Mililani has been given to about 147 people in the United States since 1880. It was most common in 2020, which makes it a current name.
Its best year was 2020, when 17 babies were given the name, ranking 6829th. The typical living American called Mililani is about 7 years old today. It is relatively most common in California, where it accounts for 0.00% of births.
Source: US Social Security Administration, national and state name files, 2025 release. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.