Joshua 21:42

These cities were everyone with their suburbs round about them,.... Which reached to the space of two thousand cubits on every side; and such a space was assigned to everyone of the above cities for their cattle, to keep them in and lay up provision for them:

thus [were] all their cities; six of them cities of refuge, and forty two for the priests and Levites to dwell in, and for the commodious use of their herds and flocks.