Over the past 110 years, 187 girls and 11 161 boys have been named Kieran. The name Kieran ranks 7005th in the United States among the most common names for girls. For the first time more than ten times newborns were named Kieran in 1988. The peak of popularity of the name Kieran 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.