Sianna
A feminine name of uncertain origin, possibly a combination of "Sian" and "Anna".
Name Census estimates that about 1,939 living Americans carry the first name Sianna. The name is used almost exclusively for girls. The average person named Sianna today is around 16 years old, and the year with the single highest number of Sianna births was 2024 (98 babies).
This page is the full Name Census profile for Sianna. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • Sianna is a relatively new arrival in the SSA data. The average bearer is just 16 years old, meaning it gained most of its traction in the last two decades.
People living today
1.9K
~ 1 in 176,769 Americans
Peak year
2024
98 babies that year
Average age
16
years old
2024 SSA rank
#2,003
Tracked since 1978
Popularity
Sianna: popularity over time
The SSA tracks Sianna from the 1970s through to the 2020s, spanning 6 decades of birth certificate data. The biggest single decade for the name was the 2000s, with 679 total registrations. Although the numbers have come down from the 2000s peak, Sianna remains solidly in use and shows no sign of disappearing from maternity wards.
Babies born per year
Decades
Sianna by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Sianna during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Siannas live
The SSA's state-level files cover 10 states and territories. California, Texas, New York recorded the most babies named Sianna, while North Carolina, Massachusetts, Illinois recorded the fewest. The average across all reporting states is about 72 registrations each.
Origin
Meaning and history of Sianna
The name Sianna is thought to have its origins in the ancient Celtic languages spoken across parts of Europe. It is believed to be derived from the Gaelic word "sìon," meaning "storm" or "gale." The name likely emerged during the Middle Ages, as Gaelic culture and traditions were widespread across the British Isles.
One of the earliest recorded instances of the name Sianna can be found in a 13th-century Welsh manuscript, where it appears as "Sianna ferch Rhys," referring to a woman named Sianna, daughter of Rhys. This suggests that the name was in use among the Celtic populations of Wales during this period.
In Irish folklore, there are references to a legendary figure named Sianna, a powerful druidess and healer who was said to possess great knowledge of the natural world and the ability to control the elements. This mythical figure may have contributed to the popularity and symbolic significance of the name.
Throughout history, several notable women have borne the name Sianna. One of the earliest was Sianna of Kildare (c. 1215-1290), an Irish noblewoman and landowner who played a significant role in the political affairs of her time.
Another prominent figure was Sianna de Montfort (c. 1292-1358), a French-English noblewoman and heiress who inherited vast estates and wielded considerable influence in medieval England.
In the 16th century, Sianna Caracciolo (1515-1585) was an Italian Renaissance poet and writer who gained recognition for her literary works and patronage of the arts.
During the 17th century, Sianna O'Cahan (1628-1692) was an Irish chieftain's daughter who became a renowned leader and negotiator, playing a crucial role in the Irish Confederate Wars.
In more recent times, Sianna Platten (1867-1935) was a British suffragette and activist who fought for women's rights and political representation in the early 20th century.
While these are just a few examples, the name Sianna has been carried by women throughout history, often associated with strength, resilience, and a connection to nature and the elements.
People
Sianna + last name combinations
How many people share a full name with Sianna as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with S
Other first names starting with S with a similar number of bearers.
FAQ
Sianna: questions and answers
How many people in the U.S. are named Sianna?
Name Census puts the figure at roughly 1,939 living Americans. We arrive at this by taking every SSA birth registration for Sianna going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 176,769 US residents.
Is Sianna a common name?
We classify Sianna as "Rare". It ranks above 93.6% of all first names in the SSA dataset by living bearers. Across the full history of the data, 1,965 babies have been registered with this name.
When was Sianna most popular?
The single biggest year for Sianna was 2024, when 98 babies received the name. The fact that the average living Sianna is about 16 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
Is Sianna a female name?
Yes, 100.0% of people registered as Sianna in the SSA data are female. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.