Cosimo
The boy's name Cosimo has been in the national records since 1911, with 1,016 births to its name. In 2025 it ranked 5,608th. About 500 Cosimos are alive in the United States today, and half of them are over 32.
Popularity, 1880–2025
boys named Cosimo
By the numbers
- Total US births
- 1,016
- Estimated living today
- 500
- Median age today
- 32
- Peak year
- 1927
- Best rank
- 1,350th
- Rank in 2025
- 5,608th
- First recorded
- 1911
How old the living Cosimos are
born that year still alive today
Of the 1,016 babies given the name since 1911, about 500 are alive — 49 in every hundred. The dotted line is the median: half were born before 1993 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Notable Cosimos
- Cosimo de' Medici (1389–1464)First ruler of the Medici political dynasty
- Cosimo I de' Medici, Grand Duke of Tuscany (1519–1574)Duke of Florence
- Cosimo Rosselli (1439–1507)Italian painter
- Cosimo Tura (1430–1495)Italian painter
- Cosimo II de' Medici (1590–1621)Grand Duke of Tuscany
- Cosimo III de' Medici, Grand Duke of Tuscany (1642–1723)Grand Prince of Tuscany
- Cosimo Pinto (born 1943)boxer
- Cosimo Fusco (born 1962)Italian actor
People named Cosimo with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Cosimo is most common
Relative to how many babies each state records, Cosimo is most concentrated in New York (9.5×), New Jersey (2.8×), Pennsylvania (2.1×).
Total births recorded in each state since 1910. Browse names by state.
Names of 1927
The most popular boys’ names the year Cosimo peaked:
Cosimo elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| Italy boys | Cosimo | 6,382 | — |
| France boys | Cosimo | 280 | 441st |
| England and Wales boys | Cosimo | 84 | 2,952nd |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Cosimo by city
| City | Years | Births | Best rank |
|---|---|---|---|
| Berlin boys | 2017–2023 | 6 | 434th |
One city over a few years, so these are much smaller numbers than the national ones above and not comparable with them.
Cosimo among the living
How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.
| Country | Spelling | First forename | Any forename |
|---|---|---|---|
| Finland boys | Cosimo | — | 10 |
A count of people on a register – Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.
Related names
Cosimo against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.