Judy has been given to about 384,073 people in the United States since 1880. It was most common in 1947, which makes it a midcentury name.
Its best year was 1947, when 21,073 babies were given the name, ranking 14th. The typical living American called Judy is about 75 years old today. It is relatively most common in Michigan, 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.