2010
#159,712
National surname rank
Recorded bearers 101
First available Census row
Per 100,000 0.03
Very Rare Last name
Sietmann
A surname meaning "settler", "colonist", or "resident" of a particular place.
According to the 2020 US Census Bureau surname tables, roughly 115 Americans carry the last name Sietmann. That puts it at #155,682 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,980,473 residents).
This page is the full Name Census profile for the Sietmann 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
115
1 in 2,980,473
Census rank
#155,682
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
100
very rare in the US
Popularity narrative
The Census Bureau recorded 100 bearers of the surname Sietmann in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155682nd position in the national surname ranking.
Among Census respondents with the surname Sietmann, the largest self-reported group is White at 87.0%. The next largest groups are Hispanic (5.0%) and Two or More Races (4.0%).
Origin
Meaning and origin of Sietmann
The surname Sietmann is believed to have originated in Germany, specifically in the northern regions of the country. It is thought to have its roots in the Old German language, where the word "siet" meant "clean" or "pure," while "mann" referred to a person or a human being. Consequently, the name Sietmann may have initially been used to describe someone who was perceived as pure or clean in character or appearance.
During the Middle Ages, the name Sietmann appeared in various historical records and documents across northern Germany. One notable mention is found in the Codex Diplomaticus Saxoniae, a collection of medieval charters and documents from the region of Saxony, where a certain Sietmann von Lüneburg is referenced in the year 1248.
The earliest recorded instances of the surname Sietmann can be traced back to the 13th century. In 1271, a man named Johannes Sietmann was documented in the city of Lübeck, a prominent trading center in northern Germany at the time. Another early example is Henricus Sietmann, who was mentioned in a record from the town of Rostock in 1289.
Throughout history, there have been several notable individuals who bore the surname Sietmann. One such person was Friedrich Sietmann (1805-1868), a German philosopher and theologian who was known for his work on the concept of the "absolute" in philosophy. Another notable figure was Karl Sietmann (1856-1924), a German architect who designed several prominent buildings in Berlin and other cities.
In the realm of literature, the name Sietmann is associated with the German writer and poet, Theodor Sietmann (1878-1957), who was renowned for his works that explored themes of nature and spirituality. Additionally, Hans Sietmann (1892-1971) was a German politician who served as a member of the Reichstag (parliament) during the Weimar Republic era.
One of the earliest known places associated with the surname Sietmann is the village of Sietmannsfeld, located in the state of Lower Saxony, Germany. This location likely derived its name from an early bearer of the Sietmann surname, suggesting a strong connection between the name and the region.
While the surname Sietmann may have evolved over time and experienced variations in spelling, such as Sittmann or Zietmann, its origins can be traced back to the northern regions of Germany, where it was initially linked to the concept of purity or cleanliness in the Old German language.
Demographics
Ancestry and ethnicity for Sietmann
Among Census respondents with the surname Sietmann, the largest self-reported group is White at 87.0%. The next largest groups are Hispanic (5.0%) and Two or More Races (4.0%).
The bar chart below shows how Sietmann 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 Sietmann surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.0% · 87
- Hispanic or Latino5.0% · 5
- Two or more races4.0% · 4
- Black or African American3.0% · 3
- American Indian and Alaska Native1.0% · 1
Timeline
Historical Census data for Sietmann
Sietmann 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
#155,682
National surname rank
Recorded bearers 100
-1 bearers (-1.0%)
Per 100,000 0.03
Rank movement Up 4,030 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #159,712 | 101 | 0.03 | First available Census row | First available Census row |
| 2020 | #155,682 | 100 | 0.03 | -1 bearers (-1.0%) | Up 4,030 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 Sietmann 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 | #159,712 | #155,682 | 2.5% |
| Count | 101 | 100 | -1.0% |
| Per 100K | 0.03 | 0.03 | 11.5% |
Between the 2010 and 2020 Census, the number of Sietmann bearers went from 101 to 100 (-1.0% change). The surname moved up 4,030 positions in the national ranking, going from #159,712 to #155,682.
FAQ
Sietmann surname: questions and answers
How many people in the U.S. have the surname Sietmann?
Name Census estimates that about 115 living Americans carry the surname Sietmann. Using the current population baseline, that works out to roughly 1 in 2,980,473 residents.
How common is Sietmann?
Sietmann ranks #155,682 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 100 people with the surname Sietmann. That is different from the site's living-bearer estimate (115), 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 Sietmann.
Has Sietmann become more or less common over time?
Between 2010 and 2020, the surname Sietmann went from 101 recorded bearers to 100. That is a decrease of 1 (-1.0%). In the national ranking it rose from #159,712 to #155,682.
What does the Census say about the background of Sietmann?
Among Census respondents with the surname Sietmann, the largest self-reported group is White at 87.0%. The next largest groups are Hispanic (5.0%) and Two or More Races (4.0%). 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 Sietmann in the 2020 Census, accounting for 87.0% (87 people in the source table).
What is the full ancestry breakdown?
Sietmann appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.0%), Hispanic (5.0%), Two or More Races (4.0%). 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 Sietmann (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 Sietmann mean?
A surname meaning "settler", "colonist", or "resident" of a particular place. 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 Sietmann (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 common is the surname Sietmann?
See how many Americans have the surname Sietmann on HowManyOfMe.org, our sister site built around that single question.