The first name Unknown
A unisex name.
2 syllables Unisex
Popularity in the United States
Babies named Unknown at birth, 1880–2025
In 2025, 48 girls born in the United States were named Unknown, the 3,293rd most popular girls’ name that year. It was used most in 1954, when 644 were.
GirlsBoys
19,714
babies named Unknown since 1880
#3,293
rank in 2025
1954
peak year
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Questions
- Is Unknown a boy's or a girl's name?
- Both. Of the 19,714 US babies named Unknown since 1880, 50% were girls and 50% boys.
- When was Unknown most popular?
- 1954 in the United States, when 644 babies were named Unknown, its highest rank at 336th.