Over the past 110 years, 142 415 girls have been named Heidi. The name Heidi ranks 249th in the United States among the most common names for girls. For the first time more than ten times newborns were named Heidi in 1938. The peak of popularity of the name Heidi came in the 1960s and 1970s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.