Lillia
Girl name · #3001 in 2025 · Very rare
How old is the name Lillia? In official American birth records, Lillia has been tracked continuously since 1881, giving it 144 years of documented American history.
Lillia is currently the #3001 girl name in the United States — 55 babies received it in 2025. A decade ago it stood at #2773, so the name has been falling over the past ten years. Roughly one in every 32,727 girls born in 2025 was named Lillia.
Babies named Lillia per year. Source: Official national birth records.
The 144-year story
Lillia first appears in the Social Security records in 1881, when 7 girls received the name. Its peak came in 2013, when 73 girls were named Lillia — good for #2458 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 Lillia against up to 5 other names.
Uniqueness: will there be another Lillia in class?
On our rarity read — which blends how common Lillia is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Lillia will likely be the only one in the room, with the occasional spelling-out as the price.
Where Lillia is most common
State-level data for Lillia 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 Lillia
Statistically, parents drawn to Lillia tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Italia, Kahlia, Yulia, Tahlia, and Adelia.
ItaliaKahliaYuliaTahliaAdeliaMeliaAzaliaHalia
Rank history (last 25 years)
| Year | Babies named Lillia | Rank |
|---|---|---|
| 2025 | 55 | #2998 |
| 2024 | 51 | #3119 |
| 2023 | 57 | #2936 |
| 2022 | 56 | #2956 |
| 2021 | 48 | #3297 |
| 2020 | 39 | #3735 |
| 2019 | 42 | #3611 |
| 2018 | 45 | #3438 |
| 2017 | 45 | #3436 |
| 2016 | 64 | #2697 |
| 2015 | 63 | #2773 |
| 2014 | 69 | #2560 |
| 2013 | 73 | #2458 |
| 2012 | 70 | #2568 |
| 2011 | 69 | #2589 |
| 2010 | 60 | #2870 |
| 2009 | 56 | #3047 |
| 2008 | 68 | #2690 |
| 2007 | 72 | #2568 |
| 2006 | 61 | #2850 |
| 2005 | 63 | #2670 |
| 2004 | 59 | #2742 |
| 2003 | 57 | #2737 |
| 2002 | 31 | #4071 |
| 2001 | 22 | #5174 |
Frequently asked questions
How old is the name Lillia?
In official American birth records, the name Lillia first appeared in 1881 (over 144 years ago), when 7 newborn girls received the name. It has over a century of continuous American history.
Is Lillia a popular girl name?
Lillia ranked #3001 among girls in 2025 with 55 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2773.
When was the name Lillia most popular?
Lillia peaked in 2013, when 73 American girls received the name (ranked #2458 that year). Since 2013 the name has declined from that high.
How rare is the name Lillia?
In 2025, roughly 1 in 32,727 newborn American girls was named Lillia. 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.