Justin has been given to about 794,273 people in the United States since 1880. It was most common in 1988, which makes it a Gen X and millennial name.
Justin ranks 233rd among American boys in 2025, with 1,512 born that year. Its best year was 1988, when 35,296 babies were given the name, ranking 7th. The typical living American called Justin is about 36 years old today. It is relatively most common in District of Columbia, where it accounts for 0.13% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.