2000
#132,259
National surname rank
Recorded bearers 118
First available Census row
Per 100,000 0.04
Very Rare Last name
Dasbach
A German surname derived from a Germanic name meaning "dweller by the brook".
According to the 2020 US Census Bureau surname tables, roughly 136 Americans carry the last name Dasbach. That puts it at #142,788 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,520,252 residents).
This page is the full Name Census profile for the Dasbach 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
136
1 in 2,520,252
Census rank
#142,788
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
119
very rare in the US
Popularity narrative
The Census Bureau recorded 119 bearers of the surname Dasbach in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 142788th position in the national surname ranking.
Among Census respondents with the surname Dasbach, the largest self-reported group is White at 83.2%. The next largest groups are Two or More Races (7.6%) and Hispanic (6.7%).
Origin
Meaning and origin of Dasbach
The surname Dasbach is of German origin, tracing its roots back to the 16th century in the Rhineland region of Germany. The name is derived from the Old German words "das" meaning "the" and "bach" meaning "stream" or "brook." This suggests that the name likely originated as a place name, referring to a settlement near a particular stream or watercourse.
One of the earliest recorded mentions of the Dasbach name can be found in the Kirchenbücher (church records) of the Rhineland region from the late 1500s. These records often documented baptisms, marriages, and burials within local communities, providing valuable insights into the history and spread of surnames like Dasbach.
During the 17th and 18th centuries, the Dasbach name appeared in various historical documents and records across Germany. For instance, Johann Dasbach (1625-1697), a German scholar and theologian, was born in Strasbourg and is notable for his contributions to the field of Reformed theology.
Another figure of note is Caspar Dasbach (1718-1791), a German painter and engraver who was active in the Baroque and Rococo styles. His works can be found in various art collections throughout Europe, showcasing the artistic talents of those bearing the Dasbach surname.
In the 19th century, the Dasbach name gained prominence in the field of politics and law. Friedrich Dasbach (1816-1892) was a German jurist and politician who served as a member of the Prussian House of Representatives and the Reichstag (German parliament).
Moving into the 20th century, we find the name Dasbach associated with the field of aviation. Hans Dasbach (1904-1987) was a German pilot and aircraft designer who played a significant role in the development of the Messerschmitt Bf 109, a renowned German fighter aircraft during World War II.
Throughout its history, the Dasbach surname has been found in various parts of Germany, particularly in the regions of Rhineland, Westphalia, and Bavaria. While the name has evolved and spread across different regions, its origins can be traced back to the German countryside and the settlements that once dotted the banks of streams and brooks.
Demographics
Ancestry and ethnicity for Dasbach
Among Census respondents with the surname Dasbach, the largest self-reported group is White at 83.2%. The next largest groups are Two or More Races (7.6%) and Hispanic (6.7%).
The bar chart below shows how Dasbach 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 Dasbach surname at the time of the 2020 Census, not any inherent property of the name itself.
- White83.2% · 99
- Two or more races7.6% · 9
- Hispanic or Latino6.7% · 8
- Black or African American1.7% · 2
- Asian and Pacific Islander0.8% · 1
Timeline
Historical Census data for Dasbach
Dasbach 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
#139,228
National surname rank
Recorded bearers 120
+2 bearers (+1.7%)
Per 100,000 0.04
Rank movement Down 6,969 places
2020
#142,788
National surname rank
Recorded bearers 119
-1 bearers (-0.8%)
Per 100,000 0.04
Rank movement Down 3,560 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #132,259 | 118 | 0.04 | First available Census row | First available Census row |
| 2010 | #139,228 | 120 | 0.04 | +2 bearers (+1.7%) | Down 6,969 places |
| 2020 | #142,788 | 119 | 0.04 | -1 bearers (-0.8%) | Down 3,560 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 Dasbach 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 | #139,228 | #142,788 | -2.6% |
| Count | 120 | 119 | -0.8% |
| Per 100K | 0.04 | 0.04 | -0.5% |
Between the 2010 and 2020 Census, the number of Dasbach bearers went from 120 to 119 (-0.8% change). The surname moved down 3,560 positions in the national ranking, going from #139,228 to #142,788.
FAQ
Dasbach surname: questions and answers
How many people in the U.S. have the surname Dasbach?
Name Census estimates that about 136 living Americans carry the surname Dasbach. Using the current population baseline, that works out to roughly 1 in 2,520,252 residents.
How common is Dasbach?
Dasbach ranks #142,788 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 119 people with the surname Dasbach. That is different from the site's living-bearer estimate (136), 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 Dasbach.
Has Dasbach become more or less common over time?
Between 2010 and 2020, the surname Dasbach went from 120 recorded bearers to 119. That is a decrease of 1 (-0.8%). In the national ranking it fell from #139,228 to #142,788.
What does the Census say about the background of Dasbach?
Among Census respondents with the surname Dasbach, the largest self-reported group is White at 83.2%. The next largest groups are Two or More Races (7.6%) and Hispanic (6.7%). 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 Dasbach in the 2020 Census, accounting for 83.2% (99 people in the source table).
What is the full ancestry breakdown?
Dasbach appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (83.2%), Two or More Races (7.6%), Hispanic (6.7%). 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 Dasbach (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 Dasbach mean?
A German surname derived from a Germanic name meaning "dweller by the brook". 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 Dasbach (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 Dasbach?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.