Meaning and name origin
Isiah \i-siah\ as a boy's name is of Hebrew origin, and the meaning of Isiah is "God is salvation". Isiah is a variant of Isaiah (Hebrew); biblical: one of the major prophets and writer of the Book of Isaiah. Somewhat unusual as a boys' name.
Isiah is a somewhat popular first name for males (#861 out of 1220, Top 71%) but an uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is the baby name popularity of the name Isiah for boys. Isiah reached its highest rank of #319 in the U.S. in 1890-1899 (Source: 2014 Birth Name Statistics).
Displayed below is a comparison of the popularity of the boy name Isiah and its variant forms. Popular variation forms ranked in the Top 1000/100 are Isaiah (#48), Izaiah (#459) and Isiah. (Source: 2014 Birth Name Statistics).