2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Demunck
A surname of Dutch origin referring to a monk or monastic servant.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Demunck. That puts it at #154,182 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,904,698 residents).
This page is the full Name Census profile for the Demunck 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
118
1 in 2,904,698
Census rank
#154,182
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
103
very rare in the US
Popularity narrative
The Census Bureau recorded 103 bearers of the surname Demunck in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154182nd position in the national surname ranking.
Among Census respondents with the surname Demunck, the largest self-reported group is White at 94.2%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.9%).
Origin
Meaning and origin of Demunck
The surname DEMUNCK originated in the Netherlands during the late medieval period, likely in the 13th or 14th century. It is derived from the Dutch word "munck," which means "monk." The prefix "de" simply means "the" in Dutch. Thus, the surname DEMUNCK likely referred to someone who lived near a monastery or had some association with monks.
One of the earliest recorded instances of the name DEMUNCK appears in a Dutch census record from the city of Leiden in 1387, where a certain Willem DEMUNCK is listed as a resident. This suggests that the name had already been in use for some time by the late 14th century.
In the 15th century, the DEMUNCK surname appears in various records from the Netherlands and parts of modern-day Belgium. For example, a Jacob DEMUNCK is mentioned in a 1467 record from the town of Middelburg, Zeeland.
Over the centuries, the surname underwent various spelling variations, including DEMUNC, DEMUNCKE, and DEMUYNCK, reflecting the fluid nature of surname spellings before they became standardized.
One notable historical figure with the surname DEMUNCK was Pieter DEMUNCK (1605-1667), a Dutch Golden Age painter and printmaker from Haarlem. His works often depicted scenes of everyday life and are held in various museum collections.
Another individual of note was Johanna DEMUNCK (1732-1811), a Dutch painter and engraver from Rotterdam. She is particularly known for her landscape paintings and portraits.
In the 19th century, a Cornelius DEMUNCK (1818-1892) was a prominent businessman and landowner in the Dutch East Indies (present-day Indonesia). He was involved in the cultivation of coffee and other agricultural exports.
The DEMUNCK name also spread beyond the Netherlands, with some bearers migrating to other parts of Europe and later to the Americas. For instance, a Jacques DEMUNCK (1782-1856) was a French military officer who served under Napoleon Bonaparte and participated in various campaigns across Europe.
Finally, one of the more recent historical figures with the surname was Pieter DEMUNCK (1892-1965), a Belgian politician and lawyer who served as the mayor of Ghent from 1947 to 1958.
Demographics
Ancestry and ethnicity for Demunck
Among Census respondents with the surname Demunck, the largest self-reported group is White at 94.2%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.9%).
The bar chart below shows how Demunck 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 Demunck surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.2% · 97
- Two or more races2.9% · 3
- Hispanic or Latino1.9% · 2
- American Indian and Alaska Native1.0% · 1
Timeline
Historical Census data for Demunck
Demunck 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
#128,249
National surname rank
Recorded bearers 133
+20 bearers (+17.7%)
Per 100,000 0.05
Rank movement Up 8,534 places
2020
#154,182
National surname rank
Recorded bearers 103
-30 bearers (-22.6%)
Per 100,000 0.03
Rank movement Down 25,933 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #128,249 | 133 | 0.05 | +20 bearers (+17.7%) | Up 8,534 places |
| 2020 | #154,182 | 103 | 0.03 | -30 bearers (-22.6%) | Down 25,933 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 Demunck 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 | #128,249 | #154,182 | -20.2% |
| Count | 133 | 103 | -22.6% |
| Per 100K | 0.05 | 0.03 | -31.1% |
Between the 2010 and 2020 Census, the number of Demunck bearers went from 133 to 103 (-22.6% change). The surname moved down 25,933 positions in the national ranking, going from #128,249 to #154,182.
FAQ
Demunck surname: questions and answers
How many people in the U.S. have the surname Demunck?
Name Census estimates that about 118 living Americans carry the surname Demunck. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Demunck?
Demunck ranks #154,182 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 103 people with the surname Demunck. That is different from the site's living-bearer estimate (118), 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 Demunck.
Has Demunck become more or less common over time?
Between 2010 and 2020, the surname Demunck went from 133 recorded bearers to 103. That is a decrease of 30 (-22.6%). In the national ranking it fell from #128,249 to #154,182.
What does the Census say about the background of Demunck?
Among Census respondents with the surname Demunck, the largest self-reported group is White at 94.2%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.9%). 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 Demunck in the 2020 Census, accounting for 94.2% (97 people in the source table).
What is the full ancestry breakdown?
Demunck appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.2%), Two or More Races (2.9%), Hispanic (1.9%). 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 Demunck (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 Demunck mean?
A surname of Dutch origin referring to a monk or monastic servant. 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 Demunck (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 people have the last name Demunck?
If you just want to know how many people have the last name Demunck, HowManyOfMe.org gives you the headline number in one glance.