Head to head · Boys' names
Caspian vs Collin
#491 vs #493 in 2025
Caspian is a whisker ahead (#491 vs #493 in 2025), but the curves point different ways: Caspian is climbing the charts fast, Collin is holding its place on the charts.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
The tale of the tape
The tape is even: Caspian and Collin each lead 3 measures of 6.
Ranks, counts and years are measured in the official US birth record; the classroom and living figures are estimates computed from it. The dot marks the side each measure favours on the charts — more common, not better.
What the records say
146 years of US births, drawn on one scale
Two curves, one scale
Who owned which decade
- 1890s: Caspian —, Collin #1079 — Collin higher
- 1900s: Caspian —, Collin #1068 — Collin higher
- 1910s: Caspian —, Collin #1837 — Collin higher
- 1920s: Caspian —, Collin #1891 — Collin higher
- 1930s: Caspian —, Collin #1905 — Collin higher
- 1940s: Caspian —, Collin #1143 — Collin higher
- 1950s: Caspian —, Collin #1081 — Collin higher
- 1960s: Caspian —, Collin #850 — Collin higher
- 1970s: Caspian —, Collin #587 — Collin higher
- 1980s: Caspian —, Collin #340 — Collin higher
- 1990s: Caspian #6178, Collin #157 — Collin higher
- 2000s: Caspian #4958, Collin #146 — Collin higher
- 2010s: Caspian #1704, Collin #260 — Collin higher
- 2020s: Caspian #653, Collin #472 — Collin higher
Collin stood higher in every recorded decade — 14 of 14.
Rank by decade
| Decade | Caspian | Collin |
|---|---|---|
| 1890s | — | #1079 |
| 1900s | — | #1068 |
| 1910s | — | #1837 |
| 1920s | — | #1891 |
| 1930s | — | #1905 |
| 1940s | — | #1143 |
| 1950s | — | #1081 |
| 1960s | — | #850 |
| 1970s | — | #587 |
| 1980s | — | #340 |
| 1990s | #6178 | #157 |
| 2000s | #4958 | #146 |
| 2010s | #1704 | #260 |
| 2020s | #653 | #472 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Caspian
of the Caspian Sea; from the ancient Caspii people
The route is clear — the sea took its name from the Caspii, a people of the Transcaucasus region, and the name came to English through the sea. What the tribal name itself meant in its own language was never recorded, so the trail stops there.
Caspii → Kaspion → Mare Caspium → Caspian
How it traveled
The Caspii were a people known to Greek and Roman geographers, and the great landlocked sea beside them took their name: Kaspion to the Greeks, Mare Caspium in Latin. For centuries afterward Caspian was purely geography — a place on a map, not a person.
Collin
a young hound, or little Nicholas
Two unrelated lines meet here. The Gaelic Cailean means a whelp or young dog, which was a compliment in a hunting culture rather than an insult. The English Colin is Col, an old short form of Nicholas, with the French diminutive ending -in. Both were in use in Britain by the Middle Ages, and the spelling with two l's usually points to the Gaelic surname.
Cailean → Colin → Collin
How it traveled
Cailean Mòr Caimbeul died in the thirteenth century and gave the Campbell chiefs their Gaelic title, which is why the name is bound so tightly to that clan. Separately, English shepherds in Elizabethan poetry are constantly called Colin, from the French diminutive — the two Colins were already being confused four hundred years ago.
Where a reading is contested the note says so — this page does not turn a guess into a fact. The chain is each name's recorded forms, oldest first; the story is its opening, told in full on the name's own page.
Out loud, and in short
Caspian
KASS-pee-un
Stress on the first syllable, exactly as in the name of the sea. Some families say KASS-pyun, running the last two syllables together. Rarely misread, though it is sometimes heard as Casper on a first introduction.
- Cas — The most common short form in everyday use; also spelled Cass, which stands alone as a given name of its own.
- Cass — Informal; used for Cassius and Cassian too, so it may need clarifying among friends.
- Casp — Informal, mostly a playground or teammate shortening.
- Caz — Informal, more common in British and Australian usage than American.
Collin
KAH-lin
Two syllables, stress on the first. Britain says it that way too, though British Colins with one l often take a longer first vowel — KOH-lin — which is a real transatlantic difference and a source of small confusion.
- Col — The name without its ending, which is the medieval short form of Nicholas; plain and rarely written.
- Cal — A near-substitution rather than a shortening; a standing American name of its own and easier in speech.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Caspian if you want…
- a name on the way upup 269 places on the charts in five years
- a name with more sound in itCaspian runs 3 syllables, Collin 2
- plenty of nickname options4 recorded short forms — Cas, Cass and Casp
Choose Collin if you want…
- a name holding steadyCollin is holding its place on the charts
- a name with fewer syllablesCollin is 2 syllables to Caspian's 3
Each line is a measured difference between the two names — a rank, a count, a recorded form — never a judgement of either. Save the one that answers your question; it lands on your shortlist.
The trade-offs, name by name
Caspian
Strengths
- The spelling is already familiar to anyone who has seen a world map or read Narnia, so it is usually written correctly the first time.
- It sits beside well-established Cas- names — Casper, Cassius, Cassian — which makes it easy for strangers to hear and repeat.
- Short forms come ready-made: Cas, Cass, Casp, all in real use and none invented for the purpose.
To consider
- It will be mistaken for Casper often enough to notice. The two names are unrelated in origin, but they share four letters and a rhythm, and people fill in what they expect to hear.
- The Narnia link is real and permanent. Many people will place the name in those books immediately, which is charming to some readers and a little bookish for others.
- It is climbing steadily, so a child born now may meet more Caspians as a teenager than as a toddler — still uncommon, but less singular than it is today.
Collin
Strengths
- Both possible origins are respectable and old, so there is something real to tell either way.
- It is entirely familiar to every English speaker and needs no explanation.
- Six letters, two syllables, and no difficulty of spelling or saying.
To consider
- Colin with one l is the older and internationally commoner spelling, and mail will use both.
- British and American speakers give the first vowel different lengths, which travelers notice.
- It was very well used in the 1990s, so a man of that age will have met several.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
With your last name
Say both in full. The notes are facts about letters and sound — a rhyme, a shared initial, the monogram — not a verdict on either name.
Type a last name to hear Caspian and Collin in full.
Weighing the whole shortlist? Run the full comparison — up to eight names with your last name, initials, classroom projections and a printable report.
Decide together
Nobody names a baby alone
Still torn between Caspian and Collin?
Put both to the vote.
One link to your partner, your parents, your sister. Each of them gets the two names, a one-tap answer and room to say why — and every reply lands in one place.
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More than two in the running? Settle it with a bracket or run the full comparison with your last name.
More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists these names appear on
Where Caspian and Collin each sit in the library — alternatives in the same style, ranked by the same records.
Caspian or Collin — the short answers
- Which is more popular, Caspian or Collin?
- Caspian, in 2025: Caspian ranked #491 with 614 babies; Collin ranked #493 with 613 babies.
- Which name is rising faster, Caspian or Collin?
- Caspian. Over the last five years Caspian moved up 269 places; Collin moved down 28 places.
- Which is the older name, Caspian or Collin?
- Caspian entered the US charts in 1998; Collin entered the US charts in 1895. On the American record, Collin is the older name.
- How many people are named Caspian and Collin?
- About 4,100 people named Caspian are estimated to be alive in the US today. About 79,000 people named Collin are estimated to be alive in the US today.
- Will there be other Caspians or Collins in the classroom?
- Caspian will almost certainly be the only one in school. Collin will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025. Votes are battle voters on this site, not the birth record. Data & methodology
Keep playing
Sixty more head-to-heads are dealt in the arena every day — or line up Caspian, Collin and the rest of your shortlist with your last name in one printable report.
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