2010
#159,712
National surname rank
Recorded bearers 101
First available Census row
Per 100,000 0.03
Very Rare Last name
Ascarrunz
A Basque surname meaning "the ravine" or "the gorge".
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Ascarrunz. That puts it at #154,182 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,904,698 residents).
This page is the full Name Census profile for the Ascarrunz 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
118
1 in 2,904,698
Census rank
#154,182
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
103
very rare in the US
Popularity narrative
The Census Bureau recorded 103 bearers of the surname Ascarrunz in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154182nd position in the national surname ranking.
Among Census respondents with the surname Ascarrunz, the largest self-reported group is Hispanic at 82.5%. The next largest groups are White (11.7%) and Asian/Pacific Islander (1.9%).
Origin
Meaning and origin of Ascarrunz
The surname ASCARRUNZ has its origins in the Basque region of Spain, dating back to the 16th century. It is believed to have been derived from the Basque words "azkarra" meaning "swift" and "untz" meaning "wave," possibly referring to someone who lived near a swift-moving river or coastal area.
One of the earliest recorded mentions of the ASCARRUNZ name can be found in a 1598 document from the town of Bilbao, where a certain Juan ASCARRUNZ was listed as a merchant. The name also appears in several 17th-century parish records from the nearby villages of Bermeo and Plentzia.
In the mid-18th century, a prominent figure named Ignacio ASCARRUNZ (1723-1795) was a renowned shipbuilder in the port city of San Sebastián. His descendants continued the family's maritime traditions, with several ASCARRUNZ men serving as captains and navigators in the Spanish Armada.
During the 19th century, the ASCARRUNZ name began to spread beyond the Basque Country, with some members of the family emigrating to other parts of Spain and the Americas. One notable figure was Pedro ASCARRUNZ (1845-1912), a poet and journalist who settled in Havana, Cuba, and became a prominent voice in the Cuban independence movement.
Another noteworthy individual was María ASCARRUNZ (1876-1948), a pioneering feminist and educator from Bilbao, who fought for women's rights and established several schools for girls in the Basque region.
In the 20th century, the ASCARRUNZ name continued to be associated with various professions and achievements. For instance, Javier ASCARRUNZ (1921-2003) was a renowned architect who designed several iconic buildings in Madrid and Barcelona, while Lucía ASCARRUNZ (1937-2018) was a celebrated author who wrote several novels exploring Basque culture and traditions.
Throughout its history, the ASCARRUNZ surname has maintained a strong connection to its Basque roots, with many bearers of the name proudly embracing their cultural heritage and contributing to various fields, including maritime endeavors, literature, education, and architecture.
Demographics
Ancestry and ethnicity for Ascarrunz
Among Census respondents with the surname Ascarrunz, the largest self-reported group is Hispanic at 82.5%. The next largest groups are White (11.7%) and Asian/Pacific Islander (1.9%).
The bar chart below shows how Ascarrunz 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 Ascarrunz surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino82.5% · 85
- White11.7% · 12
- Asian and Pacific Islander1.9% · 2
- American Indian and Alaska Native1.9% · 2
- Two or more races1.9% · 2
Timeline
Historical Census data for Ascarrunz
Ascarrunz 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
#154,182
National surname rank
Recorded bearers 103
+2 bearers (+2.0%)
Per 100,000 0.03
Rank movement Up 5,530 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #159,712 | 101 | 0.03 | First available Census row | First available Census row |
| 2020 | #154,182 | 103 | 0.03 | +2 bearers (+2.0%) | Up 5,530 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 Ascarrunz 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 | #154,182 | 3.5% |
| Count | 101 | 103 | 2.0% |
| Per 100K | 0.03 | 0.03 | 14.9% |
Between the 2010 and 2020 Census, the number of Ascarrunz bearers went from 101 to 103 (+2.0% change). The surname moved up 5,530 positions in the national ranking, going from #159,712 to #154,182.
FAQ
Ascarrunz surname: questions and answers
How many people in the U.S. have the surname Ascarrunz?
Name Census estimates that about 118 living Americans carry the surname Ascarrunz. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Ascarrunz?
Ascarrunz ranks #154,182 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 103 people with the surname Ascarrunz. That is different from the site's living-bearer estimate (118), 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 Ascarrunz.
Has Ascarrunz become more or less common over time?
Between 2010 and 2020, the surname Ascarrunz went from 101 recorded bearers to 103. That is an increase of 2 (+2.0%). In the national ranking it rose from #159,712 to #154,182.
What does the Census say about the background of Ascarrunz?
Among Census respondents with the surname Ascarrunz, the largest self-reported group is Hispanic at 82.5%. The next largest groups are White (11.7%) and Asian/Pacific Islander (1.9%). 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 Ascarrunz in the 2020 Census, accounting for 82.5% (85 people in the source table).
What is the full ancestry breakdown?
Ascarrunz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (82.5%), White (11.7%), Asian/Pacific Islander (1.9%). 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 Ascarrunz (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 Ascarrunz mean?
A Basque surname meaning "the ravine" or "the gorge". 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 Ascarrunz (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 Ascarrunz?
Find out how many people have the last name Ascarrunz on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.