Subscribe | UPI Odd Newsletter Subscribe SAN FRANCISCO, Dec. 4 (UPI) -- Website BabyCenter, based in San Francisco, said the top U.S. baby names of 2013 among families registered with the site were Jackson and Sophia. The website said Jackson took over the top spot on the boys' side of the Top 100 Baby Names of 2013, knocking 8-year champion Aiden down to the No. 2 spot. Advertisement Rounding out the top 10 on the list, which was compiled using data from about half a million families registered with the site, were Liam, Lucas, Noah, Mason, Jayden, Ethan, Jacob and Jack. BabyCenter said Sophia was the top name among girls for the four consecutive year, followed by Emma, Olivia, Isabella, Mia, Ava, Lily, Zoe, Emily and Chloe. Read More Harry, Amelia top baby names in England and Wales New Zealand's banned names: Lucifer, Christ, Anal Website: Mavis, Thor hot baby names William, Alice top Swedish baby names