How rare is the name Declan?

39,020 people in the United States have the first name Declan, about 1 in 7,740. It ranks #1,065 of 53,615 first names in the 2020 Census.

first name

DECLAN

#1,065

of 53,615 first names recorded in the 2020 Census

People
39,020
About
1 in 7,740
This common or more
70.9%
Who bears it

Of the 39,020 people named Declan, 85% reported their origin as White, 6.5% as two or more races and 6% as Hispanic or Latino. 99.4% are male. These count how people described themselves on the 2020 Census, not where the name comes from.

Declan peaked in 2019, when 4,007 babies got the name.

Births per year, SSA records 1880–2025
19512025
Peak year
2019
Births that year
4,007
In 2025*
2,587 ▼35%
Recorded as
almost entirely male

At least 58,950 babies have been given the name since 1951. Years SSA withheld, because fewer than 5 were born, are skipped rather than drawn as zero. * 2025 is the newest year published and it undercounts: a card application is filed some time after a birth.

Declan by decade

Among all names given to American babies, its best decade was the 2020s, when it ranked #198. The largest share of babies named Declan, 74.6%, were born in 2013 or later.

1950s#9,90327
1960s#7,75970
1970s#11,63853
1980s#7,847145
1990s#2,4851,135
2000s#8137,280
2010s#22331,336
2020s#19818,904
Baby boom 1946–640.1%
Generation X 1965–800.2%
Millennials 1981–961%
Generation Z 1997–1224.1%
2013 and later74.6%

Rank counts both sexes together, among every name SSA recorded that decade; the number under it is births. The 2020s run only to 2025. Generation years follow Pew Research Center, which has not named a generation after 2012.

Where Declan is most common

Compared with all babies born in each state since 1910, Declan has been most common in New Hampshire (2.6×), Alaska (2.3×), and Idaho (2.3×), and least common in Mississippi (0.31×).

57,533 births recorded by state, 1910–2025. 2× means twice as common as nationally. States with fewer than 30 such births are left blank, and SSA withholds any year with fewer than 5 in a state, so small states read low.

Either side of Declan

#1,063 Trey · 39,163#1,064 Kasey · 39,152#1,066 Emanuel · 38,945#1,067 Loren · 38,871

Spelled almost the same

One first name in the 2020 Census spelled within a letter or two of Declan, most common first.

#8,496 Deklan · 1,705

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