2010
#146,201
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Masonis
A surname derived from the Latin word for a mason or stonemason.
According to the 2020 US Census Bureau surname tables, roughly 119 Americans carry the last name Masonis. That puts it at #153,590 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,880,289 residents).
This page is the full Name Census profile for the Masonis 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
119
1 in 2,880,289
Census rank
#153,590
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
104
very rare in the US
Popularity narrative
The Census Bureau recorded 104 bearers of the surname Masonis in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 153590th position in the national surname ranking.
Among Census respondents with the surname Masonis, the largest self-reported group is White at 89.4%. The next largest groups are Two or More Races (3.8%) and Black (2.9%).
Origin
Meaning and origin of Masonis
The surname Masonis is believed to have originated in Italy during the medieval period. Its roots can be traced back to the Latin word "masonus," which referred to a skilled stonemason or builder of stone structures. This occupation was highly valued and respected during the era of cathedral and castle construction across Europe.
The earliest known references to the Masonis name can be found in historical records from the Italian regions of Tuscany and Umbria, dating back to the 13th and 14th centuries. The name was often associated with families and individuals involved in the construction of notable buildings and architectural marvels of that time.
One of the earliest documented individuals with the Masonis surname was Giovanni Masonis, a master stonemason who was commissioned to work on the construction of the iconic Basilica of St. Francis of Assisi in Umbria during the late 13th century. His exceptional craftsmanship and attention to detail contributed significantly to the beautiful Gothic architecture of this renowned church.
In the 15th century, the Masonis name gained further prominence with the rise of the influential Masonis family in Florence. This family was renowned for their contributions to the city's architectural heritage, with several members serving as skilled masons and builders. Notably, Piero Masonis (1425-1490) was a renowned architect and sculptor who played a pivotal role in the design and construction of the famous Palazzo Pitti.
Another notable figure in the history of the Masonis surname was Girolamo Masonis (1520-1587), a renowned architect and military engineer from Verona. He was commissioned by the Venetian Republic to fortify several cities and design defensive structures, showcasing his expertise in both architectural design and military engineering.
As the Masonis name spread across Italy and beyond, various variations in spelling emerged, such as Masone, Masonni, and Masonetti. These variations were often influenced by regional dialects and linguistic traditions, but all shared the common connection to the stonemason trade and the art of building with stone.
While the Masonis surname initially gained prominence in Italy, it eventually spread to other parts of Europe and beyond through migration and the dissemination of skilled craftsmen. Today, individuals bearing this surname can be found in various countries, carrying on the legacy of their ancestors' contributions to the art of stonemasonry and architectural design.
Demographics
Ancestry and ethnicity for Masonis
Among Census respondents with the surname Masonis, the largest self-reported group is White at 89.4%. The next largest groups are Two or More Races (3.8%) and Black (2.9%).
The bar chart below shows how Masonis 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 Masonis surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.4% · 93
- Two or more races3.8% · 4
- Black or African American2.9% · 3
- Hispanic or Latino2.9% · 3
- American Indian and Alaska Native1.0% · 1
Timeline
Historical Census data for Masonis
Masonis 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
#153,590
National surname rank
Recorded bearers 104
-9 bearers (-8.0%)
Per 100,000 0.03
Rank movement Down 7,389 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #146,201 | 113 | 0.04 | First available Census row | First available Census row |
| 2020 | #153,590 | 104 | 0.03 | -9 bearers (-8.0%) | Down 7,389 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 Masonis 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 | #146,201 | #153,590 | -5.1% |
| Count | 113 | 104 | -8.0% |
| Per 100K | 0.04 | 0.03 | -13.0% |
Between the 2010 and 2020 Census, the number of Masonis bearers went from 113 to 104 (-8.0% change). The surname moved down 7,389 positions in the national ranking, going from #146,201 to #153,590.
FAQ
Masonis surname: questions and answers
How many people in the U.S. have the surname Masonis?
Name Census estimates that about 119 living Americans carry the surname Masonis. Using the current population baseline, that works out to roughly 1 in 2,880,289 residents.
How common is Masonis?
Masonis ranks #153,590 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 104 people with the surname Masonis. That is different from the site's living-bearer estimate (119), 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 Masonis.
Has Masonis become more or less common over time?
Between 2010 and 2020, the surname Masonis went from 113 recorded bearers to 104. That is a decrease of 9 (-8.0%). In the national ranking it fell from #146,201 to #153,590.
What does the Census say about the background of Masonis?
Among Census respondents with the surname Masonis, the largest self-reported group is White at 89.4%. The next largest groups are Two or More Races (3.8%) and Black (2.9%). 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 Masonis in the 2020 Census, accounting for 89.4% (93 people in the source table).
What is the full ancestry breakdown?
Masonis appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.4%), Two or More Races (3.8%), Black (2.9%). 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 Masonis (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 Masonis mean?
A surname derived from the Latin word for a mason or stonemason. 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 Masonis (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 surname Masonis?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.