Over the past 110 years, 12 278 girls have been named Lyndsey. The name Lyndsey ranks 1160th in the United States among the most common names for girls. For the first time more than ten times newborns were named Lyndsey in 1975. The peak of popularity of the name Lyndsey 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.