Sincere
Girl name · #3487 in 2025 · Very rare
How old is the name Sincere? In official American birth records, Sincere has been tracked continuously since 1982, giving it 43 years of documented American history.
Sincere is currently the #3487 girl name in the United States — 44 babies received it in 2025. A decade ago it stood at #3024, so the name has been falling over the past ten years. Roughly one in every 40,909 girls born in 2025 was named Sincere.
Babies named Sincere per year. Source: Official national birth records.
The 43-year story
Sincere first appears in the Social Security records in 1982, when 5 girls received the name. Its peak came in 2009, when 91 girls were named Sincere — good for #2183 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Unlock the 5-year forecast and compare Sincere against up to 5 other names.
Uniqueness: will there be another Sincere in class?
On our rarity read — which blends how common Sincere is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Sincere will likely be the only one in the room, with the occasional spelling-out as the price.
Where Sincere is most common
State-level data for Sincere is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Sincere
Statistically, parents drawn to Sincere tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Skylee, Gwenevere, Dezire, Saydee, and Klaire.
SkyleeGwenevereDezireSaydeeKlaireSkylieShayleeMaycie
Rank history (last 25 years)
| Year | Babies named Sincere | Rank |
|---|---|---|
| 2025 | 44 | #3459 |
| 2024 | 36 | #4039 |
| 2023 | 48 | #3329 |
| 2022 | 37 | #3963 |
| 2021 | 40 | #3735 |
| 2020 | 54 | #2966 |
| 2019 | 47 | #3337 |
| 2018 | 38 | #3853 |
| 2017 | 44 | #3479 |
| 2016 | 40 | #3777 |
| 2015 | 56 | #3024 |
| 2014 | 70 | #2535 |
| 2013 | 63 | #2726 |
| 2012 | 64 | #2734 |
| 2011 | 60 | #2868 |
| 2010 | 91 | #2152 |
| 2009 | 91 | #2183 |
| 2008 | 73 | #2557 |
| 2007 | 54 | #3168 |
| 2006 | 58 | #2940 |
| 2005 | 52 | #3052 |
| 2004 | 44 | #3391 |
| 2003 | 60 | #2638 |
| 2002 | 60 | #2582 |
| 2001 | 48 | #2963 |
Frequently asked questions
How old is the name Sincere?
In official American birth records, the name Sincere first appeared in 1982 (over 43 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 43 years.
Is Sincere a popular girl name?
Sincere ranked #3487 among girls in 2025 with 44 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #3024.
When was the name Sincere most popular?
Sincere peaked in 2009, when 91 American girls received the name (ranked #2183 that year). Since 2009 the name has declined from that high.
How rare is the name Sincere?
In 2025, roughly 1 in 40,909 newborn American girls was named Sincere. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.