Isao
Recorded for boysGreatest Generation2025 rank
—
not recorded in 2025
2025 births
—
All-time births
246
peak year 1925
More common than
74%
of all archived spellings recorded for boys, by lifetime births for that sex
- Peak year
- 1925
- 20 births
- Best rank
- #1,771
- in 1925
- First recorded
- 1915
- #2,239 that year
- Last recorded
- 2016
- no later published record
- Average birth year
- 1926
- weighted by recorded births
- Years recorded
- 23 of 146
- with gaps
Top five years
- 192520#1,771Peak
- 191919#1,778
- 191718#1,779
- 192218#1,925
- 192115#2,204
Rank over time
Inverted scale — nearer the top is more popular. Unrecorded years are left blank, not drawn as zero.
Best rank #1,771 in 1925 · peak births 20 in 1925
Births by decade
Where the name's whole run sits, with the best and worst rank it held in each decade
Trajectory by decade
Where Isao has ranked, decade by decade
The band spans each decade's best and worst rank; the line follows its best.
The girls' series
No girls have been recorded with this name.
Stated, not plotted as zero — the split bar and the unisex badge are omitted rather than drawn empty.