Derek has been given to about 239,969 people in the United States since 1880. It was most common in 1989, which makes it a Gen X and millennial name.
Derek ranks 284th among American boys in 2025, with 1,191 born that year. Its best year was 1989, when 8,402 babies were given the name, ranking 54th. The typical living American called Derek is about 38 years old today. It is relatively most common in Rhode Island, where it accounts for 0.11% 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.