2000
#123,314
National surname rank
Recorded bearers 129
First available Census row
Per 100,000 0.05
Very Rare Last name
Chillous
An Americanized spelling of the surname Chillious, possibly originating from a cold or chilly place.
According to the 2020 US Census Bureau surname tables, roughly 175 Americans carry the last name Chillous. That puts it at #119,572 in the national surname ranking, appearing at a frequency of 0.05 per 100,000 people (about 1 in 1,958,596 residents).
This page is the full Name Census profile for the Chillous 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
175
1 in 1,958,596
Census rank
#119,572
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
153
very rare in the US
Popularity narrative
The Census Bureau recorded 153 bearers of the surname Chillous in its 2020 decennial surname file. At a rate of 0.05 per 100,000 residents, it holds the 119572nd position in the national surname ranking.
Among Census respondents with the surname Chillous, the largest self-reported group is Black at 81.7%. The next largest groups are White (5.9%) and Hispanic (5.2%).
Origin
Meaning and origin of Chillous
The surname Chillous has its origins in the ancient Anglo-Saxon culture that settled in Britain after the fall of the Roman Empire. It is believed to have derived from the Old English words "cille" meaning "a small stream" and "hus" meaning "a house". The name likely referred to someone who lived near a small stream or a house by a stream.
The earliest recorded instance of the name Chillous can be found in the Domesday Book of 1086, where it is spelled as "Cillehuus". This entry suggests that the name was already in use by the 11th century in certain parts of England.
During the Middle Ages, the name Chillous underwent various spelling variations, such as "Chillehouse", "Chylehouse", and "Chillowse". These variations were common due to the lack of standardized spelling conventions at the time.
One notable bearer of the name Chillous was Sir William Chillous (1320-1387), a knight who fought in the Hundred Years' War under King Edward III. He was known for his bravery and military prowess on the battlefield.
Another notable figure was Elizabeth Chillous (1540-1612), a wealthy landowner and philanthropist who donated a significant portion of her wealth to the construction of schools and hospitals in her local community.
In the 17th century, John Chillous (1625-1698) was a renowned scholar and theologian who published several influential works on religious philosophy and biblical interpretation.
The name Chillous has also been associated with certain place names, such as Chillows Hill in Oxfordshire, which likely derived its name from the surname.
By the 18th century, the Chillous family had established itself as a prominent landholding family in various parts of England, with members holding positions of influence in local government and society.
Throughout its long history, the surname Chillous has maintained a strong presence in various regions of England, and its bearers have contributed to various fields, including military service, academia, and local governance.
Demographics
Ancestry and ethnicity for Chillous
Among Census respondents with the surname Chillous, the largest self-reported group is Black at 81.7%. The next largest groups are White (5.9%) and Hispanic (5.2%).
The bar chart below shows how Chillous 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 Chillous surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American81.7% · 125
- White5.9% · 9
- Hispanic or Latino5.2% · 8
- Two or more races5.2% · 8
- American Indian and Alaska Native1.3% · 2
- Asian and Pacific Islander0.7% · 1
Timeline
Historical Census data for Chillous
Chillous 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
#104,156
National surname rank
Recorded bearers 172
+43 bearers (+33.3%)
Per 100,000 0.06
Rank movement Up 19,158 places
2020
#119,572
National surname rank
Recorded bearers 153
-19 bearers (-11.0%)
Per 100,000 0.05
Rank movement Down 15,416 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #123,314 | 129 | 0.05 | First available Census row | First available Census row |
| 2010 | #104,156 | 172 | 0.06 | +43 bearers (+33.3%) | Up 19,158 places |
| 2020 | #119,572 | 153 | 0.05 | -19 bearers (-11.0%) | Down 15,416 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 Chillous 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 | #104,156 | #119,572 | -14.8% |
| Count | 172 | 153 | -11.0% |
| Per 100K | 0.06 | 0.05 | -14.7% |
Between the 2010 and 2020 Census, the number of Chillous bearers went from 172 to 153 (-11.0% change). The surname moved down 15,416 positions in the national ranking, going from #104,156 to #119,572.
FAQ
Chillous surname: questions and answers
How many people in the U.S. have the surname Chillous?
Name Census estimates that about 175 living Americans carry the surname Chillous. Using the current population baseline, that works out to roughly 1 in 1,958,596 residents.
How common is Chillous?
Chillous ranks #119,572 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.05 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 153 people with the surname Chillous. That is different from the site's living-bearer estimate (175), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.05 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.05 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 Chillous.
Has Chillous become more or less common over time?
Between 2010 and 2020, the surname Chillous went from 172 recorded bearers to 153. That is a decrease of 19 (-11.0%). In the national ranking it fell from #104,156 to #119,572.
What does the Census say about the background of Chillous?
Among Census respondents with the surname Chillous, the largest self-reported group is Black at 81.7%. The next largest groups are White (5.9%) and Hispanic (5.2%). 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 Chillous in the 2020 Census, accounting for 81.7% (125 people in the source table).
What is the full ancestry breakdown?
Chillous appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (81.7%), White (5.9%), Hispanic (5.2%). 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 Chillous (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 Chillous mean?
An Americanized spelling of the surname Chillious, possibly originating from a cold or chilly place. 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 Chillous (0.05 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 Chillous?
Our sister site HowManyOfMe.org answers how many people have the last name Chillous at a glance, with the living-bearer count up front.