Lousia
A feminine given name of French origin meaning "renowned warrior".
Name Census estimates that about 5 living Americans carry the first name Lousia. The name is used almost exclusively for girls. The average person named Lousia today is around 52 years old, and the year with the single highest number of Lousia births was 1919 (7 babies).
This page is the full Name Census profile for Lousia. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • Fewer than 100 living Americans are believed to carry the name Lousia. It is among the rarest names in the SSA records.
People living today
5
~ 1 in 68,550,868 Americans
Peak year
1919
7 babies that year
Average age
52
years old
1970 SSA rank
#8,757
Tracked since 1886
Census
Lousia in the 2020 Census
The 2020 Census recorded 109 people with the first name Lousia, which placed it at #52,143 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#52,143
National first-name rank
People counted
109
109 in the published race/origin table
Per 100,000
0.0
People with this name in 2020
Largest reported group
White
52.3% of people with this name
Demographics
Ancestry and ethnicity for Lousia
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Lousia is White at 52.3%. The next largest groups are Hispanic (28.4%) and Black (10.1%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Lousia described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Lousia at the time of the 2020 Census, not any inherent property of the name itself.
- White52.3% · 57
- Hispanic or Latino28.4% · 31
- Black or African American10.1% · 11
- Asian and Pacific Islander4.6% · 5
- Two or more races4.6% · 5
Popularity
Lousia: popularity over time
The SSA tracks Lousia from the 1880s through to the 1970s, spanning 3 decades of birth certificate data. The biggest single decade for the name was the 1910s, with 7 total registrations. Although the numbers have come down from the 1910s peak, Lousia remains solidly in use and shows no sign of disappearing from maternity wards.
Babies born per year
Decades
Lousia by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Lousia during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Origin
Meaning and history of Lousia
The name Lousia originates from the French language and is a feminine form of the name Louis, which is derived from the Old Frankish "Hlodowic" or "Chlodovechus." The name Hlodowic is composed of the Germanic elements "hlod" meaning "famous" and "wic" meaning "warrior" or "battle." It is believed to have emerged during the Merovingian dynasty in the 5th to 8th centuries in what is now modern-day France.
One of the earliest recorded instances of the name Lousia can be found in the 12th century, when it was used by Lousia of Loon, a countess of the County of Loon in the Low Countries. In the 13th century, the name gained prominence with Lousia of Savoy, a French princess who married King Philip III of France.
During the Renaissance period, the name Lousia was associated with several notable figures. Lousia Labé, a French Renaissance poet and feminist writer from Lyon, lived from 1520 to 1566 and was renowned for her defiant and unconventional works. Lousia of Lorraine, a 16th-century French princess and Duchess of Lorraine, played a significant role in the religious conflicts of her time.
In the 18th century, Lousia Élisabeth de France, also known as Madame Élisabeth, was the youngest sister of King Louis XVI of France. She remained a steadfast supporter of the monarchy during the French Revolution and was eventually executed by guillotine in 1794.
Another prominent figure with the name Lousia was Lousia May Alcott, the American novelist best known for her classic novel "Little Women." She lived from 1832 to 1888 and was an influential figure in the literary world, advocating for women's rights and abolition.
Throughout history, the name Lousia has been borne by various notable individuals across different fields, including literature, politics, and the arts. While its origins can be traced back to the Frankish language and the Merovingian dynasty, the name has transcended borders and cultures, becoming a beloved and enduring choice for parents around the world.
People
Lousia + last name combinations
How many people share a full name with Lousia as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with L
Other first names starting with L with a similar number of bearers.
FAQ
Lousia: questions and answers
How many people in the U.S. are named Lousia?
Name Census puts the figure at roughly 5 living Americans. We arrive at this by taking every SSA birth registration for Lousia going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 68,550,868 US residents.
Is Lousia a common name?
We classify Lousia as "Very Rare". It ranks above 18.2% of all first names in the SSA dataset by living bearers. Across the full history of the data, 17 babies have been registered with this name.
When was Lousia most popular?
The single biggest year for Lousia was 1919, when 7 babies received the name. The fact that the average living Lousia is about 52 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Lousia in the 2020 Census?
The published 2020 Census first-name tables recorded 109 people with the name Lousia, or 0.04 per 100,000 residents. That placed it at #52,143 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Lousia in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Lousia?
In the 2020 Census sex table, Lousia appears almost entirely female. Of the 108 people counted with this name, 99.1% were female and only a very small share were male. The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Lousia?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Lousia is White at 52.3%. The next largest groups are Hispanic (28.4%) and Black (10.1%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Lousia most often in the Census?
White is the largest reported group for people named Lousia in the 2020 Census, accounting for 52.3% (57 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Lousia in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Lousia a female name?
Yes, 100.0% of people registered as Lousia in the SSA data are female. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Lousia still being used today?
Yes. The SSA still recorded Lousia in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Lousia can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How many people have the name Lousia?
For a quick modern take, check how many people share the name Lousia on our sister site HowManyOfMe.org.