Over the past 110 years, 167 492 girls and 3 964 boys have been named Sydney. The name Sydney ranks 211th in the United States among the most common names for girls. For the first time more than ten times newborns were named Sydney in 1914. The peak of popularity of the name Sydney came in the 1990s and 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.