Natsuko

Girls' name

Japanese name; meaning depends on kanji

Natsuko has been given to 155 babies in the U.S. since 1913. 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 1925, with 17 recorded.

Babies named Natsuko, 1994

1 in 413,000

Natsuko over time, 1880–2025

Girls

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Natsuko: meaning, origin, and history

Japanese name; meaning depends on kanji

Japanese

What Natsuko means

Natsuko is documented with more than one possible Japanese character combination. The Latin-letter spelling records a pronunciation; it does not specify one unique kanji spelling or one universal meaning.

Possible character meanings include summer, child.

Documented naming usage and pronunciation

Natsuko is used in Japanese.

Another recorded pronunciation is /nä.t͡sɨᵝ.ko̞/ and /nät͡s.ko̞/ for Natsuko.

Origin, language, and formation

Natsuko is used in English, French and Tagalog. Its origins include Japanese.

Natsuko comes through Japanese なつこ.

Pronunciation and spelling

In French, Natsuko is pronounced /nat.su.ko/.

American usage and historical context

In the United States, 155 girls were recorded with the name Natsuko between 1913 and 1994. Its highest annual count was 17 in 1925; its best national rank was #2,258 in 1925.

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 Natsuko?

Natsuko had fewer than 5 recorded uses in 2025, so these figures use 1994, the last year it was published.

Among all babies, 1994: 1 in 413,000; 9 of 3,715,972 births
Among girls only: 1 in 198,000; <0.01% of girls
Rank, 1994: Unranked; Fewer than 5 uses
Coin-flip room size: 286,192 kids; Even odds of a second one

Where Natsuko 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 1994 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 286,192 children born in 1994 and it's an even bet that one of them is another Natsuko. In a class of 30 the chance is Under 1%.

When Natsukos were born

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

Median birth year: 1923; About 102 years old
Biggest decade: 1920s; 56.8% of all use
Born in the last 25 years: 9.7%; Mostly a past generation
Recorded since 1950: 15; People you could plausibly meet

Choose a decade

1920s — 56.8% of all recorded uses (88).

Is Natsuko 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 1925 (17)
Years since peak: 100; Years
Year-to-year steadiness: Volatile; 41.7% average annual change
Best rank ever: #2,258; 1925

Spellings of Natsuko

Natsuko is not the most common spelling — Mitsuko is, with 78.5% against Natsuko's 21.5%.

Mitsuko78.5%565
Natsuko21.5%155

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 Natsuko is used

Across 1910–2025, Natsuko was most concentrated in Hawaii — about 1 in 7,143 girls, against 1 in 7,331 across all states with data.

1414 per 100,000

State popularity map

Most concentrated

1Hawaii1 in 7,143

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. Natsuko has too little recent state data to map, so this covers all years from 1910.

Natsuko 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: #2,258; 1925
Peak year: 1925; 17 that year
First recorded: 1913
Last recorded: 1994
All-time count: 155
Count in 2025: Under 5

Names similar to Natsuko

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

Natsumi Natalija Nathalya Natacia Natelie Nathali Natanya Nation Natoria Natonya Natania Natalyn Nattaly Nataliah Natalea Natajah Natilie Natasja Natalynn Natalin Natara Natalyia Natalye Nathania

Sibling names for Natsuko

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

For a sister

Concepcion Easter Gene Rosina Kattie Lavon Blanch Jaunita

For a brother

Domenick Hosea Rollin Alvis Jewel Eldridge Lenard Merritt

Explore around Natsuko

Top names of 1925, Natsuko's peak year The 1920s in full Other names that peaked in 1925 Girls' names starting with N