Declyn: Name Popularity, History & Rankings (1880

Rank 2025

#4,575

among boys · ↑535 vs 2024

Babies in 2025

named Declyn

How common

1 in 77,640

boys born in 2025

Peak year

2018

70 babies

All-time total

768

#8,268 all-time among boys

First recorded

2004

in Social Security records

Declyn popularity over time

768 babies have been named Declyn since 2004, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure

Births per 1,000 babies of that sex, comparable across eras

BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade	Girls	Boys	Total	Per year	Change	Best rank
1880s	–	–	–	–	–	–
1890s	–	–	–	–	–	–
1900s	–	–	–	–	–	–
1910s	–	–	–	–	–	–
1920s	–	–	–	–	–	–
1930s	–	–	–	–	–	–
1940s	–	–	–	–	–	–
1950s	–	–	–	–	–	–
1960s	–	–	–	–	–	–
1970s	–	–	–	–	–	–
1980s	–	–	–	–	–	–
1990s	–	–	–	–	–	–
2000s	11	13	24	2	–	#10,109
2010s	168	276	444	44	+1750%	#2,896
2020s (to 2025)	128	172	300	50	+13%	#3,087

Where Declyn is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year	Projected babies	Per 1,000 boys	Implied rank
2026	21	0.01	outside top 500
2027	20	0.01	outside top 500
2028	19	0.01	outside top 500
2029	18	0.01	outside top 500
2030	18	0.01	outside top 500

The story of Declyn

Declyn is rare for boys in the United States, ranked #4,575 in 2025 with 22 babies given the name. It is currently holding steady compared with a decade ago.

Since 2004, 768 American babies have been named Declyn, about 60% boys and 40% girls, making it a genuinely unisex name. Its peak came in 2018, when 70 newborns received the name, the signature sound of the 2010s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Declyn stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Declyn?

The median living Declyn is about 7 years old; half are between 4 and 10. An estimated 800 people named Declyn are alive in the United States today.

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Declyn year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year	Girls	Girls rank	Boys	Boys rank
2025	17	#6,607	22	#4,575
2024	20	#5,999	19	#5,110
2023	18	#6,483	28	#3,915
2022	19	#6,276	34	#3,426
2021	25	#5,125	39	#3,087
2020	29	#4,572	30	#3,593
2019	16	#7,113	28	#3,821
2018	30	#4,589	40	#2,959
2017	24	#5,410	30	#3,606
2016	20	#6,236	41	#2,896
2015	23	#5,705	31	#3,534
2014	21	#6,041	30	#3,552
2013	9	#11,249	27	#3,774
2012	16	#7,545	18	#5,082
2011	9	#11,433	19	#4,856
2010	–	–	12	#6,776
2009	6	#15,734	7	#10,109
2008	–	–	–	–
2007	–	–	6	#11,257
2006	–	–	–	–
2005	–	–	–	–
2004	5	#16,779	–	–
2003	–	–	–	–
2002	–	–	–	–
2001	–	–	–	–
2000	–	–	–	–
1995	–	–	–	–
1990	–	–	–	–
1985	–	–	–	–
1980	–	–	–	–
1975	–	–	–	–
1970	–	–	–	–
1965	–	–	–	–
1960	–	–	–	–
1955	–	–	–	–
1950	–	–	–	–
1945	–	–	–	–
1940	–	–	–	–
1935	–	–	–	–
1930	–	–	–	–
1925	–	–	–	–
1920	–	–	–	–
1915	–	–	–	–
1910	–	–	–	–
1905	–	–	–	–
1900	–	–	–	–
1895	–	–	–	–
1890	–	–	–	–
1885	–	–	–	–
1880	–	–	–	–

Frequently asked questions

Quick answers about Declyn, drawn from the same Social Security data as the charts above.

How old is the average Declyn?

The median living Declyn is about 7 years old. Half of all living Declyns are between 4 and 10 years old.

How many people named Declyn are alive today?

An estimated 800 people named Declyn are alive in the United States, based on 768 recorded births and Social Security life tables.

How popular is the name Declyn in 2025?

Declyn ranked #4,575 among boys' names in the United States in 2025, with 22 babies given the name, according to Social Security Administration data.

How many people are named Declyn?

768 babies have been named Declyn in the United States since 2004, based on Social Security card applications.

When was the name Declyn most popular?

Declyn peaked in 2018, when 70 newborns received the name.

Is Declyn a boy or girl name?

Declyn is used for both: about 40% of babies named Declyn have been girls and 60% boys.

Is the name Declyn rising or falling?

Declyn has been roughly stable over the past decade.

Will Declyn become more popular?

Declyn is trending downward. If the recent trend holds, we project roughly 18 boys named Declyn in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Declyn

Names that sound and feel close to Declyn: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Declyn with similar names → More names starting with D →