Miley has been given to about 15,779 people in the United States since 1880. It was most common in 2008, which makes it a millennial-parent name.
Miley ranks 338th among American girls in 2025, with 900 born that year. Its best year was 2008, when 2,652 babies were given the name, ranking 129th. The typical living American called Miley is about 15 years old today. It is relatively most common in Idaho, where it accounts for 0.08% 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.