2010
#156,044
National surname rank
Recorded bearers 104
First available Census row
Per 100,000 0.04
Very Rare Last name
Lagrosa
A Spanish surname derived from the Spanish phrase "la grosa", meaning "the thick" or "the coarse".
According to the 2020 US Census Bureau surname tables, roughly 115 Americans carry the last name Lagrosa. That puts it at #155,682 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,980,473 residents).
This page is the full Name Census profile for the Lagrosa 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
115
1 in 2,980,473
Census rank
#155,682
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
100
very rare in the US
Popularity narrative
The Census Bureau recorded 100 bearers of the surname Lagrosa in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155682nd position in the national surname ranking.
Among Census respondents with the surname Lagrosa, the largest self-reported group is Asian/Pacific Islander at 74.0%. The next largest groups are White (21.0%) and Hispanic (3.0%).
Origin
Meaning and origin of Lagrosa
The surname LAGROSA is believed to have originated in Spain, likely during the medieval period. The name is thought to be derived from the Spanish word "rosa," meaning rose, with the prefix "la" indicating "the." This suggests that LAGROSA may have referred to someone associated with roses, perhaps a rose cultivator or someone who lived near a rosebush or garden.
One of the earliest recorded instances of the LAGROSA name can be found in the archives of the Kingdom of Aragon, dating back to the 13th century. In a document from 1278, a certain Pedro LAGROSA is mentioned as a landowner in the region of Catalonia. This suggests that the name had already established itself in northeastern Spain by that time.
During the 15th century, the LAGROSA name appears in several historical records from the city of Valencia, indicating that the family had spread to the eastern coast of Spain. Notable individuals from this period include Juana LAGROSA, a renowned embroiderer who worked for the court of King Ferdinand II of Aragon in the late 1400s.
As Spain expanded its influence in the Americas during the 16th and 17th centuries, the LAGROSA name began to appear in colonial records from various regions of the Spanish Empire. One prominent figure was Diego LAGROSA, a conquistador who participated in the conquest of Peru under Francisco Pizarro in the 1530s.
In the 18th century, the LAGROSA name gained prominence in the arts and literature. Antonio LAGROSA, born in 1705 in Seville, was a celebrated painter known for his religious works and portraits. His contemporary, Francisca LAGROSA (1718-1792), was a renowned poet and playwright from Madrid, whose works were performed in various theaters across Spain.
As the LAGROSA name spread throughout Spain and its colonies, it also underwent variations in spelling and pronunciation. In some regions, it was spelled as "LAGROZA" or "LAGROZA," while in others, it was pronounced with a more guttural "R" sound, resembling "LAGROSA."
Other notable individuals with the LAGROSA surname include Emilio LAGROSA (1842-1910), a prominent architect from Barcelona who designed several iconic buildings in the city, and María LAGROSA (1875-1958), a renowned educator and advocate for women's rights who founded several schools in Madrid.
Demographics
Ancestry and ethnicity for Lagrosa
Among Census respondents with the surname Lagrosa, the largest self-reported group is Asian/Pacific Islander at 74.0%. The next largest groups are White (21.0%) and Hispanic (3.0%).
The bar chart below shows how Lagrosa 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 Lagrosa surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander74.0% · 74
- White21.0% · 21
- Hispanic or Latino3.0% · 3
- Two or more races2.0% · 2
Timeline
Historical Census data for Lagrosa
Lagrosa 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
#155,682
National surname rank
Recorded bearers 100
-4 bearers (-3.8%)
Per 100,000 0.03
Rank movement Up 362 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #156,044 | 104 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,682 | 100 | 0.03 | -4 bearers (-3.8%) | Up 362 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 Lagrosa 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 | #156,044 | #155,682 | 0.2% |
| Count | 104 | 100 | -3.8% |
| Per 100K | 0.04 | 0.03 | -16.4% |
Between the 2010 and 2020 Census, the number of Lagrosa bearers went from 104 to 100 (-3.8% change). The surname moved up 362 positions in the national ranking, going from #156,044 to #155,682.
FAQ
Lagrosa surname: questions and answers
How many people in the U.S. have the surname Lagrosa?
Name Census estimates that about 115 living Americans carry the surname Lagrosa. Using the current population baseline, that works out to roughly 1 in 2,980,473 residents.
How common is Lagrosa?
Lagrosa ranks #155,682 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 100 people with the surname Lagrosa. That is different from the site's living-bearer estimate (115), 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 Lagrosa.
Has Lagrosa become more or less common over time?
Between 2010 and 2020, the surname Lagrosa went from 104 recorded bearers to 100. That is a decrease of 4 (-3.8%). In the national ranking it rose from #156,044 to #155,682.
What does the Census say about the background of Lagrosa?
Among Census respondents with the surname Lagrosa, the largest self-reported group is Asian/Pacific Islander at 74.0%. The next largest groups are White (21.0%) and Hispanic (3.0%). 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?
Asian/Pacific Islander is the largest self-reported group for the surname Lagrosa in the 2020 Census, accounting for 74.0% (74 people in the source table).
What is the full ancestry breakdown?
Lagrosa appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (74.0%), White (21.0%), Hispanic (3.0%). 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 Lagrosa (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 Lagrosa mean?
A Spanish surname derived from the Spanish phrase "la grosa", meaning "the thick" or "the coarse". 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 Lagrosa (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 common is the surname Lagrosa?
You can see how many Americans have the surname Lagrosa on our sister site HowManyOfMe.org — same data roots, lighter UI.