Colby
Recorded for both sexesGen Z2025 rank
#615
down −32 places
2025 births
455
down −35 births
All-time births
53,971
1% of them in 2025
More common than
99%
of all archived spellings recorded for boys, by lifetime births for that sex
- Peak year
- 2001
- 3,859 births
- Best rank
- #99
- in 2001
- First recorded
- 1888
- #1,067 that year
- Last recorded
- 2025
- still in the data
- Average birth year
- 1999
- weighted by recorded births
- Years recorded
- 111 of 146
- with gaps
Top five years
- 20013,859#99Peak
- 20023,118#125
- 20032,170#181
- 20042,066#185
- 20051,603#220
Rank over time
Inverted scale — nearer the top is more popular. Unrecorded years are left blank, not drawn as zero.
Best rank #99 in 2001 · peak births 3,859 in 2001
Boys and girls
Births per year for each sex, on one shared scale. The girls' series is dashed.
● 93% boys■ 7% girls
53,971 boys · 4,184 girls, all time
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 Colby has ranked, decade by decade
The band spans each decade's best and worst rank; the line follows its best.