Sonji
Sonji reached its high-water mark in 1966 at number 639, and has been recorded 904 times in all. It has not appeared in the national data since 1991. About 820 Sonjis are alive in the United States today, and half of them are over 58.
Popularity, 1880–2025
girls named Sonji
By the numbers
- Total US births
- 904
- Estimated living today
- 820
- Median age today
- 58
- Peak year
- 1966
- Best rank
- 639th
- Rank in 2025
- unranked
- First recorded
- 1951
How old the living Sonjis are
born that year still alive today
Of the 904 babies given the name since 1951, about 820 are alive — 91 in every hundred. The dotted line is the median: half were born before 1967 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Where Sonji is most common
Relative to how many babies each state records, Sonji is most concentrated in Georgia (4.7×), Illinois (2.9×), Florida (2.8×), New Jersey (2.6×).
Total births recorded in each state since 1910. Browse names by state.
Names of 1966
The most popular girls’ names the year Sonji peaked:
Related names
Sonji against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.