Boy name
Kaius
Kaius holds the #1028 spot on the 2025 list of the most popular boy names in the U.S. That amounts to 216 newborn boys in a single year. The ranking has held remarkably steady over the last five years. Its strongest year on record was 2020 (#1023 nationally, 202 newborns), in a data series reaching back to 2005. The name's biggest fan base is in Louisiana (#672 there in 2025).
Rankings
2025 rank
#1028
among boy names
Trend
Stable
last 5 years
All-time peak
#1023
in 2020 (2020s)
Babies in 2025
216
boys named Kaius
Kaius popularity, 1880–2025
Where Kaius is most popular
Share of boys born in 2025:lowhighno data (< 5 births)
Strongest states: Louisiana (#672), Wisconsin (#678), Missouri (#709)
Uniqueness score
54/ 100Balanced
everywhereone of a kind
Well known, but far from crowded — the middle of the field. Based on how many babies per birth were named Kaius in the most recent year of SSA data.