Over the past 110 years, 15 girls and 62 027 boys have been named Jonathon. The name Jonathon ranks 14279th in the United States among the most common names for girls. For the first time more than ten times newborns were named Jonathon in 1984. The peak of popularity of the name Jonathon came in the 1980s and 1990s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.