2010
#150,452
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Zamagni
Italian surname derived from the name "Zamagna", referring to someone from that region.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Zamagni. 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 Zamagni 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 Zamagni 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 Zamagni, the largest self-reported group is White at 92.2%. The next largest groups are Hispanic (6.8%) and Two or More Races (1.0%).
Origin
Meaning and origin of Zamagni
The surname Zamagni finds its origins in Italy, predominantly in the regions of Emilia-Romagna. The earliest known records of the surname date back to the Medieval period, a time when surnames began to be used for distinguishing individuals and families. The name Zamagni is believed to have been derived from the Latin word "Sapinia," which means "wisdom" or "intelligence." Over time, as languages and dialects evolved, the word transformed phonologically into Zamagni.
One of the earliest references to the Zamagni surname appears in the 13th-century manuscripts from the region of Rimini, a coastal city in Emilia-Romagna. There, a document from 1268 mentions a certain Giovanni Zamagni, a notary, who played a vital role in the local administrative and legal affairs. His prominence in the community set the precedent for successive generations of the Zamagni family who were involved in academia and public service.
In the 15th century, Luigi Zamagni emerged as a notable figure. Born in 1450, Luigi was a renowned scholar and cleric. His works in theological studies and his deep involvement in the Church gained him recognition beyond his locality. Luigi Zamagni's influence extended to various religious debates and councils until his death in 1520. His contributions to religious scholarship were pivotal during the Renaissance, a period of intellectual revival in Europe.
The Zamagni surname further gained prominence in the 18th century through Anna Maria Zamagni, born in 1723. She was one of the few women of her time to be deeply involved in scientific research. Anna Maria was an astronomer whose work on celestial navigation was revolutionary. She was recognized by many European academic institutions and continued her work until her death in 1791.
In the 19th century, Nicola Zamagni, born in 1835, became a celebrated historian and author. Nicola's extensive works on Italian history and medieval manuscripts were significant contributions to the field. His research on the socio-political structure of medieval Rimini is still referenced by historians today. Nicola Zamagni's works were considered groundbreaking and earned him numerous accolades until his passing in 1908.
The turn of the 20th century saw Laura Zamagni, born in 1879, contributing significantly to education reform in Italy. As an educator and reformer, Laura initiated numerous educational programs aimed at improving literacy rates among the rural population. Her dedication to education and her innovative teaching methods left a lasting impact on Italian academic institutions. Laura Zamagni continued her work until her death in 1952.
The surname Zamagni, with its rich history and association with distinguished individuals in various fields such as academia, religion, science, and education, highlights its lineage as one of knowledge and influence. This historical tapestry showcases the evolution of a surname deeply rooted in the intellectual and cultural heritage of Italy.
Demographics
Ancestry and ethnicity for Zamagni
Among Census respondents with the surname Zamagni, the largest self-reported group is White at 92.2%. The next largest groups are Hispanic (6.8%) and Two or More Races (1.0%).
The bar chart below shows how Zamagni 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 Zamagni surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.2% · 95
- Hispanic or Latino6.8% · 7
- Two or more races1.0% · 1
Timeline
Historical Census data for Zamagni
Zamagni 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
#154,182
National surname rank
Recorded bearers 103
-6 bearers (-5.5%)
Per 100,000 0.03
Rank movement Down 3,730 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #150,452 | 109 | 0.04 | First available Census row | First available Census row |
| 2020 | #154,182 | 103 | 0.03 | -6 bearers (-5.5%) | Down 3,730 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 Zamagni 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 | #150,452 | #154,182 | -2.5% |
| Count | 109 | 103 | -5.5% |
| Per 100K | 0.04 | 0.03 | -13.9% |
Between the 2010 and 2020 Census, the number of Zamagni bearers went from 109 to 103 (-5.5% change). The surname moved down 3,730 positions in the national ranking, going from #150,452 to #154,182.
FAQ
Zamagni surname: questions and answers
How many people in the U.S. have the surname Zamagni?
Name Census estimates that about 118 living Americans carry the surname Zamagni. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Zamagni?
Zamagni 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 Zamagni. 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 Zamagni.
Has Zamagni become more or less common over time?
Between 2010 and 2020, the surname Zamagni went from 109 recorded bearers to 103. That is a decrease of 6 (-5.5%). In the national ranking it fell from #150,452 to #154,182.
What does the Census say about the background of Zamagni?
Among Census respondents with the surname Zamagni, the largest self-reported group is White at 92.2%. The next largest groups are Hispanic (6.8%) and Two or More Races (1.0%). 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?
White is the largest self-reported group for the surname Zamagni in the 2020 Census, accounting for 92.2% (95 people in the source table).
What is the full ancestry breakdown?
Zamagni appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.2%), Hispanic (6.8%), Two or More Races (1.0%). 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 Zamagni (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 Zamagni mean?
Italian surname derived from the name "Zamagna", referring to someone from that region. 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 Zamagni (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 Zamagni?
For a quick modern take, check how many Americans have the surname Zamagni on our sister site HowManyOfMe.org.