Over the past 110 years, 87 girls and 216 862 boys have been named Isaiah. The name Isaiah ranks 8977th in the United States among the most common names for girls. For the first time more than ten times newborns were named Isaiah in 1993. The peak of popularity of the name Isaiah came in the 1990s and 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.