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.
For a British comparison, Name Census UK has a UK baby-name profile for Sianna with official rankings and popularity over time.
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
Census
Sianna in the 2020 Census
The 2020 Census recorded 1,347 people with the first name Sianna, which placed it at #10,044 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#10,044
National first-name rank
People counted
1.3K
1,347 in the published race/origin table
Per 100,000
0.4
People with this name in 2020
Largest reported group
Hispanic or Latino
33.8% of people with this name
Demographics
Ancestry and ethnicity for Sianna
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Sianna is Hispanic at 33.8%. The next largest groups are White (33.0%) and Black (17.7%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Sianna described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Sianna at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino33.8% · 455
- White33.0% · 445
- Black or African American17.7% · 238
- Two or more races8.6% · 116
- Asian and Pacific Islander5.1% · 69
- American Indian and Alaska Native1.8% · 24
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.
How common was Sianna in the 2020 Census?
The published 2020 Census first-name tables recorded 1,347 people with the name Sianna, or 0.45 per 100,000 residents. That placed it at #10,044 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Sianna in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Sianna?
In the 2020 Census sex table, Sianna appears almost entirely female. Of the 1,355 people counted with this name, 99.4% were female and only a very small share were male. The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Sianna?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Sianna is Hispanic at 33.8%. The next largest groups are White (33.0%) and Black (17.7%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Sianna most often in the Census?
Hispanic is the largest reported group for people named Sianna in the 2020 Census, accounting for 33.8% (455 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Sianna in that year. That makes it useful for spotting when the name rose, peaked, or faded.
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.
Is Sianna still being used today?
Yes. The SSA still recorded Sianna in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Sianna can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
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.
How many people share the name Sianna?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.