2010
#151,532
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Koschmann
A German surname derived from a regional place name.
According to the 2020 US Census Bureau surname tables, roughly 128 Americans carry the last name Koschmann. That puts it at #147,954 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,677,768 residents).
This page is the full Name Census profile for the Koschmann 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
128
1 in 2,677,768
Census rank
#147,954
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
112
very rare in the US
Popularity narrative
The Census Bureau recorded 112 bearers of the surname Koschmann in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147954th position in the national surname ranking.
Among Census respondents with the surname Koschmann, the largest self-reported group is White at 98.2%. The next largest groups are Black (0.9%) and Asian/Pacific Islander (0.9%).
Origin
Meaning and origin of Koschmann
The surname Koschmann has its origins in Germany, with the earliest recorded instances dating back to the 16th century. It is believed to have derived from the German word "Kosch," which referred to a type of grass or reed that grew in marshy areas. This suggests that the name may have initially been used to identify someone who lived near or worked with this particular type of vegetation.
One of the earliest documented mentions of the name Koschmann can be found in the church records of Saxony, a region in eastern Germany. In 1537, a baptismal record lists a child named Hans Koschmann, indicating that the surname was already in use at that time. The spelling variations "Koschman" and "Koschmen" were also noted in subsequent records from the same region.
During the 17th and 18th centuries, the Koschmann name began to spread beyond Saxony as families migrated to other parts of Germany and neighboring countries. In 1673, a man named Johann Koschmann is recorded as a landowner in the town of Görlitz, located in the eastern part of modern-day Germany near the Polish border.
As the Industrial Revolution took hold in the 19th century, some Koschmanns likely sought employment in the growing cities and industrial centers of Germany. One notable figure from this era was Friedrich Koschmann, a prominent industrialist born in 1825 in the city of Dresden. He founded a successful textile manufacturing company that employed hundreds of workers.
The Koschmann name also made its way across the Atlantic Ocean, with some families immigrating to the United States and other countries in the late 19th and early 20th centuries. One of the earliest documented Koschmanns in America was Carl Koschmann, who arrived in New York City from Germany in 1892 at the age of 21.
Another noteworthy individual with the Koschmann surname was Ernst Koschmann, a German writer and philosopher who lived from 1887 to 1973. He authored several books exploring existentialist themes and was influenced by the works of thinkers like Friedrich Nietzsche and Martin Heidegger.
While the Koschmann name may have originated from humble beginnings, referring to those who lived or worked near a particular type of marsh grass, it has since been carried by individuals from various walks of life, including industrialists, writers, and immigrants seeking new opportunities in different parts of the world.
Demographics
Ancestry and ethnicity for Koschmann
Among Census respondents with the surname Koschmann, the largest self-reported group is White at 98.2%. The next largest groups are Black (0.9%) and Asian/Pacific Islander (0.9%).
The bar chart below shows how Koschmann 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 Koschmann surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.2% · 110
- Black or African American0.9% · 1
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Koschmann
Koschmann 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
#147,954
National surname rank
Recorded bearers 112
+4 bearers (+3.7%)
Per 100,000 0.04
Rank movement Up 3,578 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #151,532 | 108 | 0.04 | First available Census row | First available Census row |
| 2020 | #147,954 | 112 | 0.04 | +4 bearers (+3.7%) | Up 3,578 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 Koschmann 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 | #151,532 | #147,954 | 2.4% |
| Count | 108 | 112 | 3.7% |
| Per 100K | 0.04 | 0.04 | -6.3% |
Between the 2010 and 2020 Census, the number of Koschmann bearers went from 108 to 112 (+3.7% change). The surname moved up 3,578 positions in the national ranking, going from #151,532 to #147,954.
FAQ
Koschmann surname: questions and answers
How many people in the U.S. have the surname Koschmann?
Name Census estimates that about 128 living Americans carry the surname Koschmann. Using the current population baseline, that works out to roughly 1 in 2,677,768 residents.
How common is Koschmann?
Koschmann ranks #147,954 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 112 people with the surname Koschmann. That is different from the site's living-bearer estimate (128), 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 Koschmann.
Has Koschmann become more or less common over time?
Between 2010 and 2020, the surname Koschmann went from 108 recorded bearers to 112. That is an increase of 4 (+3.7%). In the national ranking it rose from #151,532 to #147,954.
What does the Census say about the background of Koschmann?
Among Census respondents with the surname Koschmann, the largest self-reported group is White at 98.2%. The next largest groups are Black (0.9%) and Asian/Pacific Islander (0.9%). 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 Koschmann in the 2020 Census, accounting for 98.2% (110 people in the source table).
What is the full ancestry breakdown?
Koschmann appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.2%), Black (0.9%), Asian/Pacific Islander (0.9%). 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 Koschmann (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 Koschmann mean?
A German surname derived from a regional 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 Koschmann (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 have the surname Koschmann?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.