2000
#139,757
National surname rank
Recorded bearers 110
First available Census row
Per 100,000 0.04
Very Rare Last name
Roumillat
Derived from the French regional term for "bramble" or "thorny plant".
According to the 2020 US Census Bureau surname tables, roughly 119 Americans carry the last name Roumillat. That puts it at #153,590 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,880,289 residents).
This page is the full Name Census profile for the Roumillat 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
119
1 in 2,880,289
Census rank
#153,590
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
104
very rare in the US
Popularity narrative
The Census Bureau recorded 104 bearers of the surname Roumillat in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 153590th position in the national surname ranking.
Among Census respondents with the surname Roumillat, the largest self-reported group is White at 89.4%. The next largest groups are Hispanic (4.8%) and Black (2.9%).
Origin
Meaning and origin of Roumillat
The surname ROUMILLAT is of French origin, originating in the Provence-Alpes-Côte d'Azur region of southeastern France. It likely dates back to the 13th or 14th century. The name is derived from the Old Provençal word "roumilhat," which means "small stream" or "rivulet."
This surname may have been originally given to someone who lived near a small stream or brook. It could also have been an occupational name for someone who worked near or maintained a small waterway. The earliest recorded spelling variations include Roumilhat, Roumelhat, and Roumillat.
One of the earliest known references to this surname is found in a 1389 census record from the town of Arles, which lists a "Pierre Roumilhat" as a resident. Another early record is from a 1412 tax roll in Marseille, mentioning a "Jehan Roumellat."
In the 16th century, a notable bearer of this name was Jacques Roumillat (c. 1520-1582), a French lawyer and judge from Aix-en-Provence. He served as a magistrate in the Parlement of Provence.
During the 17th century, the name appears in records from the village of Châteaurenard, near Avignon. A local landowner named Antoine Roumillat (c. 1635-1698) is mentioned in several deeds and contracts from this period.
In the 18th century, a French soldier named Pierre Roumillat (1729-1805) fought in the Seven Years' War and later served as a captain in the French Revolutionary Wars. He was awarded the Légion d'Honneur for his military service.
Another notable bearer of this surname was the 19th-century French botanist and horticulturist, Joseph Roumillat (1817-1892). He specialized in the cultivation of roses and published several works on the subject, including "Traité pratique de la culture des roses" (1865).
Demographics
Ancestry and ethnicity for Roumillat
Among Census respondents with the surname Roumillat, the largest self-reported group is White at 89.4%. The next largest groups are Hispanic (4.8%) and Black (2.9%).
The bar chart below shows how Roumillat 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 Roumillat surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.4% · 93
- Hispanic or Latino4.8% · 5
- Black or African American2.9% · 3
- Two or more races2.9% · 3
Timeline
Historical Census data for Roumillat
Roumillat 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
#159,712
National surname rank
Recorded bearers 101
-9 bearers (-8.2%)
Per 100,000 0.03
Rank movement Down 19,955 places
2020
#153,590
National surname rank
Recorded bearers 104
+3 bearers (+3.0%)
Per 100,000 0.03
Rank movement Up 6,122 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #139,757 | 110 | 0.04 | First available Census row | First available Census row |
| 2010 | #159,712 | 101 | 0.03 | -9 bearers (-8.2%) | Down 19,955 places |
| 2020 | #153,590 | 104 | 0.03 | +3 bearers (+3.0%) | Up 6,122 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 Roumillat 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 | #159,712 | #153,590 | 3.8% |
| Count | 101 | 104 | 3.0% |
| Per 100K | 0.03 | 0.03 | 16.0% |
Between the 2010 and 2020 Census, the number of Roumillat bearers went from 101 to 104 (+3.0% change). The surname moved up 6,122 positions in the national ranking, going from #159,712 to #153,590.
FAQ
Roumillat surname: questions and answers
How many people in the U.S. have the surname Roumillat?
Name Census estimates that about 119 living Americans carry the surname Roumillat. Using the current population baseline, that works out to roughly 1 in 2,880,289 residents.
How common is Roumillat?
Roumillat ranks #153,590 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 104 people with the surname Roumillat. That is different from the site's living-bearer estimate (119), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Roumillat.
Has Roumillat become more or less common over time?
Between 2010 and 2020, the surname Roumillat went from 101 recorded bearers to 104. That is an increase of 3 (+3.0%). In the national ranking it rose from #159,712 to #153,590.
What does the Census say about the background of Roumillat?
Among Census respondents with the surname Roumillat, the largest self-reported group is White at 89.4%. The next largest groups are Hispanic (4.8%) and Black (2.9%). 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?
White is the largest self-reported group for the surname Roumillat in the 2020 Census, accounting for 89.4% (93 people in the source table).
What is the full ancestry breakdown?
Roumillat appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.4%), Hispanic (4.8%), Black (2.9%). 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 Roumillat (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 Roumillat mean?
Derived from the French regional term for "bramble" or "thorny plant". 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 Roumillat (0.03 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 many people have the last name Roumillat?
See how many Americans have the surname Roumillat on HowManyOfMe.org, our sister site built around that single question.