Louisa
Girl name · #694 in 2025 · Rare
Louisa ranks #694 among American girls' names as of 2025, with 407 newborns given the name that year. A decade ago it stood at #906, so the name has been rising over the past ten years. Roughly one in every 4,423 girls born in 2025 was named Louisa.
Babies named Louisa per year. Source: SSA.
The 145-year story
Louisa first appears in the Social Security records in 1880, when 126 girls received the name. Its peak came in 2021, when 424 girls were named Louisa — good for #685 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 Louisa against up to 5 other names.
Uniqueness: will there be another Louisa in class?
On our rarity read — which blends how common Louisa is today with its five-year momentum — the name reads as "rare". A high score means genuine rarity — your Louisa will likely be the only one in the room, with the occasional spelling-out as the price.
Where Louisa is most common
Geography matters for names, and Louisa is no exception. Adjusted for how many girls are born in each state, Louisa is most common in MN (0.8 per 1,000), MA (0.8 per 1,000), WA (0.7 per 1,000), PA (0.6 per 1,000), WI (0.5 per 1,000) — against a national average of about 0.3 per 1,000 girls. These are per-capita rates, so they show where Louisa is a genuine regional favorite rather than just where the most babies are born.
Names like Louisa
Statistically, parents drawn to Louisa tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Luisa, Eloisa, Elisa, Isa, and Leyla.
LuisaEloisaElisaIsaLeylaDavinaLinaAmalia
Rank history (last 25 years)
| Year | Babies named Louisa | Rank |
|---|---|---|
| 2025 | 407 | #694 |
| 2024 | 385 | #732 |
| 2023 | 346 | #808 |
| 2022 | 340 | #822 |
| 2021 | 424 | #685 |
| 2020 | 383 | #725 |
| 2019 | 422 | #688 |
| 2018 | 386 | #731 |
| 2017 | 373 | #752 |
| 2016 | 347 | #827 |
| 2015 | 303 | #906 |
| 2014 | 281 | #954 |
| 2013 | 245 | #1017 |
| 2012 | 222 | #1119 |
| 2011 | 197 | #1217 |
| 2010 | 163 | #1402 |
| 2009 | 140 | #1602 |
| 2008 | 124 | #1774 |
| 2007 | 126 | #1726 |
| 2006 | 119 | #1743 |
| 2005 | 116 | #1704 |
| 2004 | 119 | #1630 |
| 2003 | 99 | #1858 |
| 2002 | 118 | #1573 |
| 2001 | 104 | #1726 |
Frequently asked questions
Is Louisa a popular girl name?
Louisa ranked #694 among girls in 2025 with 407 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #906.
When was the name Louisa most popular?
Louisa peaked in 2021, when 424 American girls received the name (ranked #685 that year). Since 2021 the name has declined from that high.
How rare is the name Louisa?
In 2025, roughly 1 in 4,423 newborn American girls was named Louisa. On our rarity scale (rarity blended with momentum) we classify it as "rare".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.