2010
#136,449
National surname rank
Recorded bearers 123
First available Census row
Per 100,000 0.04
Very Rare Last name
Blatzheim
A German surname likely meaning "from Blatzheim", a place name.
According to the 2020 US Census Bureau surname tables, roughly 114 Americans carry the last name Blatzheim. That puts it at #156,005 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 3,006,617 residents).
This page is the full Name Census profile for the Blatzheim 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
114
1 in 3,006,617
Census rank
#156,005
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
99
very rare in the US
Popularity narrative
The Census Bureau recorded 99 bearers of the surname Blatzheim in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 156005th position in the national surname ranking.
Among Census respondents with the surname Blatzheim, the largest self-reported group is White at 96.0%. The next largest groups are Two or More Races (3.0%) and Black (1.0%).
Origin
Meaning and origin of Blatzheim
The surname Blatzheim originated in Germany, with records dating back to the early 16th century. It is believed to be derived from the place name Blatzheim, a town located in the district of Düren, North Rhine-Westphalia, Germany. The name itself is thought to have its roots in the Old High German words "blah" meaning "pale" or "white" and "heim" meaning "home" or "settlement."
One of the earliest recorded instances of the name Blatzheim can be found in the archives of the town of Düren, where a Johann Blatzheim is mentioned as a landowner in the year 1524. Another notable early reference is in the church records of the nearby village of Niederzier, where a family by the name of Blatzheim is listed as residents in the late 1500s.
In the 17th century, the name appears in various historical documents related to the region around Düren and Aachen. For instance, a Peter Blatzheim is mentioned as a member of the local guild of blacksmiths in Aachen in the year 1643. Another record from 1671 refers to a Maria Blatzheim, who was a member of the congregation at the St. Michael's Church in Düren.
One of the earliest known individuals to carry the surname Blatzheim was Johannes Blatzheim, born in the town of Blatzheim in 1612. He was a prominent figure in the local community and served as the mayor of the town from 1658 until his death in 1679.
Another noteworthy individual with the surname Blatzheim was Heinrich Blatzheim (1820-1892), a German politician and member of the Reichstag (the Parliament of the German Empire) from 1871 to 1884. He was a vocal advocate for workers' rights and played a significant role in the early stages of the German labor movement.
The surname Blatzheim also has connections to the arts, with Karl Blatzheim (1856-1923) being a well-known German painter and sculptor. He was particularly renowned for his portraits and monumental sculptures, and his works can be found in various museums and public spaces throughout Germany.
In the field of science, the name Blatzheim is associated with Wilhelm Blatzheim (1884-1957), a German physicist and professor at the University of Bonn. He made significant contributions to the study of atomic physics and was involved in the early research on nuclear fission.
While the surname Blatzheim is not as common today as it once was, it remains an important part of German cultural heritage, with its roots firmly planted in the historical town from which it originated.
Demographics
Ancestry and ethnicity for Blatzheim
Among Census respondents with the surname Blatzheim, the largest self-reported group is White at 96.0%. The next largest groups are Two or More Races (3.0%) and Black (1.0%).
The bar chart below shows how Blatzheim 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 Blatzheim surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.0% · 95
- Two or more races3.0% · 3
- Black or African American1.0% · 1
Timeline
Historical Census data for Blatzheim
Blatzheim 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
#156,005
National surname rank
Recorded bearers 99
-24 bearers (-19.5%)
Per 100,000 0.03
Rank movement Down 19,556 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #136,449 | 123 | 0.04 | First available Census row | First available Census row |
| 2020 | #156,005 | 99 | 0.03 | -24 bearers (-19.5%) | Down 19,556 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 Blatzheim 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 | #136,449 | #156,005 | -14.3% |
| Count | 123 | 99 | -19.5% |
| Per 100K | 0.04 | 0.03 | -17.2% |
Between the 2010 and 2020 Census, the number of Blatzheim bearers went from 123 to 99 (-19.5% change). The surname moved down 19,556 positions in the national ranking, going from #136,449 to #156,005.
FAQ
Blatzheim surname: questions and answers
How many people in the U.S. have the surname Blatzheim?
Name Census estimates that about 114 living Americans carry the surname Blatzheim. Using the current population baseline, that works out to roughly 1 in 3,006,617 residents.
How common is Blatzheim?
Blatzheim ranks #156,005 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 99 people with the surname Blatzheim. That is different from the site's living-bearer estimate (114), 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 Blatzheim.
Has Blatzheim become more or less common over time?
Between 2010 and 2020, the surname Blatzheim went from 123 recorded bearers to 99. That is a decrease of 24 (-19.5%). In the national ranking it fell from #136,449 to #156,005.
What does the Census say about the background of Blatzheim?
Among Census respondents with the surname Blatzheim, the largest self-reported group is White at 96.0%. The next largest groups are Two or More Races (3.0%) and Black (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 Blatzheim in the 2020 Census, accounting for 96.0% (95 people in the source table).
What is the full ancestry breakdown?
Blatzheim appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.0%), Two or More Races (3.0%), Black (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 Blatzheim (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 Blatzheim mean?
A German surname likely meaning "from Blatzheim", a place name. 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 Blatzheim (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 many Americans have the surname Blatzheim?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.