2000
#143,847
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Guerini
Italian habitational surname derived from a place name meaning "of the warriors."
According to the 2020 US Census Bureau surname tables, roughly 134 Americans carry the last name Guerini. That puts it at #144,270 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,557,868 residents).
This page is the full Name Census profile for the Guerini 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
134
1 in 2,557,868
Census rank
#144,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
117
very rare in the US
Popularity narrative
The Census Bureau recorded 117 bearers of the surname Guerini in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 144270th position in the national surname ranking.
Among Census respondents with the surname Guerini, the largest self-reported group is White at 77.8%. The next largest groups are Hispanic (15.4%) and Two or More Races (3.4%).
Origin
Meaning and origin of Guerini
The surname Guerini originates from Italy, with its roots dating back to the Middle Ages. It is believed to have derived from the Italian word "guerra," meaning "war," suggesting a connection to military or warrior ancestry.
One of the earliest recorded instances of the name Guerini can be found in the historical archives of the city of Ferrara, located in the Emilia-Romagna region of northern Italy. In a document dated 1387, there is a mention of a certain Giovanni Guerini, a respected member of the local nobility.
During the Renaissance period, the Guerini family gained prominence in the city of Brescia, located in the Lombardy region of northern Italy. Historical records indicate that a branch of the family settled in Brescia in the 15th century, establishing themselves as influential merchants and landowners.
In the 16th century, a notable figure bearing the name Guerini was Girolamo Guerini, a renowned painter and architect who was active in the city of Brescia. His artistic contributions can still be seen in various churches and palaces throughout the region.
Another prominent individual with the surname Guerini was Alessandro Guerini, who lived in the 17th century. He was a celebrated mathematician and astronomer, known for his work on celestial mechanics and his contributions to the development of telescopes.
The Guerini name also gained recognition in the realm of literature. In the 18th century, Giuseppe Guerini, a poet and playwright from the city of Verona, gained acclaim for his literary works, particularly his tragedies and comedies inspired by classical Greek and Roman themes.
Moving into the 19th century, the Guerini family continued to make their mark in various fields. One notable figure was Eugenio Guerini, a prominent lawyer and politician who served as a member of the Italian parliament during the latter half of the 19th century, representing the city of Milan.
Throughout history, the surname Guerini has been associated with numerous notable individuals from various walks of life, including artists, scholars, politicians, and entrepreneurs. While the name may have originated from a military or warrior background, it has since become a respected and distinguished surname in Italy and beyond.
Demographics
Ancestry and ethnicity for Guerini
Among Census respondents with the surname Guerini, the largest self-reported group is White at 77.8%. The next largest groups are Hispanic (15.4%) and Two or More Races (3.4%).
The bar chart below shows how Guerini 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 Guerini surname at the time of the 2020 Census, not any inherent property of the name itself.
- White77.8% · 91
- Hispanic or Latino15.4% · 18
- Two or more races3.4% · 4
- Black or African American1.7% · 2
- Asian and Pacific Islander1.7% · 2
Timeline
Historical Census data for Guerini
Guerini 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
#158,432
National surname rank
Recorded bearers 102
-4 bearers (-3.8%)
Per 100,000 0.03
Rank movement Down 14,585 places
2020
#144,270
National surname rank
Recorded bearers 117
+15 bearers (+14.7%)
Per 100,000 0.04
Rank movement Up 14,162 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #143,847 | 106 | 0.04 | First available Census row | First available Census row |
| 2010 | #158,432 | 102 | 0.03 | -4 bearers (-3.8%) | Down 14,585 places |
| 2020 | #144,270 | 117 | 0.04 | +15 bearers (+14.7%) | Up 14,162 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 Guerini 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 | #144,270 | 8.9% |
| Count | 102 | 117 | 14.7% |
| Per 100K | 0.03 | 0.04 | 30.5% |
Between the 2010 and 2020 Census, the number of Guerini bearers went from 102 to 117 (+14.7% change). The surname moved up 14,162 positions in the national ranking, going from #158,432 to #144,270.
FAQ
Guerini surname: questions and answers
How many people in the U.S. have the surname Guerini?
Name Census estimates that about 134 living Americans carry the surname Guerini. Using the current population baseline, that works out to roughly 1 in 2,557,868 residents.
How common is Guerini?
Guerini ranks #144,270 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 117 people with the surname Guerini. That is different from the site's living-bearer estimate (134), 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 Guerini.
Has Guerini become more or less common over time?
Between 2010 and 2020, the surname Guerini went from 102 recorded bearers to 117. That is an increase of 15 (+14.7%). In the national ranking it rose from #158,432 to #144,270.
What does the Census say about the background of Guerini?
Among Census respondents with the surname Guerini, the largest self-reported group is White at 77.8%. The next largest groups are Hispanic (15.4%) and Two or More Races (3.4%). 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 Guerini in the 2020 Census, accounting for 77.8% (91 people in the source table).
What is the full ancestry breakdown?
Guerini appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (77.8%), Hispanic (15.4%), Two or More Races (3.4%). 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 Guerini (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 Guerini mean?
Italian habitational surname derived from a place name meaning "of the warriors." 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 Guerini (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 Guerini?
Our sister site HowManyOfMe.org answers how common the surname Guerini is at a glance, with the living-bearer count up front.