Sianni
#1,629 in 2025Girls' nameMeaning not yet documented
Sianni has been given to 574 babies in the U.S. since 1996. In 2025 it ranked #1,629 of 17,293 girls’ names in use. Its peak year was 2025, with 128 recorded.
Babies named Sianni, 2025
1 in 25,900
Sianni over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Sianni?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 25,900
- 128 of 3,315,165 births
- Among girls only
- 1 in 12,600
- <0.01% of girls
- Rank, 2025
- #1,629
- of 17,293 girls’ names in use
- Coin-flip room size
- 17,953 kids
- Even odds of a second one
Where Sianni sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 17,953 children born in 2025 and it's an even bet that one of them is another Sianni. In a class of 30 the chance is Under 1%.
When Siannis were born
Half of everyone ever recorded as Sianni was born before 2022 — so the typical Sianni is around 3 today.
- Biggest decade
- 2020s
- 57.5% of all use
- Born in the last 25 years
- 92.0%
- A modern name
- Recorded since 1950
- 574
- People you could plausibly meet
2020s — 57.5% of all recorded uses (330).
Is Sianni rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- +164
- Places climbed
- Rank vs 5 years ago
- +3,836
- Places climbed
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 100.0%
- Peak was 2025 (128)
- Years since peak
- Peaking now
- At its all-time high
- Year-to-year steadiness
- Volatile
- 46.4% average annual change
Spellings of Sianni
Sianni is not the most common spelling — Gianna is, with 24.2% against Sianni's 0.13%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Where Sianni is used
Across 2016–2025, Sianni was most concentrated in North Carolina — about 1 in 33,333 girls, against 1 in 50,334 across all states with data. It was least common in Michigan (1 in 100,000).
Most concentrated
- 1North Carolina1 in 33,333
- 2Texas1 in 33,333
- 3Arizona1 in 50,000
- 4Florida1 in 50,000
- 5Georgia1 in 50,000
- 6New York1 in 50,000
- 7Virginia1 in 50,000
- 8California1 in 100,000
Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings.
Sianni by the numbers
The raw record for each sex the name is used for.
Names similar to Sianni
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Sianni
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.