Dag

Boys' name

Day

Dag has been given to 61 babies in the U.S. since 1961. 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 1962, with 12 recorded.

Babies named Dag, 1971

1 in 572,000

Dag over time, 1880–2025

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Dag: meaning, origin, and history

Day

Old Norse

What Dag means

Dag means “day”, associated with dagr.

Origin, language, and formation

Dag is used in Norwegian Nynorsk and Swedish. Its origins include Old Norse.

Dag comes through Old Norse Dagr.

Related names and everyday forms

Related names include Dagur.

Pronunciation and spelling

In Swedish, Dag is pronounced /dɑːɡ/.

American usage and historical context

In the United States, 61 boys were recorded with the name Dag between 1961 and 1971. Its highest annual count was 12 in 1962; its best national rank was #2,407 in 1962.

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 Dag?

Dag had fewer than 5 recorded uses in 2025, so these figures use 1971, the last year it was published.

Among all babies, 1971
1 in 572,000
6 of 3,432,187 births
Among boys only
1 in 295,000
<0.01% of boys
Rank, 1971
Unranked
Fewer than 5 uses
Coin-flip room size
396,503 kids
Even odds of a second one

Where Dag 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 1971 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 396,503 children born in 1971 and it's an even bet that one of them is another Dag. In a class of 30 the chance is Under 1%.

When Dags were born

Half of everyone ever recorded as Dag was born before 1966 — so the typical Dag is around 59 today.

Median birth year
1966
About 59 years old
Biggest decade
1960s
82.0% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
61
People you could plausibly meet
Choose a decade

1960s — 82.0% of all recorded uses (50).

Is Dag 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 1962 (12)
Years since peak
63
Years
Year-to-year steadiness
Volatile
39.4% average annual change
Best rank ever
#2,407
1962

Dag around the world

Where Dag 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.

  • Norway
    1880–2025
    #417
    in 2025

Popularity data from Statistics Norway. SSB data under CC BY 4.0.

Dag 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
#2,407
1962
Peak year
1962
12 that year
First recorded
1961
Last recorded
1971
All-time count
61
Count in 2025
Under 5

Names similar to Dag

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

Sibling names for Dag

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 Dag