2000
#115,489
National surname rank
Recorded bearers 140
First available Census row
Per 100,000 0.05
Very Rare Last name
Lenoch
A surname derived from the Czech word "lenoch" meaning lazy or idle person.
According to the 2020 US Census Bureau surname tables, roughly 126 Americans carry the last name Lenoch. That puts it at #149,446 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,720,273 residents).
This page is the full Name Census profile for the Lenoch 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
126
1 in 2,720,273
Census rank
#149,446
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
110
very rare in the US
Popularity narrative
The Census Bureau recorded 110 bearers of the surname Lenoch in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 149446th position in the national surname ranking.
Among Census respondents with the surname Lenoch, the largest self-reported group is White at 96.4%. The next largest groups are Two or More Races (1.8%) and Asian/Pacific Islander (0.9%).
Origin
Meaning and origin of Lenoch
The surname Lenoch has its origins in the Czech Republic, dating back to the 15th century. It is believed to be derived from the Czech word "lenoch," which means "lazy person" or "slacker."
The name was likely initially used as a nickname or a descriptive term for someone who was perceived as lazy or indolent. Over time, this nickname became a hereditary surname that was passed down through generations.
One of the earliest recorded instances of the name Lenoch can be found in the Bohemian land records from the late 15th century. These records mention a certain Jan Lenoch, a landowner from the village of Prachov in the Hradec Králové region.
During the 16th and 17th centuries, the surname Lenoch appeared in various historical documents across the Czech lands, such as tax registers, parish records, and court proceedings. Some notable individuals bearing this name during this period include Jakub Lenoch (1520-1589), a prominent merchant from Prague, and Barbora Lenochová (1612-1678), a landowner from the town of Kutná Hora.
In the 18th century, the Lenoch surname spread to neighboring regions, including parts of present-day Germany and Austria, as a result of migration and intermarriage. One noteworthy individual from this time was Johann Lenoch (1721-1789), a renowned clockmaker and watchmaker from the town of Eger (now Cheb, Czech Republic).
As the 19th century dawned, the Lenoch surname continued to be found across various parts of the Austro-Hungarian Empire. One prominent figure was Karel Lenoch (1825-1892), a Czech writer and journalist who played a significant role in the Czech National Revival movement.
Other notable individuals with the surname Lenoch throughout history include Václav Lenoch (1870-1936), a Czech painter and art teacher; Alois Lenoch (1905-1980), a renowned Czech architect; and Jiří Lenoch (1923-2003), a respected Czech actor and playwright.
Demographics
Ancestry and ethnicity for Lenoch
Among Census respondents with the surname Lenoch, the largest self-reported group is White at 96.4%. The next largest groups are Two or More Races (1.8%) and Asian/Pacific Islander (0.9%).
The bar chart below shows how Lenoch 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 Lenoch surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.4% · 106
- Two or more races1.8% · 2
- Asian and Pacific Islander0.9% · 1
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Lenoch
Lenoch 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
#138,304
National surname rank
Recorded bearers 121
-19 bearers (-13.6%)
Per 100,000 0.04
Rank movement Down 22,815 places
2020
#149,446
National surname rank
Recorded bearers 110
-11 bearers (-9.1%)
Per 100,000 0.04
Rank movement Down 11,142 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #115,489 | 140 | 0.05 | First available Census row | First available Census row |
| 2010 | #138,304 | 121 | 0.04 | -19 bearers (-13.6%) | Down 22,815 places |
| 2020 | #149,446 | 110 | 0.04 | -11 bearers (-9.1%) | Down 11,142 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 Lenoch 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 | #138,304 | #149,446 | -8.1% |
| Count | 121 | 110 | -9.1% |
| Per 100K | 0.04 | 0.04 | -8.0% |
Between the 2010 and 2020 Census, the number of Lenoch bearers went from 121 to 110 (-9.1% change). The surname moved down 11,142 positions in the national ranking, going from #138,304 to #149,446.
FAQ
Lenoch surname: questions and answers
How many people in the U.S. have the surname Lenoch?
Name Census estimates that about 126 living Americans carry the surname Lenoch. Using the current population baseline, that works out to roughly 1 in 2,720,273 residents.
How common is Lenoch?
Lenoch ranks #149,446 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 110 people with the surname Lenoch. That is different from the site's living-bearer estimate (126), 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 Lenoch.
Has Lenoch become more or less common over time?
Between 2010 and 2020, the surname Lenoch went from 121 recorded bearers to 110. That is a decrease of 11 (-9.1%). In the national ranking it fell from #138,304 to #149,446.
What does the Census say about the background of Lenoch?
Among Census respondents with the surname Lenoch, the largest self-reported group is White at 96.4%. The next largest groups are Two or More Races (1.8%) and Asian/Pacific Islander (0.9%). 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 Lenoch in the 2020 Census, accounting for 96.4% (106 people in the source table).
What is the full ancestry breakdown?
Lenoch appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.4%), Two or More Races (1.8%), Asian/Pacific Islander (0.9%). 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 Lenoch (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 Lenoch mean?
A surname derived from the Czech word "lenoch" meaning lazy or idle person. 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 Lenoch (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 Lenoch?
For a quick modern take, check how many Americans have the surname Lenoch on our sister site HowManyOfMe.org.