Jacob was renamed Israel. The descendants of Jacob are known as Israelites. Israel is a person not a land.
The term Israelite is the English name for the descendants of the biblical patriarch Jacob in ancient times, which is derived from the Greek Ἰσραηλῖται,[34] which was used to translate the Biblical Hebrew term b’nei yisrael, יִשְׂרָאֵל as either “sons of Israel” or “children of Israel”.[35]
The name Israel first appears in the Hebrew Bible in Genesis 32:29. It refers to the renaming of Jacob, who, according to the Bible, wrestled with an angel, who gave him a blessing and renamed him Israel because he had “striven with God and with men, and have prevailed”.