From the name of a city mentioned in the Bible which is now located in Palestine. The meaning of the name is debated, some sources claim the name is from a Caananite word reah meaning “fragant” or the Canaanite word for moon (yareah), as the city was once the centre of worship for the Caananite moon-god Yarikh. Yarikh’s name also appears as Jarah, Jerah and Jorah. In modern times, the name is referred to as ʼArīḥā, in Arabic, meaning “fragrant.”
It’s use as a given name can possibly be traced to the 16th-century. Records indicate a scattering of Jereachs and Jerichs in England, and Jerigos in Germany is attested to many times, though I cannot tell if these are related to Jericho or if they are a form of George or Jeorg. Jericho definitely comes up in records by the 18th-century both in England and the United States.
The name first appeared in the U.S. top 1000 in 2013 and currently ranks in as the 932nd most popular male name.
A possible short form is Jerry.
The name appears in other languages in the following manner, though keep in mind that most of these are anecdotal.
Ijeryhon/Jeryhon Іерыхон Ерыхон (Belarusian)
Jerihon Йерихон (Bulgarian/Serbo-Croatian)
Ierihón Иерихо́н (Chuvash)
Ierikoni იერიქონი (Georgian)
Iericho Ιεριχώ (Modern Greek)
Ierihon Иерихон (Romanian/Russian)
Yeryxon Єрихон (Ukrainian)