Every name given to a US baby since 1880, ranked year by year — straight from Social Security Administration birth records. 105,966 names · 375,362,447 births · public domain.

Seiichi

#21,026 most common boys' name of all time · #55,375 across all names · 100% male / 0% female · used 1919–1926

Rank among boys
#21,026
Rank overall
#55,375 of 105,966
First appeared
1919
Years on the list
6 of 146
All-time
40
Since 2016
0
Peak year
1920 #3,468
Best rank
#3,388 1919
Girls Boys peak 8/yr
1920

Seiichi first appears in 1919. That's the first year it was given to at least 5 US babies, which is the threshold below which the SSA withholds a name.

Year by year

YearGirlsBoysTotalRank
1926 — 6 6 #4,105
1925 — 7 7 #3,708
1924 — 6 6 #4,262
1923 — 5 5 #4,737
1920 — 8 8 #3,468
1919 — 8 8 #3,388