2000
#132,259
National surname rank
Recorded bearers 118
First available Census row
Per 100,000 0.04
Very Rare Last name
Masenheimer
A locational German surname derived from a place name containing the elements moos (marsh/bog) and heim (home/settlement).
According to the 2020 US Census Bureau surname tables, roughly 136 Americans carry the last name Masenheimer. 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 Masenheimer 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 Masenheimer 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 Masenheimer, the largest self-reported group is White at 89.9%. The next largest groups are Two or More Races (7.6%) and Black (0.8%).
Origin
Meaning and origin of Masenheimer
The surname Masenheimer originated in Germany, likely in the late medieval period around the 13th or 14th century. It is believed to have derived from a Middle High German word "masen," which referred to a spot or blemish, and the word "heim," meaning home or dwelling. This suggests that the name may have initially referred to someone who lived in a house or village marked by a distinctive spot or location.
One of the earliest recorded instances of the name Masenheimer can be found in the records of the town of Heilbronn, located in the southwestern region of Germany, where a family by the name of Masenheimer is mentioned in the 15th century. The name also appears in other historical documents from various regions of Germany during the 16th and 17th centuries.
One notable individual with the surname Masenheimer was Johann Georg Masenheimer, a German painter and engraver who lived in the 17th century (born around 1650, died in 1720). His works, particularly his engravings, can be found in various collections and museums across Europe.
Another historical figure with this surname was Friedrich Masenheimer, a German philosopher and theologian who lived in the 18th century (born in 1712, died in 1788). He was known for his writings on ethics and moral philosophy, which were influential in his time.
In the 19th century, a prominent individual bearing the name Masenheimer was Karl Masenheimer, a German architect and urban planner (born in 1835, died in 1901). He was responsible for the design and construction of several notable buildings and urban developments in various German cities.
The name Masenheimer can also be traced back to various place names and older spellings of locations in Germany, such as Masenheim, Masenhausen, and Masenhofen, which may have contributed to the development of the surname over time.
It is worth noting that the surname Masenheimer, while not among the most common German surnames, has a rich historical background and can be found scattered throughout various regions of Germany, particularly in the southern and southwestern areas.
Demographics
Ancestry and ethnicity for Masenheimer
Among Census respondents with the surname Masenheimer, the largest self-reported group is White at 89.9%. The next largest groups are Two or More Races (7.6%) and Black (0.8%).
The bar chart below shows how Masenheimer 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 Masenheimer surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.9% · 107
- Two or more races7.6% · 9
- Black or African American0.8% · 1
- Asian and Pacific Islander0.8% · 1
- American Indian and Alaska Native0.8% · 1
Timeline
Historical Census data for Masenheimer
Masenheimer 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
#132,206
National surname rank
Recorded bearers 128
+10 bearers (+8.5%)
Per 100,000 0.04
Rank movement Up 53 places
2020
#142,788
National surname rank
Recorded bearers 119
-9 bearers (-7.0%)
Per 100,000 0.04
Rank movement Down 10,582 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 | #132,206 | 128 | 0.04 | +10 bearers (+8.5%) | Up 53 places |
| 2020 | #142,788 | 119 | 0.04 | -9 bearers (-7.0%) | Down 10,582 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 Masenheimer 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 | #132,206 | #142,788 | -8.0% |
| Count | 128 | 119 | -7.0% |
| Per 100K | 0.04 | 0.04 | -0.5% |
Between the 2010 and 2020 Census, the number of Masenheimer bearers went from 128 to 119 (-7.0% change). The surname moved down 10,582 positions in the national ranking, going from #132,206 to #142,788.
FAQ
Masenheimer surname: questions and answers
How many people in the U.S. have the surname Masenheimer?
Name Census estimates that about 136 living Americans carry the surname Masenheimer. Using the current population baseline, that works out to roughly 1 in 2,520,252 residents.
How common is Masenheimer?
Masenheimer 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 Masenheimer. 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 Masenheimer.
Has Masenheimer become more or less common over time?
Between 2010 and 2020, the surname Masenheimer went from 128 recorded bearers to 119. That is a decrease of 9 (-7.0%). In the national ranking it fell from #132,206 to #142,788.
What does the Census say about the background of Masenheimer?
Among Census respondents with the surname Masenheimer, the largest self-reported group is White at 89.9%. The next largest groups are Two or More Races (7.6%) and Black (0.8%). 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 Masenheimer in the 2020 Census, accounting for 89.9% (107 people in the source table).
What is the full ancestry breakdown?
Masenheimer appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.9%), Two or More Races (7.6%), Black (0.8%). 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 Masenheimer (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 Masenheimer mean?
A locational German surname derived from a place name containing the elements moos (marsh/bog) and heim (home/settlement). 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 Masenheimer (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 share the surname Masenheimer?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.