Unisex name · since 1910
Thelmer
Thelmer has 142 recorded births since 1910 in federal Social Security data, most heavily in 1915 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #15,146 of 45,481
- all-time among boys
- 142
- born since 1910
- 1910s
- peak decade
Thelmer is not among the current top-ranked boys names; 142 have been recorded since 1910.
Thelmer has 142 recorded births among boys since 1910, per the U.S. Social Security Administration, though it falls outside today's most-used boys names, busiest in the 1910s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1910 to 1938.
- #15,146 of 45,481 all-time among boys
- 142 born since 1910
- 1910s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Thelmer ranks #15,146 of 45,481 boys' names by all-time recorded births (highest first). 142 born since 1910, peaking in the 1910s.
- #15,146 of 45,481
- all-time among boys
- 142
- born since 1910
- 1910s
- peak decade
Thelmer's 142 recorded births place it above 66.68% of the 45,481 boys names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Thelmer's usage pattern, beyond the headline number
Thelmer splits its recorded history at 1921: 46% of all births land in the more recent half, 54% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1910 (5 births) -- compare that against the 1915 peak of 13 for a sense of just how much the name's popularity has swung.
Thelmer popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1910–1938
- Peak year (1915)
- 13
- Annual births at peak, across 29 years of records
Thelmer popularity over time - girls
47 total births recorded since 1913 (Thelmer as girls' name)
Thelmer by decade
1910s is the heaviest window (68 births, 48% of the file).
1910s was Thelmer's strongest decade.
68 babies received the name during that ten-year window, about 48% of all-time use.
Thelmer births by decade
Total births in each ten-year window
- 1910s
1910s
68 births
- 1920s
1920s
59 births
- 1930s 15
1930s
15 births
What this shows Peak: 1910s at 68 births (48% of all-time use).
Frequently Asked Questions
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What to do with Thelmer's data
- Thelmer's decade-level peak was the 1910s (68 total births); usage has since declined to 15 in the 1930s -- if you're weighing a "classic revival" angle, the trend line argues against it.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Thelmer
Nearby Names Like Thelmer
Names with a similar sound, spelling, or feel to Thelmer
Compare Thelmer side by side: Thelmer vs Theodore Thelmer vs Theo Thelmer vs Theron
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Thelmer: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1915)
Similar record span (~28 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1910–1938 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Thelmer draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.