Over the past 110 years, 18 972 girls and 5 boys have been named Londyn. The name Londyn ranks 920th in the United States among the most common names for girls. For the first time more than ten times newborns were named Londyn in 1996. The peak of popularity of the name Londyn 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.