How rare is the name Siobhan?

7,208 people in the United States have the first name Siobhan, about 1 in 41,902. It ranks #3,068 of 53,615 first names in the 2020 Census.

first name

SIOBHAN

#3,068

of 53,615 first names recorded in the 2020 Census

People
7,208
About
1 in 41,902
This common or more
81.6%
Who bears it

Of the 7,208 people named Siobhan, 77.6% reported their origin as White, 9.7% as Black and 5.8% as two or more races. Virtually all are female (99.7%). These count how people described themselves on the 2020 Census, not where the name comes from.

Siobhan peaked in 1980, when 282 babies got the name.

Births per year, SSA records 1880–2025
19562025
Peak year
1980
Births that year
282
In 2025*
90 ▼68%
Recorded as
almost entirely female

At least 7,399 babies have been given the name since 1956. 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.

Siobhan by decade

Among all names given to American babies, its best decade was the 1980s, when it ranked #1,400. The largest share of babies named Siobhan, 37.5%, were born between 1981 and 1996, as millennials.

1950s#3,400265
1960s#1,955869
1970s#1,966996
1980s#1,4002,086
1990s#2,2311,334
2000s#4,047758
2010s#5,301548
2020s#3,798543
Baby boom 1946–649.2%
Generation X 1965–8023.4%
Millennials 1981–9637.5%
Generation Z 1997–1217.8%
2013 and later12.1%

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 Siobhan is most common

Compared with all babies born in each state since 1910, Siobhan has been most common in Massachusetts (6.6×), New York (3.9×), and New Jersey (2.8×), and least common in Ohio (0.36×).

4,907 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 Siobhan

#3,066 Karsyn · 7,217#3,067 Nylah · 7,211#3,069 Michell · 7,205#3,070 Marek · 7,203

Spelled almost the same

2 first names in the 2020 Census spelled within a letter or two of Siobhan, most common first.

#50,487 Siobahn · 119#53,155 Sioban · 102

Compare