Declan

Declan is a male given name: 99% of people named Declan are men, and it is recorded as male in 3 of the 3 countries covered.

MaleHigh

Male 99%Female 1%

Verdict: Male
Male / female split: 99% male / 1% female
Confidence: High (64 or more weighted country observations)
Most common in: United States, Ireland, Great Britain
US births since 1880: 31,956 male / 174 female
Data: nam_dict (GFDL) + US SSA
Updated: 2026-09-11

How to address Declan

When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Declan," in English, "Guten Tag Declan," in German. Declan is a male given name: about 99% of people named Declan are men. A quick look at a profile confirms it for certain.

Ready-made greetings in six languages

English

Dear Declan,

German

Guten Tag Declan,

French

Bonjour Declan,

Spanish

Estimado/a Declan:

Chinese

Declan您好：

Japanese

Declan様

English

Hi Declan,

German

Hi Declan,

French

Salut Declan,

Spanish

Hola Declan,

Chinese

Declan你好：

Japanese

Declanさん

Greeting generator

This is a statistical estimate, not a statement about the gender, identity or correct form of address of any particular person.

Country breakdown

Gender of the name Declan by country (nam_dict, 55 country columns)
Country	How common	Usually	Male share
United States	common	man's name	100%
Ireland	common	man's name	98%
Great Britain	rare	man's name	98%

United States birth data

31,956 male · 174 female · 32,130 births recorded

Male 99%Female 1%

Since 1980: 99% male.

Frequently asked questions

Is Declan a male or female name?

Declan is a male given name: 99% of people named Declan are men, and it is recorded as male in 3 of the 3 countries covered.

How do I address Declan in an email?

Is Declan a unisex name?

Declan is not a unisex name: 99% of people named Declan are men. Declan leans strongly male overall.

Sources

Gender by country: nam_dict, the c't first-names dictionary by Joerg Michael, roughly 44,000 names across 55 countries, licensed GFDL. US frequencies: United States Social Security Administration baby-name data, public domain. Method: how we classify names. Full dataset: data & licences. Data built 2026-09-11.

Cite this page

DearWho, "Is Declan a male or female name?", https://dearwho.vercel.app/name/declan (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.

BibTeX

@misc{dearwho_declan,
  title  = {Is Declan a male or female name?},
  author = {{DearWho}},
  year   = {2026},
  url    = {https://dearwho.vercel.app/name/declan},
  note   = {Data: nam_dict (GFDL), US SSA public domain}
}