Over the past 110 years, 10 639 boys have been named Izaiah. The name Izaiah ranks 942th in the United States among the most common names for boys. For the first time more than ten times newborns were named Izaiah in 1991. The peak of popularity of the name Izaiah came in the 2000s and 2010s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.