The thirteen priestly cities (see the marginal references) were all in the tribes of Judah, Simeon, and Benjamin. Thus, as Calvin remarks, God so overruled it that the priestly families were placed upon the spot which He had determined before hand to choose as the site of His temple.
Joshua 21:9-19
9 And they gave out of the tribe of the children of Judah, and out of the tribe of the children of Simeon, these cities which are here mentioneda by name,
10 Which the children of Aaron, being of the families of the Kohathites, who were of the children of Levi, had: for theirs was the first lot.
11 And they gave them the cityb of Arba the father of Anak, which city is Hebron, in the hill country of Judah, with the suburbs thereof round about it.
12 But the fields of the city, and the villages thereof, gave they to Caleb the son of Jephunneh for his possession.
13 Thus they gave to the children of Aaron the priest Hebron with her suburbs, to be a city of refuge for the slayer; and Libnah with her suburbs,
14 And Jattir with her suburbs, and Eshtemoa with her suburbs,
15 And Holonc with her suburbs, and Debir with her suburbs,
16 And Aind with her suburbs, and Juttah with her suburbs, and Bethshemesh with her suburbs; nine cities out of those two tribes.
17 And out of the tribe of Benjamin, Gibeon with her suburbs, Gebae with her suburbs,
18 Anathoth with her suburbs, and Almonf with her suburbs; four cities.
19 All the cities of the children of Aaron, the priests, were thirteen cities with their suburbs.