See this verse explained Ezekiel 45:5. The Levites portion ran parallel with the priest s, whose northern limits were next to the southern limits of the Levites.
Related Commentaries of Ezekiel 48:13
Ezekiel 48:13
13 And over against the border of the priests the Levites shall have five and twenty thousand in length, and ten thousand in breadth: all the length shall be five and twenty thousand, and the breadth ten thousand.