2000
#16,042
National surname rank
Recorded bearers 1,660
First available Census row
Per 100,000 0.62
Rare Last name
Alamillo
A Spanish toponymic surname referring to someone who lived near a poplar grove or in a place called Alamillo.
According to the 2020 US Census Bureau surname tables, roughly 2,410 Americans carry the last name Alamillo. That puts it at #13,778 in the national surname ranking, appearing at a frequency of 0.70 per 100,000 people (about 1 in 142,222 residents).
This page is the full Name Census profile for the Alamillo 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
2.4K
1 in 142,222
Census rank
#13,778
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.1K
rare in the US
Popularity narrative
The Census Bureau recorded 2,102 bearers of the surname Alamillo in its 2020 decennial surname file. At a rate of 0.70 per 100,000 residents, it holds the 13778th position in the national surname ranking.
Among Census respondents with the surname Alamillo, the largest self-reported group is Hispanic at 91.6%. The next largest groups are White (4.8%) and Asian/Pacific Islander (2.2%).
Origin
Meaning and origin of Alamillo
The surname Alamillo is of Spanish origin, and it is believed to have emerged during the Middle Ages, sometime around the 12th or 13th century. The name is thought to be derived from the Spanish word "álamo," which means poplar tree, suggesting that the name may have initially referred to someone who lived near or worked with poplar trees.
One of the earliest recorded instances of the surname Alamillo can be found in the Catastro de Ensenada, a census-like document from 18th-century Spain. This document mentions several individuals with the surname Alamillo living in various regions of Spain, particularly in the provinces of Andalusia and Extremadura.
In terms of historical references, the name Alamillo appears to be associated with several notable figures throughout Spanish history. One such figure is Juan Alamillo, a 16th-century Spanish painter and sculptor who was active in the city of Seville. His works can be found in various churches and museums across Spain.
Another notable individual with the surname Alamillo is María Alamillo, a 17th-century Spanish nun and writer who authored several religious texts and poems. Her works were widely circulated and praised during her lifetime, and she is considered an important figure in the literary and religious circles of her time.
In the 19th century, José Alamillo was a prominent Spanish politician and lawyer who served as a member of the Spanish parliament (Cortes Generales) during the reign of Queen Isabella II. He was known for his advocacy of liberal reforms and his opposition to the monarchy's absolutist policies.
Moving into the 20th century, Pedro Alamillo was a Spanish military officer who played a significant role in the Spanish Civil War (1936-1939). He served as a commander in the Republican forces and was instrumental in several key battles against the Nationalist forces led by General Francisco Franco.
Finally, María Luisa Alamillo García is a contemporary Spanish artist and sculptor who has gained recognition for her large-scale public installations and works that explore themes of identity, memory, and cultural heritage. Her sculptures can be found in various cities across Spain and Europe.
While the surname Alamillo may have originated from a connection to poplar trees or a specific location, it has since become a recognized name across Spain and other Spanish-speaking regions, with a rich history spanning several centuries and encompassing individuals from various walks of life.
Demographics
Ancestry and ethnicity for Alamillo
Among Census respondents with the surname Alamillo, the largest self-reported group is Hispanic at 91.6%. The next largest groups are White (4.8%) and Asian/Pacific Islander (2.2%).
The bar chart below shows how Alamillo 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 Alamillo surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino91.6% · 1,926
- White4.8% · 101
- Asian and Pacific Islander2.2% · 47
- Two or more races0.8% · 16
- Black or African American0.5% · 11
- American Indian and Alaska Native0.0% · 1
Timeline
Historical Census data for Alamillo
Alamillo 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
#13,646
National surname rank
Recorded bearers 2,219
+559 bearers (+33.7%)
Per 100,000 0.75
Rank movement Up 2,396 places
2020
#13,778
National surname rank
Recorded bearers 2,102
-117 bearers (-5.3%)
Per 100,000 0.70
Rank movement Down 132 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #16,042 | 1,660 | 0.62 | First available Census row | First available Census row |
| 2010 | #13,646 | 2,219 | 0.75 | +559 bearers (+33.7%) | Up 2,396 places |
| 2020 | #13,778 | 2,102 | 0.70 | -117 bearers (-5.3%) | Down 132 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 Alamillo 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 | #13,646 | #13,778 | -1.0% |
| Count | 2,219 | 2,102 | -5.3% |
| Per 100K | 0.75 | 0.70 | -6.2% |
Between the 2010 and 2020 Census, the number of Alamillo bearers went from 2,219 to 2,102 (-5.3% change). The surname moved down 132 positions in the national ranking, going from #13,646 to #13,778.
FAQ
Alamillo surname: questions and answers
How many people in the U.S. have the surname Alamillo?
Name Census estimates that about 2,410 living Americans carry the surname Alamillo. Using the current population baseline, that works out to roughly 1 in 142,222 residents.
How common is Alamillo?
Alamillo ranks #13,778 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.70 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,102 people with the surname Alamillo. That is different from the site's living-bearer estimate (2,410), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.7 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.70 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Alamillo.
Has Alamillo become more or less common over time?
Between 2010 and 2020, the surname Alamillo went from 2,219 recorded bearers to 2,102. That is a decrease of 117 (-5.3%). In the national ranking it fell from #13,646 to #13,778.
What does the Census say about the background of Alamillo?
Among Census respondents with the surname Alamillo, the largest self-reported group is Hispanic at 91.6%. The next largest groups are White (4.8%) and Asian/Pacific Islander (2.2%). 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?
Hispanic is the largest self-reported group for the surname Alamillo in the 2020 Census, accounting for 91.6% (1,926 people in the source table).
What is the full ancestry breakdown?
Alamillo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (91.6%), White (4.8%), Asian/Pacific Islander (2.2%). 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 Alamillo (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 Alamillo mean?
A Spanish toponymic surname referring to someone who lived near a poplar grove or in a place called Alamillo. 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 Alamillo (0.70 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 Alamillo?
Our sister site HowManyOfMe.org answers how common the surname Alamillo is at a glance, with the living-bearer count up front.