Numbers 26:3
And Moses and Eleazar the priest spake with them in the plains of Moab by Jordan near Jericho, saying,
Cross-reference
Numbers 26:63 concludes the census with the same location and leaders mentioned here — forming an inclusio.
Numbers 31:12 uses the exact same location phrase 'plains of Moab by the Jordan at Jericho' for the return from battle.
Numbers 33:48 records Israel camping in the same 'plains of Moab by the Jordan at Jericho' during their journey.
Numbers 35:1 also places God's speech to Moses in the 'plains of Moab by the Jordan at Jericho'.
Numbers 36:13 concludes the commandments given 'in the plains of Moab by the Jordan at Jericho' — same setting.
Numbers 22:1 establishes the same location (plains of Moab) where this census occurs — providing context.
Deuteronomy 34:1 says Moses went up from the 'plains of Moab' to Mount Nebo, linking the location.
Deuteronomy 34:8 explicitly mentions mourning in the 'plains of Moab', the same location as the census.
Deuteronomy 4:46-49 describes the same region beyond the Jordan, the territory of Sihon, where Moses gave the law.