2010
#158,432
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.03
Very Rare Last name
Krummenacher
A habitational surname derived from the Swiss place name Krummenau, meaning "crooked stream".
According to the 2020 US Census Bureau surname tables, roughly 136 Americans carry the last name Krummenacher. 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 Krummenacher 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 Krummenacher 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 Krummenacher, the largest self-reported group is White at 89.1%. The next largest groups are Hispanic (4.2%) and Two or More Races (4.2%).
Origin
Meaning and origin of Krummenacher
The surname Krummenacher originated in the German-speaking regions of Switzerland, particularly in the canton of Bern. It is a topographic name, derived from the Middle High German words "krumme" (meaning "crooked" or "bent") and "acher" (meaning "field" or "acre"). This suggests that the name was likely adopted by someone who lived near a crooked field or an irregularly shaped plot of land.
The earliest known record of the name Krummenacher dates back to the 14th century, appearing in various forms such as Krummenacher, Krummenacker, and Krummenagker. One notable historical reference is found in the Bernese Chronicle, a medieval chronicle compiled in the 15th century, which mentions a certain Ulrich Krummenacher from the town of Bern.
In the 16th century, the surname Krummenacher was documented in the Reformation-era records of Bern, where several individuals bearing this name were mentioned as citizens of the city. One prominent figure was Hans Krummenacher (1507-1571), a Protestant reformer and theologian who played a role in the Swiss Reformation.
During the 17th and 18th centuries, the Krummenacher family spread to other parts of Switzerland and beyond. Johann Rudolf Krummenacher (1662-1736) was a Swiss theologian and author who served as a pastor in the city of Lenzburg. Another notable bearer of the name was Johann Jakob Krummenacher (1711-1785), a Swiss politician and judge who served as the mayor of Thun.
In the 19th century, the Krummenacher surname gained international recognition through the works of Johann Melchior Krummenacher (1793-1857), a Swiss writer and educator who authored several popular children's books and educational works. His most famous work, "Der Schweizerische Robinson" (The Swiss Family Robinson), was published in 1813 and later adapted into various films and television series.
Other notable individuals with the surname Krummenacher include Hermann Krummenacher (1855-1928), a Swiss architect and urban planner who designed several notable buildings in Basel, and Walter Krummenacher (1902-1984), a Swiss painter and graphic artist known for his expressionist works and woodcut prints.
Demographics
Ancestry and ethnicity for Krummenacher
Among Census respondents with the surname Krummenacher, the largest self-reported group is White at 89.1%. The next largest groups are Hispanic (4.2%) and Two or More Races (4.2%).
The bar chart below shows how Krummenacher 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 Krummenacher surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.1% · 106
- Hispanic or Latino4.2% · 5
- Two or more races4.2% · 5
- Asian and Pacific Islander1.7% · 2
- Black or African American0.8% · 1
Timeline
Historical Census data for Krummenacher
Krummenacher 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
#142,788
National surname rank
Recorded bearers 119
+17 bearers (+16.7%)
Per 100,000 0.04
Rank movement Up 15,644 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #158,432 | 102 | 0.03 | First available Census row | First available Census row |
| 2020 | #142,788 | 119 | 0.04 | +17 bearers (+16.7%) | Up 15,644 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 Krummenacher 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 | #158,432 | #142,788 | 9.9% |
| Count | 102 | 119 | 16.7% |
| Per 100K | 0.03 | 0.04 | 32.7% |
Between the 2010 and 2020 Census, the number of Krummenacher bearers went from 102 to 119 (+16.7% change). The surname moved up 15,644 positions in the national ranking, going from #158,432 to #142,788.
FAQ
Krummenacher surname: questions and answers
How many people in the U.S. have the surname Krummenacher?
Name Census estimates that about 136 living Americans carry the surname Krummenacher. Using the current population baseline, that works out to roughly 1 in 2,520,252 residents.
How common is Krummenacher?
Krummenacher 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 Krummenacher. 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 Krummenacher.
Has Krummenacher become more or less common over time?
Between 2010 and 2020, the surname Krummenacher went from 102 recorded bearers to 119. That is an increase of 17 (+16.7%). In the national ranking it rose from #158,432 to #142,788.
What does the Census say about the background of Krummenacher?
Among Census respondents with the surname Krummenacher, the largest self-reported group is White at 89.1%. The next largest groups are Hispanic (4.2%) and Two or More Races (4.2%). 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 Krummenacher in the 2020 Census, accounting for 89.1% (106 people in the source table).
What is the full ancestry breakdown?
Krummenacher appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.1%), Hispanic (4.2%), Two or More Races (4.2%). 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 Krummenacher (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 Krummenacher mean?
A habitational surname derived from the Swiss place name Krummenau, meaning "crooked stream". 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 Krummenacher (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 Krummenacher?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.