2000
#133,114
National surname rank
Recorded bearers 117
First available Census row
Per 100,000 0.04
Very Rare Last name
Mosio
A surname indicating a person of Muscovite or Russian descent.
According to the 2020 US Census Bureau surname tables, roughly 127 Americans carry the last name Mosio. That puts it at #148,665 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,698,853 residents).
This page is the full Name Census profile for the Mosio 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
127
1 in 2,698,853
Census rank
#148,665
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
111
very rare in the US
Popularity narrative
The Census Bureau recorded 111 bearers of the surname Mosio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 148665th position in the national surname ranking.
Among Census respondents with the surname Mosio, the largest self-reported group is White at 91.9%. The next largest groups are Black (2.7%) and Asian/Pacific Islander (2.7%).
Origin
Meaning and origin of Mosio
The surname Mosio has its origins in Italy, specifically in the northern region of Lombardy. It is believed to have emerged during the 11th or 12th century, originating from the Italian word "moscia," which means "moss." This suggests that the name may have initially been a descriptive surname, referring to someone who lived near or worked with moss.
One of the earliest recorded instances of the name Mosio can be found in a document from the city of Bergamo, dated around 1220. The document mentions a man named Giovanni Mosio, who was a landowner in the area. It is likely that this individual adopted the surname as a way to distinguish himself from others with the same given name.
In the 14th century, the name Mosio appeared in several municipal records and tax rolls in the towns of Brescia and Crema. These records indicate that families bearing this surname were involved in various trades, including agriculture, textile manufacturing, and commerce.
During the Renaissance period, a prominent figure with the surname Mosio was Girolamo Mosio, a renowned painter and architect who lived in Milan from 1492 to 1556. His works can be found in several churches and palaces throughout northern Italy, and he is considered one of the most influential artists of the Lombard Renaissance.
Another notable individual with the surname Mosio was Cesare Mosio, a 16th-century poet and scholar from Cremona. He was known for his elegant sonnets and his translations of ancient Greek and Latin texts. Cesare Mosio lived from 1540 to 1613.
In the 17th century, the Mosio family established itself in the city of Mantua, where they became involved in the silk trade. One member of this family, Antonio Mosio (1610-1678), was a prominent silk merchant and served as a councilor in the city's government.
As the centuries passed, the surname Mosio spread to other parts of Italy, with pockets of families bearing this name appearing in regions such as Piedmont, Veneto, and Tuscany. However, the name remained most prevalent in its area of origin, Lombardy.
While the surname Mosio may not be as common today as it once was, it has left a lasting imprint on Italian history and culture, with various historical figures and notable families having borne this name over the centuries.
Demographics
Ancestry and ethnicity for Mosio
Among Census respondents with the surname Mosio, the largest self-reported group is White at 91.9%. The next largest groups are Black (2.7%) and Asian/Pacific Islander (2.7%).
The bar chart below shows how Mosio 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 Mosio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.9% · 102
- Black or African American2.7% · 3
- Asian and Pacific Islander2.7% · 3
- Two or more races2.7% · 3
Timeline
Historical Census data for Mosio
Mosio 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
#156,044
National surname rank
Recorded bearers 104
-13 bearers (-11.1%)
Per 100,000 0.04
Rank movement Down 22,930 places
2020
#148,665
National surname rank
Recorded bearers 111
+7 bearers (+6.7%)
Per 100,000 0.04
Rank movement Up 7,379 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #133,114 | 117 | 0.04 | First available Census row | First available Census row |
| 2010 | #156,044 | 104 | 0.04 | -13 bearers (-11.1%) | Down 22,930 places |
| 2020 | #148,665 | 111 | 0.04 | +7 bearers (+6.7%) | Up 7,379 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 Mosio 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 | #156,044 | #148,665 | 4.7% |
| Count | 104 | 111 | 6.7% |
| Per 100K | 0.04 | 0.04 | -7.2% |
Between the 2010 and 2020 Census, the number of Mosio bearers went from 104 to 111 (+6.7% change). The surname moved up 7,379 positions in the national ranking, going from #156,044 to #148,665.
FAQ
Mosio surname: questions and answers
How many people in the U.S. have the surname Mosio?
Name Census estimates that about 127 living Americans carry the surname Mosio. Using the current population baseline, that works out to roughly 1 in 2,698,853 residents.
How common is Mosio?
Mosio ranks #148,665 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 111 people with the surname Mosio. That is different from the site's living-bearer estimate (127), 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 Mosio.
Has Mosio become more or less common over time?
Between 2010 and 2020, the surname Mosio went from 104 recorded bearers to 111. That is an increase of 7 (+6.7%). In the national ranking it rose from #156,044 to #148,665.
What does the Census say about the background of Mosio?
Among Census respondents with the surname Mosio, the largest self-reported group is White at 91.9%. The next largest groups are Black (2.7%) and Asian/Pacific Islander (2.7%). 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 Mosio in the 2020 Census, accounting for 91.9% (102 people in the source table).
What is the full ancestry breakdown?
Mosio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.9%), Black (2.7%), Asian/Pacific Islander (2.7%). 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 Mosio (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 Mosio mean?
A surname indicating a person of Muscovite or Russian descent. 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 Mosio (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 are called Mosio?
If you just want to know how many people have the last name Mosio, HowManyOfMe.org gives you the headline number in one glance.