Niall is a moderately popular boys' name in England & Wales, ranking #122 in 2000 with 354 recorded births. This places Niall in the top 3% of ranked UK boys' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 1996 with 462 births ranking #106. Since 1996, the popularity has decreased by 23.4%. In 2000, approximately 1 in every 828 boys born was named Niall. FALLING Recent data shows the name is currently falling.