The Jordan River borders it on the east. These were the borders of the land assigned to the tribe of Benjamin by its clans. ¹ 

It then turned on the west side southward from the hill near Beth Horon on the south and extended to Kiriath Baal (that is, Kiriath Jearim), a city belonging to the tribe ¹  of Judah. This is the western border. ² 

The eastern border was the Salt Sea to the mouth ¹  of the Jordan River. ²  The northern border started north of the Salt Sea at the mouth of the Jordan, ³ 

The southern side started on the edge of Kiriath Jearim and extended westward to the spring of the waters of Nephtoah.

Their northern border started at the Jordan, went up to the slope of Jericho ¹  on the north, ascended westward to the hill country, and extended to the desert of Beth Aven.