Jefferson has been given to about 24,440 people in the United States since 1880. It was most common in 2009, which makes it a millennial-parent name.
Jefferson ranks 831st among American boys in 2025, with 298 born that year. Its best year was 2009, when 444 babies were given the name, ranking 589th. The typical living American called Jefferson is about 29 years old today. It is relatively most common in Connecticut, where it accounts for 0.02% 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.