Cay
Girls' nameMeaning not yet documented
Cay has been given to 252 babies in the U.S. since 1939. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1955, with 38 recorded.
Babies named Cay, 1966
1 in 695,000
Cay 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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Cay?
Cay had fewer than 5 recorded uses in 2025, so these figures use 1966, the last year it was published.
- Among all babies, 1966
- 1 in 695,000
- 5 of 3,475,564 births
- Among girls only
- 1 in 338,000
- <0.01% of girls
- Rank, 1966
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 481,817 kids
- Even odds of a second one
Where Cay sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 1966 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 481,817 children born in 1966 and it's an even bet that one of them is another Cay. In a class of 30 the chance is Under 1%.
When Cays were born
Half of everyone ever recorded as Cay was born before 1955 — so the typical Cay is around 70 today.
- Biggest decade
- 1950s
- 59.3% of all use
- Born in the last 25 years
- 97.1%
- A modern name
- Recorded since 1950
- 200
- People you could plausibly meet
1950s — 59.3% of all recorded uses (143).
Is Cay 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
- —
- Not ranked then
- Rank vs 5 years ago
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 0%
- Peak was 1955 (38)
- Years since peak
- 70
- Years
- Year-to-year steadiness
- Volatile
- 49.3% average annual change
Cay by the numbers
The raw record for each sex the name is used for.
As a girl's name
Names similar to Cay
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Cay
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.