Calyx
#6,514 in 2025UnisexBoys' nameGirls' nameMeaning not yet documented
Calyx has been given to 227 babies in the U.S. since 2007. In 2025 it ranked #6,514 of 13,926 boys’ names in use. Its peak year was 2022, with 20 recorded. It's used for both sexes: 80% boys, 20% girls all-time.
Babies named Calyx, 2025
1 in 255,000
Calyx over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
Girls or boys — Calyx over time
In 2025, Calyx went to 0% girls and 100% boys.
A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.
How common is Calyx?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 255,000
- 13 of 3,315,165 births
- Among boys only
- 1 in 131,000
- <0.01% of boys
- Rank, 2025
- #6,514
- of 13,926 boys’ names in use
- Coin-flip room size
- 176,762 kids
- Even odds of a second one
Where Calyx sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 176,762 children born in 2025 and it's an even bet that one of them is another Calyx. In a class of 30 the chance is Under 1%.
When Calyxs were born
Half of everyone ever recorded as Calyx was born before 2020 — so the typical Calyx is around 5 today.
- Biggest decade
- 2020s
- 53.8% of all use
- Born in the last 25 years
- 100.0%
- A modern name
- Recorded since 1950
- 182
- People you could plausibly meet
2020s — 53.8% of all recorded uses (98).
Is Calyx rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- −817
- Places dropped
- Rank vs 5 years ago
- +178
- Places climbed
- Rank vs 10 years ago
- +4,372
- Places climbed
- Births vs 10 years ago
- 2.17×
- More babies than then
- Share of its own peak
- 65.0%
- Peak was 2022 (20)
- Years since peak
- 3
- Years
- Year-to-year steadiness
- Volatile
- 27.9% average annual change
Spellings of Calyx
Calyx is not the most common spelling — Caleb is, with 48.5% against Calyx's 0.03%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Calyx around the world
Where Calyx ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.
- Canada2015–2023#2,436in 2023
- South Australia2010–2010#754in 2010
Popularity data from Statistics Canada and Consumer and Business Services (South Australia). StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.
Calyx by the numbers
The raw record for each sex the name is used for.
As a boy's name
Names similar to Calyx
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Calyx
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.