Declen
#12,473 in 2025Boys' nameMeaning not yet documented
Declen has been given to 82 babies in the U.S. since 2011. In 2025 it ranked #12,473 of 13,926 boys’ names in use. Its peak year was 2015, with 11 recorded.
Babies named Declen, 2025
1 in 663,000
Declen over time, 1880–2025
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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Declen?
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 boys only
- 1 in 342,000
- <0.01% of boys
- Rank, 2025
- #12,473
- of 13,926 boys’ names in use
- Coin-flip room size
- 459,581 kids
- Even odds of a second one
Where Declen sits on the popularity scale
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.
Put another way: gather 459,581 children born in 2025 and it's an even bet that one of them is another Declen. In a class of 30 the chance is Under 1%.
When Declens were born
Half of everyone ever recorded as Declen was born before 2016 — so the typical Declen is around 9 today.
- Biggest decade
- 2010s
- 75.6% of all use
- Born in the last 25 years
- 100.0%
- A modern name
- Recorded since 1950
- 82
- People you could plausibly meet
2010s — 75.6% of all recorded uses (62).
Is Declen 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
- +8
- Places climbed
- Rank vs 10 years ago
- −5,301
- Places dropped
- Births vs 10 years ago
- 0.45×
- Fewer babies than then
- Share of its own peak
- 45.5%
- Peak was 2015 (11)
- Years since peak
- 10
- Years
- Year-to-year steadiness
- Volatile
- 32.4% average annual change
Spellings of Declen
Declen is not the most common spelling — Declan is, with 51.6% against Declen's 0.07%.
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.
Declen around the world
Where Declen 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 & Wales1996–2010#4,678in 2010
- South Australia2002–2002#401in 2002
Popularity data from Office for National Statistics and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. CBS SA data under CC BY 4.0.
Declen by the numbers
The raw record for each sex the name is used for.
Names similar to Declen
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Declen
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.