Day

#15,477 in 2025UnisexGirls' nameBoys' name

Literal meaning not recorded

Day has been given to 308 babies in the U.S. since 1942. In 2025 it ranked #15,477 of 17,293 girls’ names in use. Its peak year was 1973, with 12 recorded. It's used for both sexes: 54% girls, 46% boys all-time.

Babies named Day, 2025

1 in 663,000

Day over time, 1880–2025

GirlsBoys

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.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

In 2025, Day went to 45% girls and 55% boys.

19152025

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.

Day: meaning, origin, and history

Literal meaning not recorded

Deeper origin not confirmed in the cited records

What Day means

Day is a given name.

Dictionary etymologyReferences, data & attribution

This surname has multiple origins. Besides the ones listed below, Norman origin has also been suggested from De Haie", or "a corruption of the Normandy French D'Ossone, from the town of Ossone, in Normandy".

Excerpt from Wiktionary: Day (English) · CC BY-SA 4.0

Wiktionary material is available under CC BY-SA 4.0.

Origin, language, and formation

Day is used in English.

Pronunciation and spelling

In English, Day is pronounced /deɪ/.

American usage and historical context

In the United States, 166 girls were recorded with the name Day between 1942 and 2025. Its highest annual count was 12 in 1973; its best national rank was #3,835 in 1955.

Over 5 years its rank rose, from #15,696 in 2020 to #15,477 in 2025.

In the United States, 142 boys were recorded with the name Day between 1915 and 2025. Its highest annual count was 7 in 1922; its best national rank was #3,147 in 1932.

Over 10 years its rank rose, from #12,501 in 2015 to #10,962 in 2025.

How common is Day?

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

Among all babies, 2025: 1 in 663,000; 5 of 3,315,165 births
Among girls only: 1 in 321,000; <0.01% of girls
Rank, 2025: #15,477; of 17,293 girls’ names in use
Coin-flip room size: 459,581 kids; Even odds of a second one

Where Day 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 459,581 children born in 2025 and it's an even bet that one of them is another Day. In a class of 30 the chance is Under 1%.

When Days were born

Half of everyone ever recorded as Day was born before 1976 — so the typical Day is around 49 today.

Median birth year: 1976; About 49 years old
Biggest decade: 1970s; 44.6% of all use
Born in the last 25 years: 36.7%; Spread across generations
Recorded since 1950: 160; People you could plausibly meet

Choose a decade

1970s — 44.6% of all recorded uses (74).

Is Day 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: +219; Places climbed
Rank vs 10 years ago: —; Not ranked then
Births vs 10 years ago: —; Not published both years
Share of its own peak: 41.7%; Peak was 1973 (12)
Years since peak: 52; Years
Year-to-year steadiness: Volatile; 30.9% average annual change
Best rank ever: #3,835; 1955

Day by the numbers

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

As a girl's name

Rank in 2025: #15,477
Trend vs 5 yrs ago: Up 219
Best rank ever: #3,835; 1955
Peak year: 1973; 12 that year
First recorded: 1942
Last recorded: 2025
All-time count: 166
Count in 2025: 5

As a boy's name

Rank in 2025: #10,962
Trend vs 5 yrs ago: New entry
Best rank ever: #3,147; 1932
Peak year: 1922; 7 that year
First recorded: 1915
Last recorded: 2025
All-time count: 142
Count in 2025: 6

Names similar to Day

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

Dayan Dayli Dayah Daylah Daya Dayrin Dayzee Dayne Daylen Daysy Dayanne Daylee Ariday Dayton Dayanni Dayra Daysi Dayani Daylynn Daysie Dayona Daylyn Dayja Daylani

Sibling names for Day

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

Tressa Kesha Kerrie Karie Melonie Sharla Michell Nakia

For a brother

Shon Jerod Scot Edwardo Tracey Stacey Berry Kelley

Explore around Day

Top names of 1973, Day's peak year The 1970s in full Other names that peaked in 1955 Girls' names starting with D Summer Names