Recorded 1912–1985 Boys' name Peak 1921 178 births

Theodus — boys' name

178 babies named Theodus in U.S. Social Security records since 1912, with the highest year being 1921. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1910s181920s361930s231940s161950s381960s301970s121980s5
1950s
Peak decade

21% of everyone ever named Theodus was born in this single decade.

1921
Single peak year

8 babies were named Theodus in 1921 — its busiest year on record.

What the Data Says About Theodus

The Social Security Administration has registered 178 babies named Theodus between 1912 and 1985, spanning 74 consecutive years of U.S. birth records. As a boy's name, Theodus currently falls outside the top 1,000 boys' names for 1985. The name reached its historical peak in 1921, when 8 babies received it in a single year.

Decade-level aggregation shows that Theodus performed strongest in the 1950s, accumulating 38 births during that ten-year window. Across the 8 decades of recorded activity, Theodus shows a clear decline from its mid-century high.

No etymological entry is currently available for Theodus in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 178 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.

Theodus at a glance

Last recorded 1985

Total births

178

Since 1912

74 years of records

Peak year

1921

8 births that year

Strongest decade: 1950s

Current rank

Unranked

Outside the modern top-1,000

As of 1985

Active since

1912

Recorded for 74 years

Last year on file: 1985

Theodus popularity over time

Annual U.S. births registered with the Social Security Administration · 1985–1912

Last recorded 1985
Peak year (1921)
8
Annual births at peak — across 74 years of records
456789 198519661958195219401931192219171912 6

Theodus by decade

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

Peak: 1950s
Peak decade
1950s
38 births that decade — 21% of Theodus's all-time total
1910s181920s361930s231940s161950s381960s301970s121980s5

Frequently Asked Questions

How popular is the name Theodus?
178 babies have been named Theodus since 1912. It was last recorded in 1985. The peak year was 1921 with 8 births.
When was Theodus most popular?
Theodus was most popular in the 1950s decade with 38 total births. The single peak year was 1921.
How long has the name Theodus been used?
Theodus has been recorded in Social Security data since 1912, spanning 74 years of data through 1985.
What names are similar to Theodus?
Names with a similar sound or spelling include Theodore, Theo, Theron, Theadore, and 4 more. These share a common prefix and are also used for boys.

Data Sources

Data as of 2024. Source: U.S. Social Security Administration (SSA).

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1912–1985 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.

State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.