2010
#147,253
National surname rank
Recorded bearers 112
First available Census row
Per 100,000 0.04
Very Rare Last name
Lambro
A surname originating from the Italian nickname "l'ambro" meaning "the amber" or "the blond".
According to the 2020 US Census Bureau surname tables, roughly 128 Americans carry the last name Lambro. That puts it at #147,954 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,677,768 residents).
This page is the full Name Census profile for the Lambro 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
128
1 in 2,677,768
Census rank
#147,954
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
112
very rare in the US
Popularity narrative
The Census Bureau recorded 112 bearers of the surname Lambro in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147954th position in the national surname ranking.
Among Census respondents with the surname Lambro, the largest self-reported group is White at 93.8%. The next largest groups are Hispanic (6.3%).
Origin
Meaning and origin of Lambro
The surname "LAMBRO" is believed to have originated in Italy, specifically in the region of Lombardy. It is derived from the Latin word "Lambrus," which was the name of a river in ancient times. This river is now known as the Lambro River, flowing through the provinces of Milan and Monza.
One of the earliest recorded instances of the name "LAMBRO" can be found in a document from the 11th century, where it was spelled "Lambro." This document was a land grant issued by the Archbishop of Milan, indicating that the name was already in use during that period in the region.
In the 13th century, a notable figure named Guido Lambro was a prominent scholar and philosopher from Milan. He is known for his contributions to the study of logic and his writings on Aristotelian philosophy.
During the Renaissance period, the Lambro family gained prominence in the city of Milan. Andrea Lambro (1470-1537) was a renowned painter and architect who worked on several important projects, including the design of the Church of Santa Maria delle Grazie, which houses Leonardo da Vinci's famous fresco, "The Last Supper."
In the 17th century, the Lambro surname was associated with the Venetian Republic. Giuseppe Lambro (1602-1671) was a Venetian admiral and statesman who played a significant role in the defense of Venice against the Ottoman Empire.
Another noteworthy figure with the surname "LAMBRO" was Pietro Lambro (1778-1842), an Italian poet and writer from Lombardy. He was known for his patriotic works and his contributions to the literary movement of the Risorgimento, which aimed to unify Italy.
In the 19th century, the Lambro surname was found in various parts of Italy, including Sicily. Francesco Lambro (1825-1892) was a Sicilian politician and journalist who advocated for the independence of Sicily from the Kingdom of Italy.
As the name "LAMBRO" originated from a specific geographic location, it is likely that many individuals with this surname can trace their ancestry back to the Lombardy region of Italy, where the name has its roots.
Demographics
Ancestry and ethnicity for Lambro
Among Census respondents with the surname Lambro, the largest self-reported group is White at 93.8%. The next largest groups are Hispanic (6.3%).
The bar chart below shows how Lambro 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 Lambro surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.8% · 105
- Hispanic or Latino6.3% · 7
Timeline
Historical Census data for Lambro
Lambro 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
#147,954
National surname rank
Recorded bearers 112
+0 bearers (+0.0%)
Per 100,000 0.04
Rank movement Down 701 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #147,253 | 112 | 0.04 | First available Census row | First available Census row |
| 2020 | #147,954 | 112 | 0.04 | +0 bearers (+0.0%) | Down 701 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 Lambro 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 | #147,253 | #147,954 | -0.5% |
| Count | 112 | 112 | 0.0% |
| Per 100K | 0.04 | 0.04 | -6.3% |
Between the 2010 and 2020 Census, the number of Lambro bearers went from 112 to 112 (+0.0% change). The surname moved down 701 positions in the national ranking, going from #147,253 to #147,954.
FAQ
Lambro surname: questions and answers
How many people in the U.S. have the surname Lambro?
Name Census estimates that about 128 living Americans carry the surname Lambro. Using the current population baseline, that works out to roughly 1 in 2,677,768 residents.
How common is Lambro?
Lambro ranks #147,954 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 112 people with the surname Lambro. That is different from the site's living-bearer estimate (128), 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 Lambro.
Has Lambro become more or less common over time?
Between 2010 and 2020, the surname Lambro went from 112 recorded bearers to 112. That is an increase of 0 (+0.0%). In the national ranking it fell from #147,253 to #147,954.
What does the Census say about the background of Lambro?
Among Census respondents with the surname Lambro, the largest self-reported group is White at 93.8%. The next largest groups are Hispanic (6.3%). 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?
White is the largest self-reported group for the surname Lambro in the 2020 Census, accounting for 93.8% (105 people in the source table).
What is the full ancestry breakdown?
Lambro appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.8%), Hispanic (6.3%). 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 Lambro (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 Lambro mean?
A surname originating from the Italian nickname "l'ambro" meaning "the amber" or "the blond". 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 Lambro (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 Lambro?
Our sister site HowManyOfMe.org answers how many people are called Lambro at a glance, with the living-bearer count up front.