How popular is Alexa? In 2015 the very popular name Alexa, ranked the 32nd Most Popular Girls Name in the United States. Presently one of the top 50 most popular, Alexa has been less popular than the top 1000 in the past. Position 32, its highest popularity RANKING, was reached for the first time this year. However, the name was bestowed upon the greatest number of babies in 2006 with 6,110 occurrences.