Mark 5:20

Decapolis : a large region south of the Sea of Galilee mainly east of the Jordan
(33° 31´, 36° 18´)

Matthew 4:25

Decapolis : a large region south of the Sea of Galilee mainly east of the Jordan
(33° 31´, 36° 18´)

Galilee : the region of Palestine north of Sameria and west of the upper Jordan River,a region west of Lake Galilee and north of the Jezreel Valley
(31° 51´, 35° 31´); (32° 42´, 35° 18´); (31° 51´, 35° 31´); (32° 1´, 35° 13´); (32° 48´, 35° 35´)

Jerusalem : the capital city of Israel,a town; the capital of Israel near the southern border of Benjamin
(31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´)

Jordan : the river that flows from Lake Galilee to the Dead Sea,a river that begins at Mt. Hermon, flows south through Lake Galilee and on to its end at the Dead Sea 175 km away (by air)
(32° 18´, 35° 33´)

Judea : a region that roughly corresponded to the earlier kingdom of Judah
(31° 46´, 35° 14´); (31° 46´, 35° 14´)