The Levites won't inherit territories within the promised land in the same way as the other tribes. Instead they will be given towns located within the territories of the other tribes. Their lives will primarily revolve around service at the tabernacle, although they will be allowed to own livestock. Their main job won't be to work as cattle ranchers or sheepherders but pastures will be allotted to them for the use of their livestock.
After looking at the properties given to the Levites we will learn that there are some cities within the promised land to be set aside as cities of refuge to which persons accused of murder may flee until their cases can be heard. This is intended to help prevent vigilante justice from being carried out by the relatives of the deceased person.
"On the plains of Moab by the Jordan across from Jericho, the Lord said to Moses, 'Command the Israelites to give the Levites towns to live in from the inheritance the Israelites will possess. And give them pasturelands around the towns. Then they will have towns to live in and pasturelands for all the cattle they own and all their other animals.'" (Numbers 35:1-3) The Lord had said to the Levites through Aaron the high priest, "You will have no inheritance in their land, nor will you have any share among them; I am your share and your inheritance among the Israelites." (Numbers 18:20) Though the Levites won't be given a territory for their tribe, they must have places to live, and some of the towns will be set aside for this along with the pastureland right outside the towns. The Levites are family men just like men of other tribes. They have wives and children and they need places to call home. Those places will be in the cities of Canaan.
"The pasturelands around the towns that you give the Levites will extend a thousand cubits from the town wall. Outside the town, measure two thousand cubits on the east side, two thousand on the south side, two thousand on the west and two thousand on the north, with the town in the center. They will have this area as pastureland for the towns." (Numbers 35:4-5) Below is a map that outlines the cities given to the Levites in the book of Joshua.