Louisa
Feminine · “famous in battle”
Louisa is overwhelmingly a girls’ name — 21,932 girls against 5 boys since 1880.
Louisa is the Latin-dressed form of Louise, and behind both stands one of the oldest continuously used names in Europe — the name of Frankish kings, French kings, and a long line of daughters named after them. In English it arrived with an extra syllable and a soft landing: loo-EE-za, three beats that fall away at the end. It has been written in English parish registers, on emigration papers, and in this year's class lists.
How old is the name Louisa?
Louisa was already in use when US birth records began in 1880 — it is at least 145 years old. The typical Louisa alive today was born around 1960, making them about 65 years old. About 13,000 people named Louisa are estimated to be alive in the US today.
When was the name Louisa most popular?
Louisa peaked in 1881, reaching #119 nationally. Today it ranks #694, 575 places below that high. See the whole 1881 chart.
Louisa appears on these lists:
Where it comes from
From Hlodwig to Louisa
The story of Louisa
The root is Frankish: Hlodwig, the name of the king the Latin writers called Chlodovechus and the French later called Clovis, who ruled the Franks around the turn of the sixth century. Latinized as Ludovicus, it became Louis in French and was carried by eighteen French kings, which kept it in constant use for a thousand years. The feminine Louise followed, and Louisa is its Latinate spelling — the form favored in English and German-speaking countries from the seventeenth and eighteenth centuries onward, when Latin endings on women's names were fashionable. It crossed to America with both British and German families, and has stayed in use ever since.
Meaning
famous in battle
From the Germanic elements hlūd, 'loud, famous', and wīg, 'war, battle' — the same pair that gives Louis and Ludwig.
How the name formed
- Hlodwig
- ChlodovechusClovis
- Ludovicus
- Louis / Louise
- Louisa
Related forms: Louise · Luisa · Luisa · Luise · Luíza · Ludovica
Pronouncing Louisa
loo-EE-zuh
The middle syllable takes the stress. Some families say loo-EE-suh with a clean s, closer to the Spanish and Italian Luisa; both are long-established and neither is a correction of the other.
Nicknames for Louisa
High
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1880
- Most girls named
- 2019422 — the highest on record
- Peak rank
- #119reached in 1881
- Change vs 2022
- +19.7%407 in 2025, from 340
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Louisa in other languages
The same name elsewhere
- Louise in French — same name
- Luisa in Spanish — spelling variant
- Luisa in Italian — spelling variant
- Luise in German — spelling variant
- Luíza in Portuguese — spelling variant
- Ludovica in Italian — related form
Strongest US states over the last decade: California, New York, Texas.
Louisas among us
people named Louisa are estimated to be alive in the US today
About 1 girl in 3,949 born in 2025 was named Louisa
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
Fashion outlook
Louisa sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Louisa is headed
Louisa should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
High confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Louisa beside its neighbors
The names ranked closest to Louisa in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- Recognized across French, Spanish, Italian, German and Portuguese in barely altered forms — a name that survives border crossings intact.
- Several short forms already in circulation: Lou, Lulu, Isa. None of them need explaining.
- A documented line running back to the early Frankish kings, unbroken through French, German and English use.
- Familiar enough that nobody asks what it is, uncommon enough that a child is unlikely to share it in a classroom.
- Louisa and Louise will be confused for each other constantly — on forms, in emails, by people who have met one and are guessing at the other. Most Louisas make peace with correcting it.
- The spelling competes with Luisa, Louiza and Luiza, all in real use. Expect to spell it aloud, though the O-U opening is the one most Americans reach for first.
- The s can be voiced or unvoiced, so you will hear both loo-EE-za and loo-EE-sa. Deciding early which one your family uses saves some low-level friction later.
- It reads as belonging to an older generation to some ears, since it is strongly represented among women born decades ago — which is also precisely why it sounds unworn on a small child.
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What they receive
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Louisa
Feminine · #694 in the U.S.
Frequently asked
- How many Louisas are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 13,000 people named Louisa are estimated to be alive in the US today.
- How popular is the name Louisa in 2025?
- Louisa ranks #694 among US girl names in 2025, with 407 babies given the name.
- How rare is the name Louisa?
- About 1 in every 3,949 US girls born in 2025 was named Louisa — 407 in all.
- Will my child share the name Louisa with classmates?
- Louisa will almost certainly be the only one in school.
Ranked beside Louisa
Names sitting at a similar level of popularity right now.
Emmie#694 · Leilany#694 · Romy#694 · Rowyn#694 · Baylor#694 · Lara#691 · Billie#691 · Kinley#691
Looking for what else is popular rather than what resembles Louisa? See the current top 100.
Choosing between Louisa and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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