2000
#105,374
National surname rank
Recorded bearers 157
First available Census row
Per 100,000 0.06
Very Rare Last name
Rothaus
A German surname meaning "red house" or "reddish-colored house."
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Rothaus. That puts it at #141,309 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,465,859 residents).
This page is the full Name Census profile for the Rothaus 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
139
1 in 2,465,859
Census rank
#141,309
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
121
very rare in the US
Popularity narrative
The Census Bureau recorded 121 bearers of the surname Rothaus in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 141309th position in the national surname ranking.
Among Census respondents with the surname Rothaus, the largest self-reported group is White at 89.3%. The next largest groups are Hispanic (7.4%) and Asian/Pacific Islander (1.7%).
Origin
Meaning and origin of Rothaus
The surname ROTHAUS originated in Germany, with the earliest records dating back to the 13th century. It is believed to be derived from the Old German words "rot" meaning red and "haus" meaning house, likely referring to someone who lived in a red-colored house or a building with a red roof.
One of the earliest mentions of the name can be found in the Würzburg Chronicles, a medieval manuscript from the late 13th century, which lists a "Rothaus von Rothenburg" as a resident of the city of Rothenburg ob der Tauber in Bavaria.
During the 14th century, variations of the name such as "Roythus" and "Rodehuys" appeared in various municipal records across southern Germany, particularly in the regions of Baden-Württemberg and Bavaria.
In the 15th century, a notable figure with the surname ROTHAUS was Johannes Rothaus (1427-1506), a German theologian and rector of the University of Erfurt. He was known for his works on the philosophy of nominalism and his involvement in the reform movements within the Catholic Church.
Another prominent individual was Peter Rothaus (1550-1628), a German poet and translator from Nuremberg. He is best known for his translations of Latin and Greek works into German, including the works of Ovid and Horace.
In the 17th century, the name appeared in the records of the town of Rothaus (now known as Rothhaus) in the Palatinate region of Germany, suggesting a possible connection between the surname and the place name.
During the 18th century, Georg Rothaus (1723-1804) was a renowned German architect and urban planner, responsible for the design of several notable buildings and urban developments in Stuttgart and other cities in southwestern Germany.
Another notable figure was Friedrich Rothaus (1785-1863), a German botanist and naturalist from Baden-Württemberg. He conducted extensive research on the flora of southern Germany and made significant contributions to the field of plant taxonomy.
By the 19th century, the surname ROTHAUS had spread to other parts of Europe and even to the Americas, as German immigrants carried the name with them during the waves of migration.
Demographics
Ancestry and ethnicity for Rothaus
Among Census respondents with the surname Rothaus, the largest self-reported group is White at 89.3%. The next largest groups are Hispanic (7.4%) and Asian/Pacific Islander (1.7%).
The bar chart below shows how Rothaus 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 Rothaus surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.3% · 108
- Hispanic or Latino7.4% · 9
- Asian and Pacific Islander1.7% · 2
- Two or more races1.7% · 2
Timeline
Historical Census data for Rothaus
Rothaus 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
#129,825
National surname rank
Recorded bearers 131
-26 bearers (-16.6%)
Per 100,000 0.04
Rank movement Down 24,451 places
2020
#141,309
National surname rank
Recorded bearers 121
-10 bearers (-7.6%)
Per 100,000 0.04
Rank movement Down 11,484 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #105,374 | 157 | 0.06 | First available Census row | First available Census row |
| 2010 | #129,825 | 131 | 0.04 | -26 bearers (-16.6%) | Down 24,451 places |
| 2020 | #141,309 | 121 | 0.04 | -10 bearers (-7.6%) | Down 11,484 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 Rothaus 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 | #129,825 | #141,309 | -8.8% |
| Count | 131 | 121 | -7.6% |
| Per 100K | 0.04 | 0.04 | 1.2% |
Between the 2010 and 2020 Census, the number of Rothaus bearers went from 131 to 121 (-7.6% change). The surname moved down 11,484 positions in the national ranking, going from #129,825 to #141,309.
FAQ
Rothaus surname: questions and answers
How many people in the U.S. have the surname Rothaus?
Name Census estimates that about 139 living Americans carry the surname Rothaus. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Rothaus?
Rothaus ranks #141,309 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 121 people with the surname Rothaus. That is different from the site's living-bearer estimate (139), 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 Rothaus.
Has Rothaus become more or less common over time?
Between 2010 and 2020, the surname Rothaus went from 131 recorded bearers to 121. That is a decrease of 10 (-7.6%). In the national ranking it fell from #129,825 to #141,309.
What does the Census say about the background of Rothaus?
Among Census respondents with the surname Rothaus, the largest self-reported group is White at 89.3%. The next largest groups are Hispanic (7.4%) and Asian/Pacific Islander (1.7%). 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 Rothaus in the 2020 Census, accounting for 89.3% (108 people in the source table).
What is the full ancestry breakdown?
Rothaus appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.3%), Hispanic (7.4%), Asian/Pacific Islander (1.7%). 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 Rothaus (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 Rothaus mean?
A German surname meaning "red house" or "reddish-colored house." 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 Rothaus (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 Americans have the surname Rothaus?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.