Niles has been given to about 4,455 people in the United States since 1880. It was most common in 1998, which makes it a Gen X and millennial name.
Its best year was 1998, when 80 babies were given the name, ranking 1428th. The typical living American called Niles is about 35 years old today. It is relatively most common in Washington, where it accounts for 0.01% 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.