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Moon

#3,123 in 2025UnisexGirls' nameBoys' name

Multiple documented origins; meaning depends on tradition

Moon has been given to 627 babies in the U.S. since 1972. In 2025 it ranked #3,123 of 17,293 girls’ names in use. Its peak year was 2022, with 73 recorded. It's used for both sexes: 74% girls, 26% boys all-time.

Babies named Moon, 2025

1 in 63,800

Moon over time, 1880–2025

GirlsBoys
02040608018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Girls or boys — Moon over time

In 2025, Moon went to 80% girls and 20% boys.

19722025

A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.

Moon: meaning, origin, and history

Multiple documented origins; meaning depends on tradition

Deeper origin not confirmed in the cited records

What Moon means

Moon has more than one naming route in the cited origin entries: distinct naming traditions.

The naming story behind Moon

A separate documented entry treats Moon as a alternate transcription of Korean Hangul. That is a personal-name relationship, which differs from translating the letters of the modern spelling into one universal English word. The linked origin entry identifies the context of this relationship.

American usage and historical context

In the United States, 465 girls were recorded with the name Moon between 1972 and 2025. Its highest annual count was 73 in 2022; its best national rank was #2,485 in 2022.

Over 5 years its rank rose, from #4,716 in 2020 to #3,123 in 2025. Over 10 years its rank rose, from #12,646 in 2015 to #3,123 in 2025.

In the United States, 162 boys were recorded with the name Moon between 1995 and 2025. Its highest annual count was 28 in 2023; its best national rank was #3,958 in 2023.

Over 5 years its rank rose, from #7,886 in 2020 to #6,687 in 2025. Over 10 years its rank rose, from #13,409 in 2015 to #6,687 in 2025.

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.

How common is Moon?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 63,800
52 of 3,315,165 births
Among girls only
1 in 30,900
<0.01% of girls
Rank, 2025
#3,123
of 17,293 girls’ names in use
Coin-flip room size
44,191 kids
Even odds of a second one

Where Moon 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 2025 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 44,191 children born in 2025 and it's an even bet that one of them is another Moon. In a class of 30 the chance is Under 1%.

When Moons were born

Half of everyone ever recorded as Moon was born before 2021 — so the typical Moon is around 4 today.

Median birth year
2021
About 4 years old
Biggest decade
2020s
64.5% of all use
Born in the last 25 years
91.4%
A modern name
Recorded since 1950
465
People you could plausibly meet
Choose a decade

2020s — 64.5% of all recorded uses (300).

Is Moon 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
+246
Places climbed
Rank vs 5 years ago
+1,593
Places climbed
Rank vs 10 years ago
+9,523
Places climbed
Births vs 10 years ago
6.50×
More babies than then
Share of its own peak
71.2%
Peak was 2022 (73)
Years since peak
3
Years
Year-to-year steadiness
Volatile
36.8% average annual change
Best rank ever
#2,485
2022

Spellings of Moon

Moon is not the most common spelling — Joan is, with 81.7% against Moon's 0.08%.

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 Moon is used — girls

Across 1910–2025, Moon was most concentrated in California — about 1 in — girls, against 1 in 443,531 across all states with data. It was least common in Texas (1 in —).

00 per 100,000

Most concentrated

  1. 1California1 in —
  2. 2Florida1 in —
  3. 3New York1 in —
  4. 4Ohio1 in —
  5. 5Texas1 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. Moon has too little recent state data to map, so this covers all years from 1910.

Where Moon is used — boys

Across 1910–2025, Moon was most concentrated in California — about 1 in — boys, against 1 in 3,069,616 across all states with data. It was least common in Texas (1 in —).

00 per 100,000

Most concentrated

  1. 1California1 in —
  2. 2Texas1 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. Moon has too little recent state data to map, so this covers all years from 1910.

Moon around the world

Where Moon ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    2023–2025
    #4,867
    in 2025
  • France
    2009–2025
    #4,109
    in 2025
  • Canada
    2023–2024
    #3,027
    in 2024

Popularity data from Office for National Statistics, Institut national de la statistique et des études économiques and Statistics Canada. ONS data under Open Government Licence v3.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.

Moon by the numbers

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

As a girl's name

Rank in 2025
#3,123
Trend vs 5 yrs ago
Up 1,593
Best rank ever
#2,485
2022
Peak year
2022
73 that year
First recorded
1972
Last recorded
2025
All-time count
465
Count in 2025
52

As a boy's name

Rank in 2025
#6,687
Trend vs 5 yrs ago
Up 1,199
Best rank ever
#3,958
2023
Peak year
2023
28 that year
First recorded
1995
Last recorded
2025
All-time count
162
Count in 2025
13

Names similar to Moon

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

JoonMoonaMooreaMooMaysoonSoonYoonMoonieMooneNoonMoonyeenMooneeHayoonMoonyeanSeoyoonMoonlight

Sibling names for Moon

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 Moon

Top names of 2022, Moon's peak yearThe 2020s in fullOther names that peaked in 2022Girls' names starting with M