Delaney has been given to about 46,650 people in the United States since 1880. It was most common in 2004, which makes it a millennial-parent name.
Delaney ranks 242nd among American girls in 2025, with 1,295 born that year. Its best year was 2004, when 2,030 babies were given the name, ranking 169th. The typical living American called Delaney is about 18 years old today. It is relatively most common in Maine, where it accounts for 0.16% 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.