Mark 5:20

So the man went, and began to proclaim in the district of the Ten Towns all that Jesus had done for him; and every one was amazed.

Matthew 4:25

And he was followed by large crowds from Galilee, the district of the Ten Towns, Jerusalem, Judea, and from beyond the Jordan.

Mark 7:31

On returning from the district of Tyre, Jesus went, by way of Sidon, to the Sea of Galilee, across the district of the Ten Towns.

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
On returning from the district of Tyre, Jesus went, by way of Sidon, to the Sea of Galilee, across the district of the Ten Towns.
Matthew 4:25
And he was followed by large crowds from Galilee, the district of the Ten Towns, Jerusalem, Judea, and from beyond the Jordan.