Mark 5:20

and he departed, and published in Decapolis, how great things Jesus had done for him, and they were all amazed.

Matthew 4:25

and great multitudes of people followed Him from Galilee, and Decapolis, and Jerusalem, and Judea, yea and from beyond Jordan.

Mark 7:31

And departing again out of the coasts of Tyre and Sidon, He came to the sea of Galilee thro' the midst of the coasts 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 departing again out of the coasts of Tyre and Sidon, He came to the sea of Galilee thro' the midst of the coasts of Decapolis.
Matthew 4:25
and great multitudes of people followed Him from Galilee, and Decapolis, and Jerusalem, and Judea, yea and from beyond Jordan.