2010
#154,907
National surname rank
Recorded bearers 105
First available Census row
Per 100,000 0.04
Very Rare Last name
Dubak
A surname likely of Slavic origin derived from a topographic name or occupation.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Dubak. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Dubak 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Dubak in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Dubak, the largest self-reported group is White at 96.3%. The next largest groups are Two or More Races (2.8%) and Black (0.9%).
Origin
Meaning and origin of Dubak
The surname DUBAK has its origins in the Czech Republic, dating back to the 12th century. It is derived from the Czech word "dub," which means "oak," and likely referred to someone who lived near an oak forest or who worked with oak trees.
The earliest recorded mention of the surname DUBAK can be found in a 13th-century manuscript from the town of Olomouc, where it was spelled "Duback." This document suggests that the name was initially concentrated in the eastern regions of what is now the Czech Republic.
In the 14th century, variants of the name, such as "Dubacek" and "Dubacky," appeared in records from the towns of Brno and Ostrava, indicating that the name had spread to other parts of the country.
One of the earliest known bearers of the DUBAK surname was Jan Dubak, a farmer from the village of Horní Dubák, born around 1450. The village's name, which means "upper oak," further reinforces the connection between the surname and the oak tree.
Another notable individual with this surname was Petr Dubak, a military commander who fought in the Hussite Wars during the 15th century. He was born in the town of Kutná Hora in 1410 and died in battle in 1435.
In the 16th century, the surname DUBAK appeared in the records of the University of Prague, where several students with this name were enrolled, suggesting that the family had achieved a certain level of prominence and education.
During the 17th century, a branch of the DUBAK family settled in the town of Plzeň, where they became prominent brewers. One of their descendants, Václav Dubak (1680-1748), was a renowned master brewer and is credited with developing the recipe for the famous Pilsner beer.
Another notable bearer of the DUBAK surname was Karel Dubak (1825-1892), a Czech writer and journalist who played a significant role in the Czech National Revival movement, advocating for the preservation of the Czech language and culture.
While the surname DUBAK remains relatively uncommon outside of the Czech Republic, it has a rich history and is firmly rooted in the country's cultural heritage, particularly its connection to the oak tree and the traditions of forestry and woodworking.
Demographics
Ancestry and ethnicity for Dubak
Among Census respondents with the surname Dubak, the largest self-reported group is White at 96.3%. The next largest groups are Two or More Races (2.8%) and Black (0.9%).
The bar chart below shows how Dubak 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 Dubak surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.3% · 105
- Two or more races2.8% · 3
- Black or African American0.9% · 1
Timeline
Historical Census data for Dubak
Dubak 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
#150,205
National surname rank
Recorded bearers 109
+4 bearers (+3.8%)
Per 100,000 0.04
Rank movement Up 4,702 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #154,907 | 105 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,205 | 109 | 0.04 | +4 bearers (+3.8%) | Up 4,702 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 Dubak 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 | #154,907 | #150,205 | 3.0% |
| Count | 105 | 109 | 3.8% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Dubak bearers went from 105 to 109 (+3.8% change). The surname moved up 4,702 positions in the national ranking, going from #154,907 to #150,205.
FAQ
Dubak surname: questions and answers
How many people in the U.S. have the surname Dubak?
Name Census estimates that about 125 living Americans carry the surname Dubak. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Dubak?
Dubak ranks #150,205 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 109 people with the surname Dubak. That is different from the site's living-bearer estimate (125), 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 Dubak.
Has Dubak become more or less common over time?
Between 2010 and 2020, the surname Dubak went from 105 recorded bearers to 109. That is an increase of 4 (+3.8%). In the national ranking it rose from #154,907 to #150,205.
What does the Census say about the background of Dubak?
Among Census respondents with the surname Dubak, the largest self-reported group is White at 96.3%. The next largest groups are Two or More Races (2.8%) and Black (0.9%). 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 Dubak in the 2020 Census, accounting for 96.3% (105 people in the source table).
What is the full ancestry breakdown?
Dubak appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.3%), Two or More Races (2.8%), Black (0.9%). 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 Dubak (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 Dubak mean?
A surname likely of Slavic origin derived from a topographic name or occupation. 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 Dubak (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 common is the surname Dubak?
Want to know how many Americans have the surname Dubak? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.