Boys' name · since 1927

Rudolphus

Since 1927, U.S. Social Security records show 20 babies named Rudolphus, peaking in 1927. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.

#29,195 of 45,481
all-time among boys
20
born since 1927
1940s
peak decade

Rudolphus sits outside today's top ranks for boys, with 20 recorded since 1927.

According to the U.S. Social Security Administration, Rudolphus has been recorded 20 times among boys since 1927, though it is not among the currently most-used boys names, with its heaviest use in the 1940s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1927 to 1949.

  • #29,195 of 45,481 all-time among boys
  • 20 born since 1927
  • 1940s peak decade

Data updated Aug 2026

The verdict

According to the U.S. Social Security Administration, Rudolphus ranks #29,195 of 45,481 boys' names by all-time recorded births (highest first). 20 born since 1927, peaking in the 1940s.

#29,195 of 45,481
all-time among boys
20
born since 1927
1940s
peak decade
Below the archive median
All-time archive position

Rudolphus's 20 recorded births place it above 35.65% of the 45,481 boys names in the full SSA archive.

National only
State-record footprint

No state rows cleared SSA’s public reporting threshold for this name.

Rudolphus's usage pattern, beyond the headline number

Rudolphus splits its recorded history at 1948: 50% of all births land in the more recent half, 50% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1927 (5 births).

Rudolphus popularity over time

Annual U.S. births registered with the Social Security Administration · 1927–1949

Last recorded 1949
Peak year (1927)
5
Annual births at peak, across 23 years of records
5 1927193719481949 5

Rudolphus by decade

1940s is the heaviest window (10 births, 50% of the file).

1940s was Rudolphus's strongest decade.

10 babies received the name during that ten-year window, about 50% of all-time use.

Rudolphus births by decade

Total births in each ten-year window

births

What this shows Peak: 1940s at 10 births (50% of all-time use).

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

Frequently Asked Questions

How popular is the name Rudolphus? ▼
Rudolphus has been given to 20 babies in the U.S. since 1927, according to SSA data. Its archive ordinal is #29,195 of 45,481 among boys' names (total births, highest first). Its last appearance in the data was 1949. 5 babies were born in 1927, its single highest year.
Where does Rudolphus sit in the SSA name archive? ▼
According to the U.S. Social Security Administration, Rudolphus ranks #29,195 of 45,481 boys' names by all-time recorded births (highest first). All-time ordinal matches browse popularity (total births DESC); the current ordinal uses the null SSA file. See /methodology#corpus-placement.
When was Rudolphus most popular? ▼
Rudolphus was most popular in the 1940s decade with 10 total births. The single peak year was 1927.
How long has the name Rudolphus been used? ▼
Rudolphus has been recorded in Social Security data since 1927, spanning 23 years of data through 1949.
What names are similar to Rudolphus? ▼
Names with a similar sound or spelling include Rudolph, Rudy, Rudolf, Rudolfo, and 4 more. These share a common prefix and are also used for boys.

Keep exploring Rudolphus

Nearby Names Like Rudolphus

Names with a similar sound, spelling, or feel to Rudolphus

Rudolph Boy
#4140 53,441 births
Rudy Boy
#739 50,228 births
Rudolf Boy
2,951 births
Rudolfo Boy
2,263 births
Rudra Boy
#1289 1,763 births

Compare Rudolphus side by side: Rudolphus vs Rudolph Rudolphus vs Rudy Rudolphus vs Rudolf

Or pick any two names to compare →

Related Names

Names with a similar number of total births

Bose
20 births · Peak 1914
Coke
20 births · Peak 1913
Glee
20 births · Peak 1913
Philias
20 births · Peak 1913
Rassie
20 births · Peak 1913
Anello #7727
20 births · Peak 2025
Converse
20 births · Peak 1914
Holloway
20 births · Peak 1914

Nationwide names with similar peak year or record span

Two nationwide peer axes for Rudolphus: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.

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, 1927–1949 (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 Rudolphus 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.