The noun Ioudaia (Judea) in the Gospels-Acts

(Translation from NRSV with a few modifications for a more litteral meaning)

Legend:
Blue color: Ioudaia = all of Palestine, the territory of the Jews
Red color: Ioudaia = only to the mountainous part of southern Palestine

Matthew

2: 1In the time of King Herod, after Jesus was born in Bethlehem of Judea (Ioudaia), wise men from the East came to Jerusalem,
2: 5They told him, "In Bethlehem of Judea (Ioudaia); for so it has been written by the prophet:
2: 22But when he heard that Archelaus was ruling over Judea (Ioudaia) in place of his father Herod, he was afraid to go there. And after being warned in a dream, he went away to the district of Galilee.
3: 1In those days John the Baptist appeared in the wilderness of Judea (Ioudaia), proclaiming,
3: 5Then the people of Jerusalem and all Judea (Ioudaia) were going out to him, and all the region along the Jordan,
4: 25And great crowds followed him from Galilee, the Decapolis, Jerusalem, Judea (Ioudaia), and from beyond the Jordan.
19: 1When Jesus had finished saying these things, he left Galilee and went to the region of Judea (Ioudaia) beyond the Jordan.
24: 16then those in Judea (Ioudaia) must flee to the mountains;

Mark

1: 5And people from the whole Judea (Ioudaia)'s countryside and all the people of Jerusalem were going out to him, and were baptized by him in the river Jordan, confessing their sins.
3: 7Jesus departed with his disciples to the sea, and a great multitude from Galilee followed him; and from Judea (Ioudaia)
10: 1He left that place and went to the region of Judea (Ioudaia) and beyond the Jordan. And crowds again gathered around him; and, as was his custom, he again taught them.
13: 14"But when you see the desolating sacrilege set up where it ought not to be (let the reader understand), then those in Judea (Ioudaia) must flee to the mountains;

Luke

1: 5In the days of King Herod of Judea (Ioudaia), there was a priest named Zechariah, who belonged to the priestly order of Abijah. His wife was a descendant of Aaron, and her name was Elizabeth.
1: 65Fear came over all their neighbors, and all these things were talked about throughout the entire hill country of Judea (Ioudaia).
2: 4Joseph also went from the town of Nazareth in Galilee to Judea (Ioudaia), to the city of David called Bethlehem, because he was descended from the house and family of David.
3: 1In the fifteenth year of the reign of Emperor Tiberius, when Pontius Pilate was governor of Judea (Ioudaia), and Herod was ruler of Galilee, and his brother Philip ruler of the region of Ituraea and Trachonitis, and Lysanias ruler of Abilene,
4: 44So he continued proclaiming the message in the synagogues of Judea (Ioudaia).
5: 17One day, while he was teaching, Pharisees and teachers of the law were sitting near by (they had come from every village of Galilee and Judea (Ioudaia) and from Jerusalem); and the power of the Lord was with him to heal.
6: 17He came down with them and stood on a level place, with a great crowd of his disciples and a great multitude of people from all Judea (Ioudaia), Jerusalem, and the coast of Tyre and Sidon.
7: 17This word about him spread throughout Judea (Ioudaia) and all the surrounding country.
21: 21Then those in Judea (Ioudaia) must flee to the mountains, and those inside the city must leave it, and those out in the country must not enter it;
23: 5But they were insistent and said, "He stirs up the people by teaching throughout all Judea (Ioudaia), from Galilee where he began even to this place."

John

3: 22After this Jesus and his disciples went into the Judea (Ioudaia)'s countryside, and he spent some time there with them and baptized.
4: 3he left Judea (Ioudaia) and started back to Galilee.
4: 47When he heard that Jesus had come from Judea (Ioudaia) to Galilee, he went and begged him to come down and heal his son, for he was at the point of death.
4: 54Now this was the second sign that Jesus did after coming from Judea (Ioudaia) to Galilee.
7: 1After this Jesus went about in Galilee. He did not wish to go about in Judea (Ioudaia) because the Jews were looking for an opportunity to kill him.
7: 3So his brothers said to him, "Leave here and go to Judea (Ioudaia) so that your disciples also may see the works you are doing;
11: 7Then after this he said to the disciples, "Let us go to Judea (Ioudaia) again."

Acts

1: 8But you will receive power when the Holy Spirit has come upon you; and you will be my witnesses in Jerusalem, in all Judea (Ioudaia) and Samaria, and to the ends of the earth."
2: 9Parthians, Medes, Elamites, and residents of Mesopotamia, Judea (Ioudaia) and Cappadocia, Pontus and Asia,
8: 1And Saul approved of their killing him. That day a severe persecution began against the church in Jerusalem, and all except the apostles were scattered throughout the countryside of Judea (Ioudaia) and Samaria.
9: 31Meanwhile the church throughout Judea (Ioudaia), Galilee, and Samaria had peace and was built up. Living in the fear of the Lord and in the comfort of the Holy Spirit, it increased in numbers.
10: 37That message spread throughout Judea (Ioudaia), beginning in Galilee after the baptism that John announced:
11: 1Now the apostles and the believers who were in Judea (Ioudaia) heard that the Gentiles had also accepted the word of God.
11: 29The disciples determined that according to their ability, each would send relief to the believers living in Judea (Ioudaia);
12: 19When Herod had searched for him and could not find him, he examined the guards and ordered them to be put to death. Then he went down from Judea (Ioudaia) to Caesarea and stayed there.
15: 1Then certain individuals came down from Judea (Ioudaia) and were teaching the brothers, "Unless you are circumcised according to the custom of Moses, you cannot be saved."
21: 10While we were staying there for several days, a prophet named Agabus came down from Judea (Ioudaia).
26: 20but declared first to those in Damascus, then in Jerusalem and throughout the countryside of Judea (Ioudaia), and also to the Gentiles, that they should repent and turn to God and do deeds consistent with repentance.
28: 21They replied, "We have received no letters from Judea (Ioudaia) about you, and none of the brothers coming here has reported or spoken anything evil about you.