Stacy has been given to about 186,268 people in the United States since 1880. It was most common in 1971, which makes it a boomer-era name.
Its best year was 1971, when 10,144 babies were given the name, ranking 32nd. The typical living American called Stacy is about 52 years old today. It is relatively most common in New Jersey, 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.