The first mention of Jericho in the Bible is from Numbers 22:
1 Then the people of Israel set out and camped in the plains of Moab beyond the Jordan River at Jericho. 2 And Balak the son of Zippor saw all that Israel had done to the Amorites. 3 And Moab was in great dread of the people, because they were many. Moab was overcome with fear of the people of Israel. (Numbers 22:1-3)
Jericho has a population of approximately 20,000. It is believed by some to be the oldest continuously occupied settlement in the world.
The present city was captured by Israel after the Six-Day War in 1967. It was the first city handed over to Palestinian Authority control in 1994, in accordance with the Oslo accords. After a period of Israeli readministration, it was returned to the Palestinian Authority on 16 March 2005.
Biblical Archeology: "City of Jericho"