Head to head · Boys' names
Cairo vs Colin
#341 vs #343 in 2025
Cairo is a whisker ahead (#341 vs #343 in 2025), but the curves point different ways: Cairo is holding its place on the charts, Colin is stepping back from its peak.
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: Cairo and Colin 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
- 1880s: Cairo —, Colin #850 — Colin higher
- 1890s: Cairo —, Colin #971 — Colin higher
- 1900s: Cairo —, Colin #1210 — Colin higher
- 1910s: Cairo —, Colin #1205 — Colin higher
- 1920s: Cairo —, Colin #1106 — Colin higher
- 1930s: Cairo —, Colin #925 — Colin higher
- 1940s: Cairo —, Colin #506 — Colin higher
- 1950s: Cairo —, Colin #470 — Colin higher
- 1960s: Cairo —, Colin #388 — Colin higher
- 1970s: Cairo #5355, Colin #273 — Colin higher
- 1980s: Cairo #6302, Colin #160 — Colin higher
- 1990s: Cairo #5913, Colin #126 — Colin higher
- 2000s: Cairo #3191, Colin #108 — Colin higher
- 2010s: Cairo #1133, Colin #173 — Colin higher
- 2020s: Cairo #334, Colin #310 — Colin higher
Colin stood higher in every recorded decade — 15 of 15.
Rank by decade
| Decade | Cairo | Colin |
|---|---|---|
| 1880s | — | #850 |
| 1890s | — | #971 |
| 1900s | — | #1210 |
| 1910s | — | #1205 |
| 1920s | — | #1106 |
| 1930s | — | #925 |
| 1940s | — | #506 |
| 1950s | — | #470 |
| 1960s | — | #388 |
| 1970s | #5355 | #273 |
| 1980s | #6302 | #160 |
| 1990s | #5913 | #126 |
| 2000s | #3191 | #108 |
| 2010s | #1133 | #173 |
| 2020s | #334 | #310 |
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
Cairo
the victorious, the vanquisher
From Arabic al-Qāhira, the feminine form of al-Qāhir, 'the conqueror' — a name applied to the planet Mars in medieval Arabic astronomy and given to the new Fatimid capital at its founding.
al-Qāhir → al-Qāhira → Cairo (Italian) → Cairo
How it traveled
The city was established in the tenth century by the Fatimid dynasty as a royal capital beside older settlements on the Nile, and named al-Qāhira. European merchants and travelers carried the word home, and it reached English through Italian as Cairo — which is why the English form looks nothing like the Arabic.
Colin
Either "victory of the people" (through Nicholas) or "whelp, young pup" (through Gaelic cailean)
Two separate names meet at this spelling. In England and France, Colin began as a diminutive of Nicholas — Colle plus the affectionate ending -in — so it inherits the Greek sense of Nikolaos, "victory of the people." In Scotland it is the anglicized form of Cailean, connected to Gaelic cailean, "whelp" or "young dog," an affectionate rather than insulting term in Gaelic naming. Both readings are serious and well documented; which one applies depends on which family line the name traveled down.
Nikolaos → Nicholas → Colle → Colin
How it traveled
The English Colin grew out of Nicholas: medieval speakers clipped it to Colle and added the diminutive -in, and the same thing happened in French, where Colin became a common everyday name in the Middle Ages. Quite separately, Scottish Gaelic Cailean was long established in the Highlands, and English writers rendered it as Colin — which is why the name has been strongly Scottish for centuries while also being, technically, a nickname for Nicholas.
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
Cairo
KYE-roh
American English says the Egyptian capital KYE-roh, and that is the standard reading of the name. The Illinois and Georgia towns of the same spelling are pronounced KAY-roh, so an occasional correction is part of the deal.
- Cai — The most natural clipping; informal, and overlaps in sound with the independent given name Kai.
- Ro — Family-level nickname drawn from the second syllable; rarely used outside the household.
Colin
KOL-in
In American use the first syllable usually rhymes with "doll" — KAH-lin. British and Irish speakers most often say KOL-in as well, though KOH-lin, with a long o, is also widely heard and was the pronunciation used by some well-known bearers. Both are correct; it is worth deciding which one your family will use, since strangers will guess.
- Col — The oldest short form, and the one the name was originally built from; informal, family use.
- Cole — Informal, and also a well-established given name in its own right in the US.
- Colie — Affectionate, mostly used by family and with young children.
- C.J. — Initial-based, used when the middle name allows it; common in American school and sports settings.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Cairo if you want…
- a name on the way upup 7 places on the charts in five years
- a newer arrivalCairo entered the US charts in 1979
- a name that ages quietlyan estimated 40% chance of feeling dated by 2040, against 68% for Colin
Choose Colin if you want…
- a name past its most crowded yearsColin is stepping back from its peak
- plenty of nickname options4 recorded short forms — Col, Cole and Colie
- a long American recordColin was already in use when US records began in 1880
- a name that feels very nowColin is stepping back from its peak
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
Cairo
Strengths
- The spelling needs no explanation — it is a world capital, so people who have never met the name still know how to write it.
- A documented meaning that goes back to the city's tenth-century founding: 'the victorious'.
- Two syllables, ending on an open vowel, which sits easily beside most one-syllable surnames.
To consider
- It is still first and foremost a city, so expect the occasional question about whether there is a family connection to Egypt, and the occasional assumption that there is.
- Two live pronunciations exist in American English — KYE-roh for the capital, KAY-roh for the towns in Illinois and Georgia. Most people default to the first, but not all.
- The wave of children with this name is very new, so a boy named Cairo will meet few older namesakes and, in most schools, no classmate sharing it.
Colin
Strengths
- Two syllables, one clear stress, and no letter anyone has to be told about — most people can spell it after hearing it once.
- Works unchanged in English and French, with close relatives in Gaelic and Irish, so it travels well.
- Established short forms in real use: Col and Cole, both centuries or decades old rather than invented.
To consider
- Colin and Collin both exist as accepted spellings, so expect to correct the double-l version regularly for life. Neither is wrong, which is exactly what makes the mix-up persistent.
- The pronunciation genuinely splits — KAH-lin and KOH-lin are both in use — so your child will hear their name said two ways and will need a habit of answering to both.
- If the Gaelic line matters to you, know that cailean means "whelp" or "young pup": warm in Gaelic naming tradition, but not the meaning most parents expect to find.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
How each is likely to age
Cairo
40%chance Cairo feels dated by 2040
Cairo 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.
Colin
68%chance Colin feels dated by 2040
Colin is coming down from a big peak (#85 in 2004). This is the stretch of the cycle where a name starts to sound like the decade it ruled.
A reading of where each name sits on the long naming cycle — computed, not measured, and explained on the data page.
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 Cairo and Colin 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
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More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists that carry both names
Every list here names both Cairo and Colin — the same style, ranked by the same records.
Cairo or Colin — the short answers
- Which is more popular, Cairo or Colin?
- Cairo, in 2025: Cairo ranked #341 with 965 babies; Colin ranked #343 with 950 babies.
- Which name is rising faster, Cairo or Colin?
- Cairo. Over the last five years Cairo moved up 7 places; Colin moved down 56 places.
- Which is the older name, Cairo or Colin?
- Cairo entered the US charts in 1979; Colin was already in use when US records began in 1880. On the American record, Colin is the older name.
- How many people are named Cairo and Colin?
- About 9,400 people named Cairo are estimated to be alive in the US today. About 127,000 people named Colin are estimated to be alive in the US today.
- Will there be other Cairos or Colins in the classroom?
- Cairo will almost certainly be the only one in school. Colin 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
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