In 2025, 80 US boys were named Aj, making it the 1,932nd most common boys’ name of the year, up 414 places from #2,346 in 2024. That is 20 more than the 60 boys named Aj in 2024. Its best rank for boys was #1,546, reached in 1985. The most boys given the name in a single year was 86, in 2012. For comparison, it was #1,983 in 2015 and unranked in 1950.
Social Security card records list Aj in 58 years of the 146 from 1880 to 2025, starting in 1961 with 5 babies. In all, 2,499 US babies have been given the name, 1.7% of them girls and 98% boys. Its busiest decade was the 2010s, with 766 babies named Aj.
Over the 10 years from 2016 to 2025, 740 US boys were named Aj; the busiest of those years was 2025, with 80. In 2025 that was about 1 in 21,351 of the boys in SSA’s list for the year.
Among the states, Aj ranked highest in Washington in 2025, at #1,000 for boys there. It was not in the top 100 of any state.