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.

114
total births
1904–1941
years on record
1920s
peak decade
46%
born in that 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.

  • 114 total births
  • 1904–1941 years on record
  • 1920s peak decade
  • 46% born in that decade

Data updated Jun 2026

The verdict

114 girls have been named Fidelis since 1904, peaking in the 1920s, last recorded in 1941.

114
total births
1904–1941
years on record
1920s
peak decade
46%
born in that decade
1920s
Peak decade

46% of everyone ever named Fidelis was born in this single decade.

1926
Single peak year

11 babies were named Fidelis in 1926 - its busiest year on record.

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 at a glance

Last recorded 1941

Total births

114

Since 1904

38 years of records

Peak year

1926

11 births that year

Strongest decade: 1920s

Current rank

Unranked

Outside the modern top-1,000

As of 1941

Active since

1904

Recorded for 38 years

Last year on file: 1941

Fidelis popularity over time - girls

Annual U.S. births registered with the Social Security Administration · 1904–1941

Last recorded 1941
Peak year (1926)
11
Annual births at peak, across 38 years of records
4681012 1904191419191922192719341941 5

Fidelis popularity over time - boys

49 total births recorded since 1903 (Fidelis as boys' name)

Unisex variant - 49 births
456789 190319141916191719191962200120042011 5

Fidelis by decade

Total births in each ten-year window, peak vs trough at a glance

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

births

What this shows Peak: 1920s at 52 births (46% of all-time use).

Source U.S. Social Security Administration · Baby Names As of June 2026

Frequently Asked Questions

How popular is the name Fidelis? ▼
114 babies have been named Fidelis since 1904. It was last recorded in 1941. The peak year was 1926 with 11 births.
When was Fidelis most popular? ▼
Fidelis was most popular in the 1920s decade with 52 total births. The single peak year was 1926.
Is Fidelis a unisex name? ▼
Yes, Fidelis is used for both boys and girls. As a girl's name it has 114 births, and as a boy's name it has 49 births.
How long has the name Fidelis been used? ▼
Records for Fidelis go back to 1904, giving 38 years of history through 1941.
What names are similar to Fidelis? ▼
Names with a similar sound or spelling include Fidelia, Fidela, Fidencia, Fidelina, and 1 more. These share a common prefix and are also used for girls.

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.
  • Weighing it against an alternative? Put two names side by side. Compare names

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

Fidelia Girl
#12172 732 births
Fidela Girl
410 births
Fidencia Girl
60 births
Fidelina Girl
11 births
Fidella Girl
5 births

Compare Fidelis side by side: Fidelis vs Fidelia Fidelis vs Fidela Fidelis vs Fidencia

Or pick any two names to compare →

Related Names

Names with a similar number of total births

Dave
114 births · Peak 1918
Beatric
114 births · Peak 1920
Irlene
114 births · Peak 1922
Therma
114 births · Peak 1917
Vincenta
114 births · Peak 1921
Rosemae
114 births · Peak 1925
Truda
114 births · Peak 1949
Nataline
114 births · Peak 1924

Data Sources

Data as of June 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).

Cite this page

NameAlmanac Editorial. "Fidelis: Baby Name Since 1904 - 114 Births, Peak 1926." NameAlmanac. Accessed via https://namealmanac.com/name/fidelis. Licensed CC BY-SA 4.0.

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 June 2026.