2000
#27,694
National surname rank
Recorded bearers 818
First available Census row
Per 100,000 0.30
Rare Last name
Saintlouis
A locational surname referring to someone from St. Louis, France.
According to the 2020 US Census Bureau surname tables, roughly 2,524 Americans carry the last name Saintlouis. That puts it at #13,278 in the national surname ranking, appearing at a frequency of 0.74 per 100,000 people (about 1 in 135,798 residents).
This page is the full Name Census profile for the Saintlouis surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
2.5K
1 in 135,798
Census rank
#13,278
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.2K
rare in the US
Popularity narrative
The Census Bureau recorded 2,201 bearers of the surname Saintlouis in its 2020 decennial surname file. At a rate of 0.74 per 100,000 residents, it holds the 13278th position in the national surname ranking.
Among Census respondents with the surname Saintlouis, the largest self-reported group is Black at 92.3%. The next largest groups are White (3.0%) and Hispanic (2.2%).
Origin
Meaning and origin of Saintlouis
The surname SAINTLOUIS has its origins in France, dating back to the Middle Ages. It is derived from the place name Saint-Louis, which itself is a combination of the French words "saint" meaning "holy" and "Louis," a name of Germanic origin meaning "renowned warrior."
One of the earliest recorded instances of the surname SAINTLOUIS can be found in the "Livre des Bourgeois de Rouen" (Book of Burgesses of Rouen), a 14th-century manuscript listing the names of citizens in the French city of Rouen. This suggests that the name may have originated in the Normandy region of France.
During the 17th century, the name SAINTLOUIS appeared in records related to the establishment of the French colony of Saint-Louis (now modern-day St. Louis, Missouri, in the United States). Jacques de Saint-Loup, a French explorer and soldier, was granted a land concession in the area in 1763 and is considered one of the founders of the city.
In the 18th century, the French navigator and explorer Louis-Antoine de Bougainville (1729-1811) gave the name Saint-Louis to an island in the Indian Ocean, which is now part of the French territory of Réunion. This further solidified the association of the name with French exploration and colonization.
Notable individuals bearing the surname SAINTLOUIS throughout history include:
1. Jacques de Saint-Loup (c. 1720-1779), a French soldier and one of the founders of St. Louis, Missouri.
2. Louis-Antoine de Bougainville (1729-1811), a French navigator and explorer who named Saint-Louis Island in the Indian Ocean.
3. Louis-François de Saint-Louis (1776-1846), a French military officer and author who served during the French Revolutionary and Napoleonic Wars.
4. Edmond de Saint-Louis (1832-1909), a French lawyer and politician who served as a member of the National Assembly.
5. Maurice de Saint-Louis (1875-1945), a French writer and poet associated with the Symbolist movement.
The surname SAINTLOUIS has a rich history deeply intertwined with French exploration, colonization, and cultural influences, spanning from the Middle Ages to the modern era.
Demographics
Ancestry and ethnicity for Saintlouis
Among Census respondents with the surname Saintlouis, the largest self-reported group is Black at 92.3%. The next largest groups are White (3.0%) and Hispanic (2.2%).
The bar chart below shows how Saintlouis bearers 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 surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Saintlouis surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American92.3% · 2,032
- White3.0% · 67
- Hispanic or Latino2.2% · 48
- Two or more races2.0% · 44
- Asian and Pacific Islander0.3% · 7
- American Indian and Alaska Native0.1% · 3
Timeline
Historical Census data for Saintlouis
Saintlouis appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#17,896
National surname rank
Recorded bearers 1,562
+744 bearers (+91.0%)
Per 100,000 0.53
Rank movement Up 9,798 places
2020
#13,278
National surname rank
Recorded bearers 2,201
+639 bearers (+40.9%)
Per 100,000 0.74
Rank movement Up 4,618 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #27,694 | 818 | 0.30 | First available Census row | First available Census row |
| 2010 | #17,896 | 1,562 | 0.53 | +744 bearers (+91.0%) | Up 9,798 places |
| 2020 | #13,278 | 2,201 | 0.74 | +639 bearers (+40.9%) | Up 4,618 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Saintlouis surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #17,896 | #13,278 | 25.8% |
| Count | 1,562 | 2,201 | 40.9% |
| Per 100K | 0.53 | 0.74 | 38.9% |
Between the 2010 and 2020 Census, the number of Saintlouis bearers went from 1,562 to 2,201 (+40.9% change). The surname moved up 4,618 positions in the national ranking, going from #17,896 to #13,278.
FAQ
Saintlouis surname: questions and answers
How many people in the U.S. have the surname Saintlouis?
Name Census estimates that about 2,524 living Americans carry the surname Saintlouis. Using the current population baseline, that works out to roughly 1 in 135,798 residents.
How common is Saintlouis?
Saintlouis ranks #13,278 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.74 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,201 people with the surname Saintlouis. That is different from the site's living-bearer estimate (2,524), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.74 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.74 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Saintlouis.
Has Saintlouis become more or less common over time?
Between 2010 and 2020, the surname Saintlouis went from 1,562 recorded bearers to 2,201. That is an increase of 639 (+40.9%). In the national ranking it rose from #17,896 to #13,278.
What does the Census say about the background of Saintlouis?
Among Census respondents with the surname Saintlouis, the largest self-reported group is Black at 92.3%. The next largest groups are White (3.0%) and Hispanic (2.2%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
Black is the largest self-reported group for the surname Saintlouis in the 2020 Census, accounting for 92.3% (2,032 people in the source table).
What is the full ancestry breakdown?
Saintlouis appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (92.3%), White (3.0%), Hispanic (2.2%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Saintlouis (2000, 2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Saintlouis mean?
A locational surname referring to someone from St. Louis, France. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Saintlouis (0.74 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How common is the surname Saintlouis?
For a quick modern take, check how many Americans have the surname Saintlouis on our sister site HowManyOfMe.org.