Cassi
Feminine
A bare i at the end of a name is a date stamp. American naming used it heavily for about thirty years to mark a short form as a daughter's — Cassi, Toni, Randi, Jodi, Terri — and then stopped almost entirely, which means the letter now places a woman's birth within a generation. Cassi serves Cassandra, Cassidy and Cassondra equally.
How old is the name Cassi?
Cassi first appears in US birth records in 1959 — 66 years ago. The typical Cassi alive today was born around 1987, making them about 38 years old. About 2,300 people named Cassi are estimated to be alive in the US today.
When was the name Cassi most popular?
Cassi peaked in 1984, reaching #1112 nationally. Today it ranks #14942, 13,830 places below that high. See the whole 1984 chart.
Lists built from the same records:
Where it comes from
From Cassandra to Cassi
The story of Cassi
The convention was simple and everyone understood it: take a unisex short form, write it with an i instead of a y or an ie, and it reads as a woman's name. Terri, Jodi, Randi, Bobbi and Cassi all follow it, and all of them peaked between about 1960 and 1990. It was an efficient system and it is now completely legible as a period marker. Cassi appears in the record from 1959 and peaked in 1984.
Meaningscholars disagree
Not established
Which meaning applies depends on the longer name. Cassandra is Greek and her name's elements are usually read as one who shines and men, though the derivation is not secure and the name may be pre-Greek. Cassidy is Irish and means descendant of the curly-haired one. A Cassi may be standing on either, or on neither, since the short form has been given outright for decades.
How the name formed
- Cassandra
- Cassie
- Cassi
Related forms: Kassandra
Pronouncing Cassi
KASS-ee
Two syllables, stress on the first. Cassi, Cassie, Cassy and Kassi are all said identically, which was the whole point of the convention — the spelling carried information the sound did not.
Nicknames for Cassi
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1959
- Most girls named
- 1982126 — the highest on record
- Peak rank
- #1112reached in 1984
- Change vs 2023
- −44.4%5 in 2025, from 9
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Cassi in other languages
The same name elsewhere
- Kassandra in Greek — related form
Cassis among us
people named Cassi are estimated to be alive in the US today
About 1 girl in 321,453 born in 2025 was named Cassi
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Cassi
- #14942
- Cassi on the 2025 chart
- #946
- counting every spelling
The SSA counts spellings, not names. Cassi went to 5 girls in 2025, but Kassi is the same name said out loud. Together the 2 spellings went to 14, which makes it the 946th most-given girls’ name of the year — 13,996 places above the chart.
- Kassi9
- Cassi5
About 1 girl in 114,805 born in 2025 was given one of these spellings — against 1 in 321,453 for Cassi itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
The Alane test
Every popular name lives one long story — a climb, a peak, a slow settling back. Cassi's later chapters haven't been written yet, so we borrowed them: Alane climbed just as high around 1964, and its whole arc is on record. Line the two peaks up, and Alane's path sketches the road Cassi is walking now.
Cassi sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Cassi beside its neighbors
The names ranked closest to Cassi in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- Cass works as a short form and suits a child of either sex.
- Several substantial full names sit behind it as formal options.
- Five letters, two syllables, and readable on sight.
- Cassie is the commoner spelling and will be written instead.
- The bare i dates the name to within about thirty years for anyone who was there.
- As a given name it reads as a nickname, and the question about the longer form arrives regularly.
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What they receive
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Cassi
Feminine · #14942 in the U.S.
Frequently asked
- How many Cassis are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 2,300 people named Cassi are estimated to be alive in the US today.
- How do you spell Cassi?
- Cassi is one of 2 recorded spellings. Kassi is the more common one — 9 births in 2025 against 5 for Cassi.
- How popular is the name Cassi in 2025?
- Cassi ranks #14942 among US girl names in 2025, with 5 babies given the name.
- How rare is the name Cassi?
- About 1 in every 321,453 US girls born in 2025 was named Cassi — 5 in all.
- Will my child share the name Cassi with classmates?
- Cassi will almost certainly be the only one in school.
Ranked beside Cassi
Names sitting at a similar level of popularity right now.
Hester#14942 · Lyda#14942 · Zula#14942 · Zona#14942 · Ula#14942 · Belva#14942 · Lucetta#14942 · Leala#14942
Looking for what else is popular rather than what resembles Cassi? See the current top 100.
Choosing between Cassi and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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