Over the past 110 years, 18 188 boys have been named Issac. The name Issac ranks 737th in the United States among the most common names for boys. For the first time more than ten times newborns were named Issac in 1911. The peak of popularity of the name Issac 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.