2000
#140,756
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Guererri
An Italian surname possibly derived from the word "guerriero" meaning warrior or soldier.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Guererri. That puts it at #154,182 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,904,698 residents).
This page is the full Name Census profile for the Guererri 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
118
1 in 2,904,698
Census rank
#154,182
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
103
very rare in the US
Popularity narrative
The Census Bureau recorded 103 bearers of the surname Guererri in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154182nd position in the national surname ranking.
Among Census respondents with the surname Guererri, the largest self-reported group is White at 91.3%. The next largest groups are Hispanic (4.9%) and Two or More Races (1.9%).
Origin
Meaning and origin of Guererri
The surname "Guererri" is of Italian origin, with its roots tracing back to the medieval period in the regions of Tuscany and Emilia-Romagna. It is believed to have derived from the Italian word "guerriero," meaning "warrior" or "soldier." This suggests that the earliest bearers of this name may have been individuals involved in military or combat roles during the turbulent times of the Middle Ages.
Historians have uncovered several early references to the name "Guererri" in ancient records and manuscripts. One notable mention can be found in the Florentine archives dating back to the 13th century, where a certain Guido Guererri was listed as a prominent landowner and member of the local nobility. Additionally, the name appears in the Estense Archival Records of Ferrara from the late 14th century, indicating the presence of the Guererri family in that region.
The earliest recorded example of the surname "Guererri" can be traced back to the year 1287, when a certain Giovanni Guererri was documented as a respected merchant and citizen of the city of Siena. Another notable figure bearing this name was Pier Guererri, a skilled architect and sculptor who lived in Florence during the 15th century and contributed to the construction of several iconic Renaissance buildings.
Throughout history, several individuals with the surname "Guererri" have left their mark in various fields. One such notable figure was Domenico Guererri (1564-1624), a renowned Italian painter and fresco artist who was commissioned to decorate numerous churches and palaces in Rome and Tuscany. Another prominent bearer of this name was Giulio Guererri (1692-1768), a celebrated composer and violinist who served as the court musician for the Dukes of Modena.
In the literary realm, the name "Guererri" is associated with Francesco Guererri (1804-1857), an Italian poet and playwright who gained recognition for his romantic works and contributions to the Risorgimento movement. Additionally, Pietro Guererri (1832-1912) was a prominent Italian historian and author, best known for his comprehensive studies on the medieval history of Northern Italy.
It is worth noting that the name "Guererri" has also been found in various historical records with slight variations in spelling, such as "Guerreri," "Guerrieri," or "Guerieri." These variations likely arose due to regional dialectal differences or scribal errors in transcribing the name over the centuries.
Demographics
Ancestry and ethnicity for Guererri
Among Census respondents with the surname Guererri, the largest self-reported group is White at 91.3%. The next largest groups are Hispanic (4.9%) and Two or More Races (1.9%).
The bar chart below shows how Guererri 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 Guererri surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.3% · 94
- Hispanic or Latino4.9% · 5
- Two or more races1.9% · 2
- Black or African American1.0% · 1
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Guererri
Guererri 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
#159,712
National surname rank
Recorded bearers 101
-8 bearers (-7.3%)
Per 100,000 0.03
Rank movement Down 18,956 places
2020
#154,182
National surname rank
Recorded bearers 103
+2 bearers (+2.0%)
Per 100,000 0.03
Rank movement Up 5,530 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #140,756 | 109 | 0.04 | First available Census row | First available Census row |
| 2010 | #159,712 | 101 | 0.03 | -8 bearers (-7.3%) | Down 18,956 places |
| 2020 | #154,182 | 103 | 0.03 | +2 bearers (+2.0%) | Up 5,530 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 Guererri 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 | #159,712 | #154,182 | 3.5% |
| Count | 101 | 103 | 2.0% |
| Per 100K | 0.03 | 0.03 | 14.9% |
Between the 2010 and 2020 Census, the number of Guererri bearers went from 101 to 103 (+2.0% change). The surname moved up 5,530 positions in the national ranking, going from #159,712 to #154,182.
FAQ
Guererri surname: questions and answers
How many people in the U.S. have the surname Guererri?
Name Census estimates that about 118 living Americans carry the surname Guererri. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Guererri?
Guererri ranks #154,182 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 103 people with the surname Guererri. That is different from the site's living-bearer estimate (118), 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 Guererri.
Has Guererri become more or less common over time?
Between 2010 and 2020, the surname Guererri went from 101 recorded bearers to 103. That is an increase of 2 (+2.0%). In the national ranking it rose from #159,712 to #154,182.
What does the Census say about the background of Guererri?
Among Census respondents with the surname Guererri, the largest self-reported group is White at 91.3%. The next largest groups are Hispanic (4.9%) and Two or More Races (1.9%). 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 Guererri in the 2020 Census, accounting for 91.3% (94 people in the source table).
What is the full ancestry breakdown?
Guererri appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.3%), Hispanic (4.9%), Two or More Races (1.9%). 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 Guererri (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 Guererri mean?
An Italian surname possibly derived from the word "guerriero" meaning warrior or soldier. 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 Guererri (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 many people have the last name Guererri?
For a quick modern take, check how many people have the surname Guererri on our sister site HowManyOfMe.org.