Unisex name · since 1904
Fidelis
114 babies named Fidelis in U.S. Social Security records since 1904, with the highest year being 1926. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #25,691 of 72,339
- all-time among girls
- 114
- born since 1904
- 1920s
- peak decade
114 girls have been named Fidelis since 1904, though it isn't currently a top-ranked name.
Social Security Administration records show Fidelis recorded 114 times among girls since 1904, though it doesn't currently rank among the most-used girls names, peaking in the 1920s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1904 to 1941.
- #25,691 of 72,339 all-time among girls
- 114 born since 1904
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Fidelis ranks #25,691 of 72,339 girls' names by all-time recorded births (highest first). 114 born since 1904, peaking in the 1920s.
- #25,691 of 72,339
- all-time among girls
- 114
- born since 1904
- 1920s
- peak decade
Fidelis's 114 recorded births place it above 64.39% of the 72,339 girls names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Fidelis's usage pattern, beyond the headline number
Splitting Fidelis's full recorded timeline at 1921, 57% of its total births fall in the more recent half of the record versus 43% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1911, with just 5 recorded births -- worth weighing against the 1926 peak of 11 to see the full range of the name's swing in popularity.
Fidelis popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1904–1941
- Peak year (1926)
- 11
- Annual births at peak, across 38 years of records
Fidelis popularity over time - boys
49 total births recorded since 1903 (Fidelis as boys' name)
Fidelis by decade
1920s is the heaviest window (52 births, 46% of the file).
1920s was Fidelis's strongest decade.
52 babies received the name during that ten-year window, about 46% of all-time use.
Fidelis births by decade
Total births in each ten-year window
- 1900s 13
1900s
13 births
- 1910s
1910s
31 births
- 1920s
1920s
52 births
- 1930s 13
1930s
13 births
- 1940s 5
1940s
5 births
What this shows Peak: 1920s at 52 births (46% of all-time use).
Frequently Asked Questions
How popular is the name Fidelis? ▼
Where does Fidelis sit in the SSA name archive? ▼
When was Fidelis most popular? ▼
Is Fidelis a unisex name? ▼
How long has the name Fidelis been used? ▼
What names are similar to Fidelis? ▼
What to do with Fidelis's data
- Fidelis's decade-level peak was the 1920s (52 total births); usage has since declined to 5 in the 1940s -- 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 Fidelis
Nearby Names Like Fidelis
Names with a similar sound, spelling, or feel to Fidelis
Compare Fidelis side by side: Fidelis vs Fidelia Fidelis vs Fidela Fidelis vs Fidencia
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Fidelis: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1926)
Similar record span (~37 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, 1904–1941 (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 Fidelis 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.