2000
#12,682
National surname rank
Recorded bearers 2,237
First available Census row
Per 100,000 0.83
Rare Last name
Krumm
Derived from the Middle High German word "krum," meaning crooked or bent, likely referring to a hunched posture.
According to the 2020 US Census Bureau surname tables, roughly 2,348 Americans carry the last name Krumm. That puts it at #14,076 in the national surname ranking, appearing at a frequency of 0.69 per 100,000 people (about 1 in 145,977 residents).
This page is the full Name Census profile for the Krumm 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
2.3K
1 in 145,977
Census rank
#14,076
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.0K
rare in the US
Popularity narrative
The Census Bureau recorded 2,048 bearers of the surname Krumm in its 2020 decennial surname file. At a rate of 0.69 per 100,000 residents, it holds the 14076th position in the national surname ranking.
Among Census respondents with the surname Krumm, the largest self-reported group is White at 91.3%. The next largest groups are Hispanic (3.8%) and Two or More Races (3.0%).
Origin
Meaning and origin of Krumm
The surname KRUMM is of German origin, derived from the Middle High German word "krump" or "krumm," which means "curved" or "bent." This name likely originated as a descriptive nickname for someone with a physical characteristic or occupation related to crooked or curved objects.
The earliest recorded instances of the KRUMM surname can be traced back to the 13th and 14th centuries in various regions of Germany, including Bavaria, Saxony, and Silesia. It is believed to have originated as a occupational name for a maker or seller of crooked objects, such as hooks, canes, or other curved implements.
In the 15th century, the name KRUMM appeared in the Kaufbücher, or merchant books, of the city of Mainz, indicating the presence of individuals with this surname in urban centers of medieval Germany.
One notable historical figure with the KRUMM surname was Johann Krumm (1505-1569), a German theologian and reformer who was a follower of Martin Luther and played a role in the Protestant Reformation.
Another individual of note was Johann Michael Krumm (1783-1857), a German composer and conductor who served as the Kapellmeister (music director) at the court of the Prince-Elector of Bavaria.
In the 19th century, the KRUMM surname was also found in the United States, with one notable bearer being John Krumm (1833-1902), a German immigrant who became a prominent businessman and politician in Milwaukee, Wisconsin.
The KRUMM surname has also been connected to various place names in Germany, such as Krummbach, a town in Bavaria, and Krummendorf, a village in Saxony-Anhalt, suggesting that some bearers of the name may have originated from or been associated with these locations.
Another individual of note was Friedrich Krumm (1891-1965), a German architect and urban planner who designed several notable buildings in Berlin and other cities during the early 20th century.
While the KRUMM surname is not among the most common in Germany or other German-speaking regions, it has maintained a presence throughout history and can be traced back to its origins as a descriptive name related to curved or crooked objects.
Demographics
Ancestry and ethnicity for Krumm
Among Census respondents with the surname Krumm, the largest self-reported group is White at 91.3%. The next largest groups are Hispanic (3.8%) and Two or More Races (3.0%).
The bar chart below shows how Krumm 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 Krumm surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.3% · 1,870
- Hispanic or Latino3.8% · 77
- Two or more races3.0% · 61
- Asian and Pacific Islander1.2% · 25
- Black or African American0.5% · 10
- American Indian and Alaska Native0.2% · 5
Timeline
Historical Census data for Krumm
Krumm 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
#13,531
National surname rank
Recorded bearers 2,242
+5 bearers (+0.2%)
Per 100,000 0.76
Rank movement Down 849 places
2020
#14,076
National surname rank
Recorded bearers 2,048
-194 bearers (-8.7%)
Per 100,000 0.69
Rank movement Down 545 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #12,682 | 2,237 | 0.83 | First available Census row | First available Census row |
| 2010 | #13,531 | 2,242 | 0.76 | +5 bearers (+0.2%) | Down 849 places |
| 2020 | #14,076 | 2,048 | 0.69 | -194 bearers (-8.7%) | Down 545 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 Krumm 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 | #13,531 | #14,076 | -4.0% |
| Count | 2,242 | 2,048 | -8.7% |
| Per 100K | 0.76 | 0.69 | -9.8% |
Between the 2010 and 2020 Census, the number of Krumm bearers went from 2,242 to 2,048 (-8.7% change). The surname moved down 545 positions in the national ranking, going from #13,531 to #14,076.
FAQ
Krumm surname: questions and answers
How many people in the U.S. have the surname Krumm?
Name Census estimates that about 2,348 living Americans carry the surname Krumm. Using the current population baseline, that works out to roughly 1 in 145,977 residents.
How common is Krumm?
Krumm ranks #14,076 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.69 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,048 people with the surname Krumm. That is different from the site's living-bearer estimate (2,348), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.69 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.69 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Krumm.
Has Krumm become more or less common over time?
Between 2010 and 2020, the surname Krumm went from 2,242 recorded bearers to 2,048. That is a decrease of 194 (-8.7%). In the national ranking it fell from #13,531 to #14,076.
What does the Census say about the background of Krumm?
Among Census respondents with the surname Krumm, the largest self-reported group is White at 91.3%. The next largest groups are Hispanic (3.8%) and Two or More Races (3.0%). 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 Krumm in the 2020 Census, accounting for 91.3% (1,870 people in the source table).
What is the full ancestry breakdown?
Krumm appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.3%), Hispanic (3.8%), Two or More Races (3.0%). 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 Krumm (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 Krumm mean?
Derived from the Middle High German word "krum," meaning crooked or bent, likely referring to a hunched posture. 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 Krumm (0.69 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 Americans have the surname Krumm?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.