Over the past 110 years, 5 girls and 22 676 boys have been named Johnathon. The name Johnathon ranks 20173th in the United States among the most common names for girls. For the first time more than ten times newborns were named Johnathon in 2004. The peak of popularity of the name Johnathon came in the 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.