"Psalm 87:1. Zion (87:1-5)
2. The population of Zion (87:4-6)
3. The joy in Zion (87:7)
God chose Zion as the place where He would meet with His people in a special sense.
Psalm 87:3 Glorious things of you are spoken, O city of God.
Psalm 87:5 And of Zion it shall be said,
This one and that one were born in her;
for the Most High Himself will establish her.
Psalm 87:6 The LORD records as He registers the peoples,
This one was born there."
Psalm.org

