2010
#138,304
National surname rank
Recorded bearers 121
First available Census row
Per 100,000 0.04
Very Rare Last name
Delassalas
A Catalan surname likely derived from a place name or location.
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Delassalas. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Delassalas 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
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Delassalas in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Delassalas, the largest self-reported group is Hispanic at 92.2%. The next largest groups are White (5.2%) and Asian/Pacific Islander (0.9%).
Origin
Meaning and origin of Delassalas
The surname DELASSALAS has its origins in Spain, dating back to the 16th century. It is believed to have derived from the Spanish phrase "de las salas," which translates to "of the halls" or "of the salons." This suggests that the name may have been initially associated with individuals who resided or worked in grand halls or manor houses.
One of the earliest known references to the name DELASSALAS can be found in the archives of the city of Seville, where a record from 1582 mentions a certain Juan DELASSALAS, a prominent landowner and merchant. Another early mention is found in the baptismal records of the Church of Santa Maria la Blanca in Seville, where a child named María DELASSALAS was baptized in 1596.
During the 17th century, the DELASSALAS name appeared to have spread throughout the regions of Andalusia and Extremadura in southern Spain. In the town of Jerez de la Frontera, a family of noble lineage bearing the name DELASSALAS is recorded as having owned a significant estate and vineyards.
As Spain's influence expanded through its colonial territories, the DELASSALAS surname also found its way to the Americas. One notable individual was Diego DELASSALAS, a Spanish explorer and navigator who accompanied Hernán Cortés on his expedition to conquer Mexico in the early 16th century. Diego DELASSALAS is credited with mapping several regions along the Gulf of Mexico and the Caribbean coast.
In the 18th century, a branch of the DELASSALAS family settled in the Spanish colonial city of Havana, Cuba. Among them was Tomás DELASSALAS (1725-1798), a wealthy merchant and landowner who played a significant role in the city's economic and political affairs during that period.
Another prominent figure with the DELASSALAS surname was María Dolores DELASSALAS (1792-1867), a Spanish poet and writer who gained recognition for her romantic poetry and her contributions to the literary salons of Madrid during the early 19th century.
Throughout its history, the DELASSALAS surname has been associated with individuals from various walks of life, including nobility, merchants, explorers, and artists. While the name's origins can be traced back to Spain, it has since spread to other parts of the world, reflecting the diverse journeys and histories of those who have carried this distinctive surname.
Demographics
Ancestry and ethnicity for Delassalas
Among Census respondents with the surname Delassalas, the largest self-reported group is Hispanic at 92.2%. The next largest groups are White (5.2%) and Asian/Pacific Islander (0.9%).
The bar chart below shows how Delassalas 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 Delassalas surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino92.2% · 107
- White5.2% · 6
- Asian and Pacific Islander0.9% · 1
- American Indian and Alaska Native0.9% · 1
- Two or more races0.9% · 1
Timeline
Historical Census data for Delassalas
Delassalas 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
#145,028
National surname rank
Recorded bearers 116
-5 bearers (-4.1%)
Per 100,000 0.04
Rank movement Down 6,724 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #138,304 | 121 | 0.04 | First available Census row | First available Census row |
| 2020 | #145,028 | 116 | 0.04 | -5 bearers (-4.1%) | Down 6,724 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 Delassalas 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 | #138,304 | #145,028 | -4.9% |
| Count | 121 | 116 | -4.1% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Delassalas bearers went from 121 to 116 (-4.1% change). The surname moved down 6,724 positions in the national ranking, going from #138,304 to #145,028.
FAQ
Delassalas surname: questions and answers
How many people in the U.S. have the surname Delassalas?
Name Census estimates that about 133 living Americans carry the surname Delassalas. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Delassalas?
Delassalas ranks #145,028 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 116 people with the surname Delassalas. That is different from the site's living-bearer estimate (133), 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 Delassalas.
Has Delassalas become more or less common over time?
Between 2010 and 2020, the surname Delassalas went from 121 recorded bearers to 116. That is a decrease of 5 (-4.1%). In the national ranking it fell from #138,304 to #145,028.
What does the Census say about the background of Delassalas?
Among Census respondents with the surname Delassalas, the largest self-reported group is Hispanic at 92.2%. The next largest groups are White (5.2%) and Asian/Pacific Islander (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 Delassalas in the 2020 Census, accounting for 92.2% (107 people in the source table).
What is the full ancestry breakdown?
Delassalas appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (92.2%), White (5.2%), Asian/Pacific Islander (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 Delassalas (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 Delassalas mean?
A Catalan surname likely derived from a place name or location. 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 Delassalas (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 common is the surname Delassalas?
If you just want to know how many people have the surname Delassalas, HowManyOfMe.org gives you the headline number in one glance.