Peterson vs Petros
American parents have registered 819 Petersons since 1880, against 715 Petroses. Peterson is still ahead, with 9 babies in 2025.
Babies given each name, 1880–2025
Peterson Petros
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 70 years in which either name was published, Peterson for 41 years and Petros for 29 years. The lead changed hands 15 times.
- 1950–1966 Peterson ahead
- 1967–1981 Petros ahead, apart from one short spell
- 1982–2002 Peterson ahead, apart from one short spell
- 2006–2009 Petros ahead
- 2010–2012 Peterson ahead
- 2013–2025 Petros ahead, apart from 2 short spells
6 shorter spells of a year or two are folded into the spans above rather than listed separately.
Side by side
| Peterson | Petros | |
|---|---|---|
| Total US births | 819 | 715 |
| Most in one year | 28 | 20 |
| Babies in 2025 | 9 | 9 |
| Estimated living today | 770 | 690 |
| Median age today | 31 | 27 |
| Peak year | 1989 | 2007 |
| Best rank | 2,359th boys | 4,640th boys |
| Rank in 2025 | 8,243rd | 8,243rd |
| First recorded | 1950 | 1964 |
| Girls / boys | 0 / 819 | 0 / 715 |
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 Petersons alive today are over 31; half the Petroses are over 27. That is 4 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Peterson Florida (25.8×)
- Petros New York (6.9×), California (3.8×)
How much commoner the name is in that state than it is nationally, from births recorded since 1910.
Both names abroad
Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.
| Country | Peterson | Petros |
|---|---|---|
| France | 75 | 5 |
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: Peterson and Petros.