2010
#158,432
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.03
Very Rare Last name
Sagastegui
Basque surname likely derived from a place name or ancestral home location.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Sagastegui. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Sagastegui 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Sagastegui in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Sagastegui, the largest self-reported group is Hispanic at 78.0%. The next largest groups are White (18.3%) and Two or More Races (1.8%).
Origin
Meaning and origin of Sagastegui
The surname Sagastegui has its origins in the Basque region of northern Spain and southwestern France. It is believed to have emerged during the Middle Ages, likely between the 10th and 13th centuries. The name is derived from the Basque words "saga" (oak tree) and "etxe" (house), suggesting a connection to a dwelling or homestead situated near an oak grove or forest.
One of the earliest known references to the name can be found in a 14th-century census record from the town of Lizarra (now known as Estella) in Navarre, Spain. The document lists a certain Sancho Sagastegui among the residents of the area. This indicates that the name was already established in that region by that time.
In the 15th century, there are records of a Basque nobleman named Juan Sagastegui, who served as a military commander under King John II of Aragon. Juan Sagastegui is noted for his valiant defense of the city of Pamplona against French forces during the Navarrese Civil War (1451-1476).
The name Sagastegui has also been associated with various place names in the Basque Country, such as the village of Sagasteguieta in Navarre, which likely derived its name from the presence of individuals bearing the Sagastegui surname in the area.
One notable figure from the 16th century was Pedro Sagastegui (c. 1520-1589), a Spanish-Basque explorer and navigator who accompanied Juan Rodríguez Cabrillo on his expedition along the Pacific coast of North America, including the exploration of what is now known as the Channel Islands off the coast of California.
In the 18th century, a prominent Basque-Mexican family with the Sagastegui surname established themselves in the region of Jalisco, Mexico. One member, Miguel Sagastegui (1733-1804), became a respected landowner and administrator in the town of Zapopan.
As the Sagastegui name spread beyond its Basque roots, other notable individuals include Martín Sagastegui (1876-1942), a Peruvian politician and diplomat who served as Minister of Foreign Affairs in the early 20th century, and Sebastián Sagastegui (1924-2010), a renowned Argentine painter and sculptor known for his abstract expressionist works.
Demographics
Ancestry and ethnicity for Sagastegui
Among Census respondents with the surname Sagastegui, the largest self-reported group is Hispanic at 78.0%. The next largest groups are White (18.3%) and Two or More Races (1.8%).
The bar chart below shows how Sagastegui 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 Sagastegui surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino78.0% · 85
- White18.3% · 20
- Two or more races1.8% · 2
- Black or African American0.9% · 1
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Sagastegui
Sagastegui 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
#150,205
National surname rank
Recorded bearers 109
+7 bearers (+6.9%)
Per 100,000 0.04
Rank movement Up 8,227 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #158,432 | 102 | 0.03 | First available Census row | First available Census row |
| 2020 | #150,205 | 109 | 0.04 | +7 bearers (+6.9%) | Up 8,227 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 Sagastegui 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 | #158,432 | #150,205 | 5.2% |
| Count | 102 | 109 | 6.9% |
| Per 100K | 0.03 | 0.04 | 21.6% |
Between the 2010 and 2020 Census, the number of Sagastegui bearers went from 102 to 109 (+6.9% change). The surname moved up 8,227 positions in the national ranking, going from #158,432 to #150,205.
FAQ
Sagastegui surname: questions and answers
How many people in the U.S. have the surname Sagastegui?
Name Census estimates that about 125 living Americans carry the surname Sagastegui. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Sagastegui?
Sagastegui ranks #150,205 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 109 people with the surname Sagastegui. That is different from the site's living-bearer estimate (125), 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 Sagastegui.
Has Sagastegui become more or less common over time?
Between 2010 and 2020, the surname Sagastegui went from 102 recorded bearers to 109. That is an increase of 7 (+6.9%). In the national ranking it rose from #158,432 to #150,205.
What does the Census say about the background of Sagastegui?
Among Census respondents with the surname Sagastegui, the largest self-reported group is Hispanic at 78.0%. The next largest groups are White (18.3%) and Two or More Races (1.8%). 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 Sagastegui in the 2020 Census, accounting for 78.0% (85 people in the source table).
What is the full ancestry breakdown?
Sagastegui appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (78.0%), White (18.3%), Two or More Races (1.8%). 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 Sagastegui (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 Sagastegui mean?
Basque surname likely derived from a place name or ancestral home 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 Sagastegui (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 have the last name Sagastegui?
Our sister site HowManyOfMe.org answers how many people have the last name Sagastegui at a glance, with the living-bearer count up front.