Heidi has been given to about 149,687 people in the United States since 1880. It was most common in 1972, which makes it a boomer-era name.
Heidi ranks 340th among American girls in 2025, with 894 born that year. Its best year was 1972, when 4,741 babies were given the name, ranking 64th. The typical living American called Heidi is about 49 years old today. It is relatively most common in Oklahoma, where it accounts for 0.09% 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.