2000
#133,114
National surname rank
Recorded bearers 117
First available Census row
Per 100,000 0.04
Very Rare Last name
Isemann
A German surname referring to a person from the Iser region.
According to the 2020 US Census Bureau surname tables, roughly 128 Americans carry the last name Isemann. 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 Isemann 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 Isemann 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 Isemann, the largest self-reported group is White at 92.0%. The next largest groups are Hispanic (4.5%) and Asian/Pacific Islander (1.8%).
Origin
Meaning and origin of Isemann
The surname ISEMANN is of German origin, with its roots traced back to the Middle Ages. It is believed to have originated in the regions of Bavaria and Saxony, where the earliest recorded instances of the name can be found.
The name ISEMANN is derived from the Old German word "isarn," meaning "iron" or "ironworker." This suggests that the name was initially associated with individuals who worked as blacksmiths, metalworkers, or in other iron-related trades. The addition of the suffix "-mann" further reinforces the occupational connection, translating to "man" or "person."
One of the earliest known references to the name ISEMANN can be found in the German town of Jena, where a document from the late 13th century mentions a certain "Heinrich Isemann." This indicates that the name was already in use by that time and likely had been established for generations prior.
In the 14th century, the name ISEMANN appeared in various records across Germany, including the "Württembergisches Urkundenbuch" (Württemberg Book of Deeds) from 1364, which mentions a "Cunrat Iseman." This suggests that the name had spread to different regions of the country by that point.
One notable historical figure bearing the surname ISEMANN was Johann Isemann (1546-1604), a German theologian and professor at the University of Rostock. His contributions to the field of theology and his academic work helped establish the ISEMANN name among scholarly circles.
Another prominent individual was Wilhelm Isemann (1677-1746), a German architect and builder who was responsible for the construction of several notable buildings in the city of Hannover, including the Schloss Herrenhausen and the Neustädter Kirche.
In the 18th century, the ISEMANN name gained further recognition with the birth of Johann Christoph Isemann (1747-1827), a German painter and engraver known for his landscape works and historical scenes. His artistic legacy helped cement the ISEMANN name in the annals of German cultural history.
During the 19th century, the surname ISEMANN continued to be associated with accomplished individuals, such as Carl Isemann (1820-1892), a German politician and lawyer who served as a member of the Reichstag (German Parliament) in the late 1800s.
While the name ISEMANN has its roots in Germany, it has since spread to other parts of the world through immigration and migration patterns. However, its historical origins and connections to the ironworking trade and notable figures remain an integral part of its rich heritage.
Demographics
Ancestry and ethnicity for Isemann
Among Census respondents with the surname Isemann, the largest self-reported group is White at 92.0%. The next largest groups are Hispanic (4.5%) and Asian/Pacific Islander (1.8%).
The bar chart below shows how Isemann 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 Isemann surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.0% · 103
- Hispanic or Latino4.5% · 5
- Asian and Pacific Islander1.8% · 2
- Two or more races1.8% · 2
Timeline
Historical Census data for Isemann
Isemann 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
#131,379
National surname rank
Recorded bearers 129
+12 bearers (+10.3%)
Per 100,000 0.04
Rank movement Up 1,735 places
2020
#147,954
National surname rank
Recorded bearers 112
-17 bearers (-13.2%)
Per 100,000 0.04
Rank movement Down 16,575 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #133,114 | 117 | 0.04 | First available Census row | First available Census row |
| 2010 | #131,379 | 129 | 0.04 | +12 bearers (+10.3%) | Up 1,735 places |
| 2020 | #147,954 | 112 | 0.04 | -17 bearers (-13.2%) | Down 16,575 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 Isemann 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 | #131,379 | #147,954 | -12.6% |
| Count | 129 | 112 | -13.2% |
| Per 100K | 0.04 | 0.04 | -6.3% |
Between the 2010 and 2020 Census, the number of Isemann bearers went from 129 to 112 (-13.2% change). The surname moved down 16,575 positions in the national ranking, going from #131,379 to #147,954.
FAQ
Isemann surname: questions and answers
How many people in the U.S. have the surname Isemann?
Name Census estimates that about 128 living Americans carry the surname Isemann. Using the current population baseline, that works out to roughly 1 in 2,677,768 residents.
How common is Isemann?
Isemann 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 Isemann. 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 Isemann.
Has Isemann become more or less common over time?
Between 2010 and 2020, the surname Isemann went from 129 recorded bearers to 112. That is a decrease of 17 (-13.2%). In the national ranking it fell from #131,379 to #147,954.
What does the Census say about the background of Isemann?
Among Census respondents with the surname Isemann, the largest self-reported group is White at 92.0%. The next largest groups are Hispanic (4.5%) and Asian/Pacific Islander (1.8%). 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 Isemann in the 2020 Census, accounting for 92.0% (103 people in the source table).
What is the full ancestry breakdown?
Isemann appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.0%), Hispanic (4.5%), Asian/Pacific Islander (1.8%). 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 Isemann (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 Isemann mean?
A German surname referring to a person from the Iser region. 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 Isemann (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 Isemann?
Find out how many people have the surname Isemann on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.