Alexa is a moderately popular girls' name in England & Wales, ranking #483 in 2005 with 74 recorded births. The name reached its all-time peak in 2011 with 353 births ranking #152. Since 1996, the popularity has increased by 131.3%. In 2005, approximately 1 in every 3,895 girls born was named Alexa. FALLING Recent data shows the name is currently falling.