Rosar
A possible toponymic surname derived from a place name containing the element "ros" meaning a fell or moor.
According to the 2010 US Census Bureau surname tables, roughly 240 Americans carry the last name Rosar. That puts it at #88,685 in the national surname ranking, appearing at a frequency of 0.07 per 100,000 people (about 1 in 1,428,143 residents).
This page is the full Name Census profile for the Rosar surname. You will find the Census Bureau frequency data, 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
240
1 in 1,428,143
Census rank
#88,685
2010 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
209
very rare in the US
Popularity narrative
The Census Bureau recorded 209 bearers of the surname Rosar in its 2010 decennial surname file. At a rate of 0.07 per 100,000 residents, it holds the 88685th position in the national surname ranking.
Among Census respondents with the surname Rosar, the largest self-reported group is White at 94.7%. The next largest groups are Hispanic (4.3%).
Origin
Meaning and origin of Rosar
The surname Rosar is believed to have originated in the Veneto region of northeastern Italy during the medieval period. It is derived from the Italian word "rosa," meaning "rose," and was likely an occupational name given to those who cultivated or sold roses.
One of the earliest recorded instances of the name Rosar can be found in a document from the city of Verona, dated 1289, which mentions a certain "Petrus Rosar." This suggests that the name was already established in the area by the late 13th century.
In the 14th century, the name appeared in various records from the Venetian Republic, such as the "Libro d'Oro" (Book of Gold), which listed noble families of the region. One notable individual from this period was Giovanni Rosar (c. 1320-1389), a wealthy merchant and landowner from the city of Vicenza.
The Rosar name also had variants and localized spellings, such as "Rosario" and "Rosari," which were more common in southern Italy and Sicily. In the 15th century, a Sicilian family bearing the name Rosari gained prominence, with members serving as military officers and advisors to the ruling dynasties.
As the Renaissance period dawned, the name Rosar spread beyond Italy, carried by merchants and travelers. In the 16th century, a Spanish explorer named Juan Rosar (c. 1510-1583) accompanied Hernán Cortés on his expeditions to the New World and is believed to have settled in Mexico.
In the 17th century, the Rosar name appeared in various European countries, including France, where a notable figure was the poet and playwright Pierre Rosar (1637-1707), whose works were acclaimed during the reign of Louis XIV.
Other notable individuals bearing the Rosar surname include:
1. Antonio Rosar (1759-1832), an Italian painter and sculptor from Venice
2. Émilie Rosar (1825-1892), a French novelist and women's rights advocate
3. Josef Rosar (1892-1976), an Austrian architect and urban planner
4. Margarita Rosar (1920-2004), a Chilean political activist and human rights defender
5. Giancarlo Rosar (born 1954), an Italian author and journalist known for his works on history and culture.
Demographics
Ancestry and ethnicity for Rosar
Among Census respondents with the surname Rosar, the largest self-reported group is White at 94.7%. The next largest groups are Hispanic (4.3%).
The bar chart below shows how Rosar bearers described their own race and ethnicity on the 2010 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.
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 Rosar surname at the time of the 2010 Census, not any inherent property of the name itself.
- White94.7%
- Hispanic or Latino4.3%
Year on year
2010 vs 2010 Census
How has the Rosar surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
| Metric | 2010 | 2010 | Change |
|---|---|---|---|
| Rank | #88,685 | #88,685 | 0.0% |
| Count | 209 | 209 | 0.0% |
| Per 100K | 0.07 | 0.07 | 0.0% |
Between the 2010 and 2010 Census, the number of Rosar bearers went from 209 to 209 (+0.0% change). The surname held its position in the national ranking, going from #88,685 to #88,685.
Notable bearers
Famous people with the surname Rosar
FAQ
Rosar surname: questions and answers
How common is the last name Rosar?
The surname Rosar holds position #88,685 in the US Census Bureau's surname ranking, with an estimated 240 living bearers. It occurs at a rate of 0.07 per 100,000 Americans.
What is the ethnic background of the Rosar surname?
Among Census respondents with the surname Rosar, the largest self-reported group is White at 94.7%. The next largest groups are Hispanic (4.3%). These figures come from the 2010 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Where does this surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These tables list every surname that appeared 100 or more times in the 2010 Census, along with a frequency rate and self-reported demographic breakdown. You can read the full explanation on our methodology page.