Jordan.

Mark 7:31

And again going out of the bounds of Tyre, he came through Sidon, to the lake of Galilee, in the midst of the bounds of Decapolis.

Treasury of Scripture Knowledge

Summary

And he departed, and began to publish in Decapolis how great things Jesus had done for him: and all men did marvel.

Bible References

Decapolis

Mark 7:31
And again going out of the bounds of Tyre, he came through Sidon, to the lake of Galilee, in the midst of the bounds of Decapolis.
Matthew 4:25
and great multitudes followed him from Galilee, and Decapolis, and Jerusalem, and Judea, and beyond the Jordan.