Thelbert

Boys' name

Literal meaning not recorded

Thelbert has been given to 931 babies in the U.S. since 1908. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1921, with 32 recorded.

Babies named Thelbert, 1985

1 in 714,000

Thelbert over time, 1880–2025

Boys
01020304018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Thelbert: meaning, origin, and history

Literal meaning not recorded

Deeper origin not confirmed in the cited records

What Thelbert means

Thelbert is a given name.

Origin, language, and formation

Thelbert is used in English.

American usage and historical context

In the United States, 931 boys were recorded with the name Thelbert between 1908 and 1985. Its highest annual count was 32 in 1921; its best national rank was #1,144 in 1913.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Thelbert?

Thelbert had fewer than 5 recorded uses in 2025, so these figures use 1985, the last year it was published.

Among all babies, 1985
1 in 714,000
5 of 3,568,740 births
Among boys only
1 in 370,000
<0.01% of boys
Rank, 1985
Unranked
Fewer than 5 uses
Coin-flip room size
494,734 kids
Even odds of a second one

Where Thelbert sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 1985 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 494,734 children born in 1985 and it's an even bet that one of them is another Thelbert. In a class of 30 the chance is Under 1%.

When Thelberts were born

Half of everyone ever recorded as Thelbert was born before 1933 — so the typical Thelbert is around 92 today.

Median birth year
1933
About 92 years old
Biggest decade
1920s
24.7% of all use
Born in the last 25 years
7.0%
Mostly a past generation
Recorded since 1950
165
People you could plausibly meet
Choose a decade

1920s — 24.7% of all recorded uses (230).

Is Thelbert rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
—
Not ranked then
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
0%
Peak was 1921 (32)
Years since peak
104
Years
Year-to-year steadiness
Shifting
22.5% average annual change
Best rank ever
#1,144
1913

Spellings of Thelbert

Thelbert is not the most common spelling — Herbert is, with 71.6% against Thelbert's 0.29%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Thelbert is used

Across 1910–2025, Thelbert was most concentrated in North Carolina — about 1 in 100,000 boys, against 1 in 285,011 across all states with data. It was least common in Virginia (1 in —).

01 per 100,000

Most concentrated

  1. 1North Carolina1 in 100,000
  2. 2Kentucky1 in —
  3. 3Tennessee1 in —
  4. 4Texas1 in —
  5. 5Virginia1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Thelbert has too little recent state data to map, so this covers all years from 1910.

Thelbert by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#1,144
1913
Peak year
1921
32 that year
First recorded
1908
Last recorded
1985
All-time count
931
Count in 2025
Under 5

Names similar to Thelbert

Matched on shared beginnings and endings, similar length, and comparable popularity.

Sibling names for Thelbert

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Thelbert