Thelmer
UnisexBoys' nameGirls' nameMeaning not yet documented
Thelmer has been given to 189 babies in the U.S. since 1910. 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 1915, with 13 recorded. It's used for both sexes: 75% boys, 25% girls all-time.
Babies named Thelmer, 1938
1 in 443,000
Thelmer 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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
Girls or boys — Thelmer over time
In 1938, Thelmer went to 0% girls and 100% boys.
A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.
How common is Thelmer?
Thelmer had fewer than 5 recorded uses in 2025, so these figures use 1938, the last year it was published.
- Among all babies, 1938
- 1 in 443,000
- 5 of 2,212,569 births
- Among boys only
- 1 in 222,000
- <0.01% of boys
- Rank, 1938
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 306,728 kids
- Even odds of a second one
Where Thelmer sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 1938 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 306,728 children born in 1938 and it's an even bet that one of them is another Thelmer. In a class of 30 the chance is Under 1%.
When Thelmers were born
Half of everyone ever recorded as Thelmer was born before 1920 — so the typical Thelmer is around 105 today.
- Biggest decade
- 1910s
- 47.9% of all use
- Born in the last 25 years
- 91.5%
- A modern name
- Recorded since 1950
- 0
- People you could plausibly meet
1910s — 47.9% of all recorded uses (68).
Is Thelmer 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 1915 (13)
- Years since peak
- 110
- Years
- Year-to-year steadiness
- Volatile
- 28.1% average annual change
Spellings of Thelmer
Thelmer is not the most common spelling — Elmer is, with 91.0% against Thelmer'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.
Thelmer by the numbers
The raw record for each sex the name is used for.
As a boy's name
Names similar to Thelmer
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Thelmer
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.