2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Rozboril
A Czech surname derived from the verb "rozbořit" meaning "to demolish" or "to destroy".
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Rozboril. 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 Rozboril 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 Rozboril 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 Rozboril, the largest self-reported group is White at 94.2%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.9%).
Origin
Meaning and origin of Rozboril
The surname Rozboril has its origins in the Czech Republic, dating back to the 14th century. It is believed to be derived from the Czech word "rozbořit," which means "to demolish" or "to tear down." This suggests that the name may have been associated with occupations related to construction or demolition work.
One of the earliest recorded mentions of the name Rozboril can be found in the records of the town of Brno, located in the present-day Czech Republic, in the year 1381. The name appears in a document listing the names of townsfolk who were engaged in various trades and professions.
During the 15th century, the name Rozboril was also found in the records of the city of Prague, which was then the capital of the Kingdom of Bohemia. A notable individual bearing this name was Jan Rozboril, a stonemason who lived in Prague in the late 1400s and was involved in the construction of several churches and other buildings in the city.
In the 16th century, the name Rozboril spread to other parts of Bohemia and Moravia, which were then part of the Holy Roman Empire. One prominent figure from this period was Vaclav Rozboril, a Catholic priest and scholar who was born in the town of Litomerice in 1537 and served as a professor at the University of Prague.
The 17th century saw the emergence of the Rozboril family in the Silesian region, which is now part of Poland and the Czech Republic. One member of this family, Jan Rozboril, was a successful merchant and landowner who lived in the town of Opava in the late 1600s.
In the 19th century, the Rozboril name was also found in the United States, likely due to immigration from Central Europe. One notable American with this surname was Frantisek Rozboril, a Czech-born artist and sculptor who lived in Chicago in the late 1800s and was known for his works depicting scenes from Czech folklore and history.
Other individuals with the surname Rozboril who have made their mark throughout history include Josef Rozboril, a Czech politician and journalist who lived in the early 20th century, and Jaroslav Rozboril, a Czech painter and illustrator who was active in the second half of the 20th century.
Demographics
Ancestry and ethnicity for Rozboril
Among Census respondents with the surname Rozboril, the largest self-reported group is White at 94.2%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.9%).
The bar chart below shows how Rozboril 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 Rozboril surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.2% · 97
- Two or more races2.9% · 3
- Hispanic or Latino1.9% · 2
- Black or African American1.0% · 1
Timeline
Historical Census data for Rozboril
Rozboril 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
#149,395
National surname rank
Recorded bearers 110
-3 bearers (-2.7%)
Per 100,000 0.04
Rank movement Down 12,612 places
2020
#154,182
National surname rank
Recorded bearers 103
-7 bearers (-6.4%)
Per 100,000 0.03
Rank movement Down 4,787 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #149,395 | 110 | 0.04 | -3 bearers (-2.7%) | Down 12,612 places |
| 2020 | #154,182 | 103 | 0.03 | -7 bearers (-6.4%) | Down 4,787 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 Rozboril 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 | #149,395 | #154,182 | -3.2% |
| Count | 110 | 103 | -6.4% |
| Per 100K | 0.04 | 0.03 | -13.9% |
Between the 2010 and 2020 Census, the number of Rozboril bearers went from 110 to 103 (-6.4% change). The surname moved down 4,787 positions in the national ranking, going from #149,395 to #154,182.
FAQ
Rozboril surname: questions and answers
How many people in the U.S. have the surname Rozboril?
Name Census estimates that about 118 living Americans carry the surname Rozboril. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Rozboril?
Rozboril 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 Rozboril. 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 Rozboril.
Has Rozboril become more or less common over time?
Between 2010 and 2020, the surname Rozboril went from 110 recorded bearers to 103. That is a decrease of 7 (-6.4%). In the national ranking it fell from #149,395 to #154,182.
What does the Census say about the background of Rozboril?
Among Census respondents with the surname Rozboril, the largest self-reported group is White at 94.2%. The next largest groups are Two or More Races (2.9%) and Hispanic (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 Rozboril in the 2020 Census, accounting for 94.2% (97 people in the source table).
What is the full ancestry breakdown?
Rozboril appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.2%), Two or More Races (2.9%), Hispanic (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 Rozboril (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 Rozboril mean?
A Czech surname derived from the verb "rozbořit" meaning "to demolish" or "to destroy". 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 Rozboril (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 common is the surname Rozboril?
Our sister site HowManyOfMe.org answers how many Americans have the surname Rozboril at a glance, with the living-bearer count up front.