Arnold has been given to about 104,396 people in the United States since 1880. It was most common in 1924, which makes it a interwar name.
Its best year was 1924, when 2,031 babies were given the name, ranking 95th. The typical living American called Arnold is about 73 years old today. It is relatively most common in Minnesota, 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.