Siddhartha vs Sidnee
American parents have registered 636 Sidnees since 1880, against 534 Siddharthas. But in 2025 it was Siddhartha that was commoner, 11 babies to fewer than five.
Babies given each name, 1880–2025
Siddhartha Sidnee
Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.
Who was ahead
Of the 50 years in which either name was published, Sidnee for 27 years and Siddhartha for 23 years. The lead changed hands 3 times.
- 1940–1952 Sidnee ahead
- 1970–1984 Siddhartha ahead
- 1988–2011 Sidnee ahead
- 2012–2025 Siddhartha ahead
Side by side
| Siddhartha | Sidnee | |
|---|---|---|
| Total US births | 534 | 636 |
| Most in one year | 33 | 39 |
| Babies in 2025 | 11 | under 5 |
| Estimated living today | 520 | 620 |
| Median age today | 15 | 24 |
| Peak year | 2015 | 1999 |
| Best rank | 3,365th boys | 3,245th girls |
| Rank in 2025 | 7,194th | unranked |
| First recorded | 1970 | 1940 |
| Girls / boys | 0 / 534 | 636 / 0 |
A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.
Which name is older
Half of the Sidnees alive today are over 24; half the Siddharthas are over 15. That is 9 years between them: two names in use at the same time, worn by two different generations.
Both names abroad
Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.
| Country | Siddhartha | Sidnee |
|---|---|---|
| England and Wales | 78 | 3 |
Every spelling a country files separately is added together, over whatever years that country publishes — which is not the same range in any two of them, so read the columns against each other and not the rows.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Siddhartha and Sidnee.