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Tatsuko

Girls' name

From Japanese たつこ; literal meaning unconfirmed

Tatsuko has been given to 39 babies in the U.S. since 1916. 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 1916, with 14 recorded.

Babies named Tatsuko, 1928

1 in 226,000

Tatsuko over time, 1880–2025

Girls
05101518801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Tatsuko: meaning, origin, and history

From Japanese たつこ; literal meaning unconfirmed

Japanese

What Tatsuko means

Tatsuko is a given name.

Origin, language, and formation

Tatsuko is used in English and Tagalog. Its origins include Japanese.

Tatsuko comes through Japanese たつこ.

Pronunciation and spelling

In Tagalog, Tatsuko is pronounced /taˈt͡suko/.

American usage and historical context

In the United States, 39 girls were recorded with the name Tatsuko between 1916 and 1928. Its highest annual count was 14 in 1916; its best national rank was #2,355 in 1916.

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 Tatsuko?

Tatsuko had fewer than 5 recorded uses in 2025, so these figures use 1928, the last year it was published.

Among all babies, 1928
1 in 226,000
10 of 2,260,857 births
Among girls only
1 in 115,000
<0.01% of girls
Rank, 1928
Unranked
Fewer than 5 uses
Coin-flip room size
156,712 kids
Even odds of a second one

Where Tatsuko sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 1928 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 156,712 children born in 1928 and it's an even bet that one of them is another Tatsuko. In a class of 30 the chance is Under 1%.

When Tatsukos were born

Half of everyone ever recorded as Tatsuko was born before 1923 — so the typical Tatsuko is around 102 today.

Median birth year
1923
About 102 years old
Biggest decade
1920s
51.3% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
0
People you could plausibly meet
Choose a decade

1920s — 51.3% of all recorded uses (20).

Is Tatsuko 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 1916 (14)
Years since peak
109
Years
Year-to-year steadiness
Volatile
82.1% average annual change
Best rank ever
#2,355
1916

Spellings of Tatsuko

Tatsuko is not the most common spelling — Mitsuko is, with 93.5% against Tatsuko's 6.5%.

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 Tatsuko is used

Across 1910–2025, Tatsuko was most concentrated in Hawaii — about 1 in 33,333 girls, against 1 in 915,258 across all states with data. It was least common in California (1 in —).

03 per 100,000

Most concentrated

  1. 1Hawaii1 in 33,333
  2. 2California1 in —

Shading is the share of that state's recorded girls 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. Tatsuko has too little recent state data to map, so this covers all years from 1910.

Tatsuko by the numbers

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

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#2,355
1916
Peak year
1916
14 that year
First recorded
1916
Last recorded
1928
All-time count
39
Count in 2025
Under 5

Names similar to Tatsuko

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

TateanaTatyonaTatanyaTatishaTatashaTatelynTatianahTatyaniaTatianyaTatyianaTatelynnTatyanahTathianaTateyanaTateumTatijanaTatiaraTatinaTateannaTationaTatyonnaKatsukoTsuyukoTatiauna

Sibling names for Tatsuko

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 Tatsuko

Top names of 1916, Tatsuko's peak yearThe 1910s in fullOther names that peaked in 1916Girls' names starting with T