Marillyn
Girls' nameMeaning not yet documented
Marillyn has been given to 437 babies in the U.S. since 1920. 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 1927, with 40 recorded.
Babies named Marillyn, 1947
1 in 400,000
Marillyn 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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.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 Marillyn?
Marillyn had fewer than 5 recorded uses in 2025, so these figures use 1947, the last year it was published.
- Among all babies, 1947
- 1 in 400,000
- 9 of 3,602,100 births
- Among girls only
- 1 in 197,000
- <0.01% of girls
- Rank, 1947
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 277,422 kids
- Even odds of a second one
Where Marillyn sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 1947 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 277,422 children born in 1947 and it's an even bet that one of them is another Marillyn. In a class of 30 the chance is Under 1%.
When Marillyns were born
Half of everyone ever recorded as Marillyn was born before 1929 — so the typical Marillyn is around 96 today.
- Biggest decade
- 1920s
- 52.9% of all use
- Born in the last 25 years
- 93.6%
- A modern name
- Recorded since 1950
- 0
- People you could plausibly meet
1920s — 52.9% of all recorded uses (231).
Is Marillyn 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 1927 (40)
- Years since peak
- 98
- Years
- Year-to-year steadiness
- Shifting
- 24.0% average annual change
Spellings of Marillyn
Marillyn is not the most common spelling — Marilyn is, with 85.7% against Marillyn's 0.10%.
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.
Where Marillyn is used
Across 1910–2025, Marillyn was most concentrated in California — about 1 in — girls, against 1 in 798,521 across all states with data. It was least common in Wisconsin (1 in —).
Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Marillyn has too little recent state data to map, so this covers all years from 1910.
Marillyn around the world
Where Marillyn 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.
- South Australia1945–1946#269in 1946
Popularity data from Consumer and Business Services (South Australia). CBS SA data under CC BY 4.0.
Marillyn by the numbers
The raw record for each sex the name is used for.
Names similar to Marillyn
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Marillyn
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.