2010
#140,157
National surname rank
Recorded bearers 119
First available Census row
Per 100,000 0.04
Very Rare Last name
Deollos
A Spanish surname meaning "about the eyes" or "around the eyes".
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Deollos. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Deollos 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
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Deollos in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Deollos, the largest self-reported group is Hispanic at 72.2%. The next largest groups are White (26.9%) and Two or More Races (0.9%).
Origin
Meaning and origin of Deollos
The surname DEOLLOS is believed to have originated in the Basque region of northern Spain and southern France during the medieval period. It is thought to derive from the Basque word "deo", meaning "God", and the suffix "-los", implying ownership or belonging. This suggests that the name may have originally referred to someone who worked for the church or served a religious order.
One of the earliest recorded instances of the name DEOLLOS appears in a 13th-century manuscript from the Monastery of San Millán de la Cogolla in La Rioja, Spain. The document mentions a certain "Pedro Deollos", who was a monk and scribe at the monastery.
In the 14th century, the name DEOLLOS can be found in several tax records and land registries from the Navarre region of northern Spain. One notable individual was Juan Deollos, born around 1320, who was a wealthy landowner and nobleman in the town of Sangüesa.
The DEOLLOS surname also has ties to the Basque Country in France, particularly in the historic province of Labourd. In 1492, a man named Martin Deollos was recorded as a resident of the town of Ustaritz, near the city of Bayonne.
During the 16th century, the name DEOLLOS appeared in various documents from the Kingdom of Navarre, which at the time spanned parts of modern-day Spain and France. One prominent figure was Catalina Deollos, born in 1524, who was a renowned midwife and healer in the city of Pamplona.
Another notable bearer of the DEOLLOS surname was Miguel Deollos, born in 1678 in the Basque town of Lesaka, near the French border. He was a successful merchant and trader who traveled extensively throughout Europe, establishing trade routes and business connections.
Throughout the centuries, the DEOLLOS name has undergone various spelling variations, such as Deolos, Deyollos, and Deyolos, reflecting the linguistic diversity of the Basque region and the influence of neighboring languages like Spanish and French.
Demographics
Ancestry and ethnicity for Deollos
Among Census respondents with the surname Deollos, the largest self-reported group is Hispanic at 72.2%. The next largest groups are White (26.9%) and Two or More Races (0.9%).
The bar chart below shows how Deollos 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 Deollos surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino72.2% · 78
- White26.9% · 29
- Two or more races0.9% · 1
Timeline
Historical Census data for Deollos
Deollos appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#150,935
National surname rank
Recorded bearers 108
-11 bearers (-9.2%)
Per 100,000 0.04
Rank movement Down 10,778 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #140,157 | 119 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,935 | 108 | 0.04 | -11 bearers (-9.2%) | Down 10,778 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 Deollos 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 | #140,157 | #150,935 | -7.7% |
| Count | 119 | 108 | -9.2% |
| Per 100K | 0.04 | 0.04 | -9.7% |
Between the 2010 and 2020 Census, the number of Deollos bearers went from 119 to 108 (-9.2% change). The surname moved down 10,778 positions in the national ranking, going from #140,157 to #150,935.
FAQ
Deollos surname: questions and answers
How many people in the U.S. have the surname Deollos?
Name Census estimates that about 124 living Americans carry the surname Deollos. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Deollos?
Deollos ranks #150,935 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 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 108 people with the surname Deollos. That is different from the site's living-bearer estimate (124), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 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 Deollos.
Has Deollos become more or less common over time?
Between 2010 and 2020, the surname Deollos went from 119 recorded bearers to 108. That is a decrease of 11 (-9.2%). In the national ranking it fell from #140,157 to #150,935.
What does the Census say about the background of Deollos?
Among Census respondents with the surname Deollos, the largest self-reported group is Hispanic at 72.2%. The next largest groups are White (26.9%) and Two or More Races (0.9%). 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?
Hispanic is the largest self-reported group for the surname Deollos in the 2020 Census, accounting for 72.2% (78 people in the source table).
What is the full ancestry breakdown?
Deollos appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (72.2%), White (26.9%), Two or More Races (0.9%). 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 Deollos (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 Deollos mean?
A Spanish surname meaning "about the eyes" or "around the eyes". 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 Deollos (0.04 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 share the surname Deollos?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.