Sophia and Jackson continue to be the most popular baby names, according to BabyCenter's Top 100 names list for 2015.
The list is compiled from data provided by 340,000 parents who shared their baby's name with the website.
An official government list for the prior year is usually released around Mother's Day, a Social Security Administration spokeswoman said. Last year, the names Noah and Emma were the top baby names indicated by Social Security's list.
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According to BabyCenter, the names Emma and Olivia continue to be No. 2 and No. 3 for the fourth year in-a-row. Jackson is in its third year as the top name for boys, followed by Aiden, Liam, Lucas, Noah and Mason.
For girls' names, Mia swapped with Isabella at the fifth spot and Madison has fallen out of the list and was replaced by Madelyn at number 10.
In the boys category, Logan is now in the ninth spot switching with Jacob to round out the bottom of the top 10.
BabyCenter combined names that sound the same but have multiple spellings in contrast to Social Security's method. The administration instead counts differently spelled names in distinct ranks.
BabyCenter's most popular names for girls:
BabyCenter's most popular names for boys: