WASHINGTON (WUSA) -- Did you welcome a baby into the world last year named Jacob or Sophia? So did many other parents, says the Social Security Administration. Jacob and Sophia were the most popular baby names for 2011. 

According to Social Security, Jacob was the top boys name for the 13th year straight. Isabella used to be the top girls name but was pushed to number two by Sophia. Anthony fell out of the top ten list of boys names and Mason made its way onto the list, entering at number two.

The Social Security Administration had this note about Mason in a press release: "Some may attribute this year's rise to number two to reality TV star Kourtney Kardashian's son. We note, moreover, that Mason has been a regular top-five name in Wisconsin for many years, undoubtedly a tribute to strong-legged Green Bay Packer kicker Mason Crosby."

Here are the top 10 boys names of 2011:

Jacob
Mason
William
Jayden
Noah
Michael
Ethan
Alexander
Aiden
Daniel

Here are the top 10 girls names of 2011:
Sophia
Isabella
Emma
Olivia
Ava
Emily
Abigail
Madison
Mia
Chloe

Click here to search most popular baby names by year, state and more. You can view names for each year since 1880 on the Social Security website.