2000
#148,244
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.04
Very Rare Last name
Rumbolz
A German surname derived from a topographic name referring to someone who lived near a boundary marker.
According to the 2020 US Census Bureau surname tables, roughly 120 Americans carry the last name Rumbolz. That puts it at #152,989 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,856,286 residents).
This page is the full Name Census profile for the Rumbolz 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
120
1 in 2,856,286
Census rank
#152,989
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
105
very rare in the US
Popularity narrative
The Census Bureau recorded 105 bearers of the surname Rumbolz in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152989th position in the national surname ranking.
Among Census respondents with the surname Rumbolz, the largest self-reported group is White at 95.2%. The next largest groups are Hispanic (2.9%) and Asian/Pacific Islander (1.0%).
Origin
Meaning and origin of Rumbolz
The surname Rumbolz is of German origin, tracing its roots back to the 16th century. It is believed to have originated from the Lower Saxony region of Germany, though the exact location remains uncertain. Some scholars suggest it may be derived from the Old German word "rumm," meaning "broad," and "bolz," which could refer to a log or a piece of wood, possibly indicating an occupation or a geographic feature associated with the name's bearers.
One of the earliest recorded instances of the Rumbolz name can be found in the parish records of the town of Goslar, dated 1589, where a certain Hans Rumbolz is listed as a resident. There is also evidence of the name appearing in the records of the nearby village of Langelsheim in the early 17th century.
During the 17th and 18th centuries, the Rumbolz name began to spread across various regions of Germany, with branches of the family settling in areas such as Saxony, Thuringia, and Bavaria. Notable individuals from this period include Johann Rumbolz (1622-1692), a prominent merchant from Leipzig, and Anna Rumbolz (1671-1743), a respected midwife from the town of Erfurt.
As Germany experienced waves of emigration in the 19th century, many Rumbolz families sought new opportunities in other parts of the world. One such individual was Friedrich Rumbolz (1802-1879), who left his hometown of Nuremberg and settled in the United States, becoming one of the earliest Rumbolz settlers in the country.
Throughout its history, the Rumbolz name has been associated with various occupations and professions. In addition to merchants and midwives, there have been Rumbolz individuals who have made their mark as artisans, musicians, and scholars. Notable examples include Karl Rumbolz (1856-1929), a renowned German composer and conductor, and Elise Rumbolz (1882-1964), a respected linguist and professor at the University of Heidelberg.
While the Rumbolz name may not be among the most widely recognized surnames, it has left an indelible mark on the history and culture of Germany and beyond. From its humble beginnings in the Lower Saxony region, it has become a part of the rich tapestry of names that reflect the diverse heritage and experiences of the German people.
Demographics
Ancestry and ethnicity for Rumbolz
Among Census respondents with the surname Rumbolz, the largest self-reported group is White at 95.2%. The next largest groups are Hispanic (2.9%) and Asian/Pacific Islander (1.0%).
The bar chart below shows how Rumbolz 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 Rumbolz surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.2% · 100
- Hispanic or Latino2.9% · 3
- Asian and Pacific Islander1.0% · 1
- American Indian and Alaska Native1.0% · 1
Timeline
Historical Census data for Rumbolz
Rumbolz 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
#137,327
National surname rank
Recorded bearers 122
+20 bearers (+19.6%)
Per 100,000 0.04
Rank movement Up 10,917 places
2020
#152,989
National surname rank
Recorded bearers 105
-17 bearers (-13.9%)
Per 100,000 0.04
Rank movement Down 15,662 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #148,244 | 102 | 0.04 | First available Census row | First available Census row |
| 2010 | #137,327 | 122 | 0.04 | +20 bearers (+19.6%) | Up 10,917 places |
| 2020 | #152,989 | 105 | 0.04 | -17 bearers (-13.9%) | Down 15,662 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 Rumbolz 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 | #137,327 | #152,989 | -11.4% |
| Count | 122 | 105 | -13.9% |
| Per 100K | 0.04 | 0.04 | -12.2% |
Between the 2010 and 2020 Census, the number of Rumbolz bearers went from 122 to 105 (-13.9% change). The surname moved down 15,662 positions in the national ranking, going from #137,327 to #152,989.
FAQ
Rumbolz surname: questions and answers
How many people in the U.S. have the surname Rumbolz?
Name Census estimates that about 120 living Americans carry the surname Rumbolz. Using the current population baseline, that works out to roughly 1 in 2,856,286 residents.
How common is Rumbolz?
Rumbolz ranks #152,989 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 105 people with the surname Rumbolz. That is different from the site's living-bearer estimate (120), 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 Rumbolz.
Has Rumbolz become more or less common over time?
Between 2010 and 2020, the surname Rumbolz went from 122 recorded bearers to 105. That is a decrease of 17 (-13.9%). In the national ranking it fell from #137,327 to #152,989.
What does the Census say about the background of Rumbolz?
Among Census respondents with the surname Rumbolz, the largest self-reported group is White at 95.2%. The next largest groups are Hispanic (2.9%) and Asian/Pacific Islander (1.0%). 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 Rumbolz in the 2020 Census, accounting for 95.2% (100 people in the source table).
What is the full ancestry breakdown?
Rumbolz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.2%), Hispanic (2.9%), Asian/Pacific Islander (1.0%). 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 Rumbolz (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 Rumbolz mean?
A German surname derived from a topographic name referring to someone who lived near a boundary marker. 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 Rumbolz (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 Rumbolz?
For a quick modern take, check how many Americans have the surname Rumbolz on our sister site HowManyOfMe.org.