Over the past 110 years, 1 145 boys and 111 278 girls have been named Isabel. The name Isabel ranks 2417th in the United States among the most common names for boys. For the first time more than ten times newborns were named Isabel in 1910. The peak of popularity of the name Isabel came in the 1910s and 1940s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.