Liam continued to remain in the top 33 most popular boys names in the UK throughout the first decade of the 21st century but started to steadily decline in 2009.

Meanwhile, according to the Social Security Administration, Liam had been steadily gaining in popularity in the United States and entered the top 50 names for the first time in 2009 at number 49. As Liam gained popularity in the US, climbing to number two by 2013, popularity in the UK plummeted, and it ranked 67th that