2010
#147,253
National surname rank
Recorded bearers 112
First available Census row
Per 100,000 0.04
Very Rare Last name
Flentroy
An English surname derived from a place name, possibly meaning "flint stream meadow".
According to the 2020 US Census Bureau surname tables, roughly 123 Americans carry the last name Flentroy. That puts it at #151,639 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,786,621 residents).
This page is the full Name Census profile for the Flentroy 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
123
1 in 2,786,621
Census rank
#151,639
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
107
very rare in the US
Popularity narrative
The Census Bureau recorded 107 bearers of the surname Flentroy in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 151639th position in the national surname ranking.
Among Census respondents with the surname Flentroy, the largest self-reported group is Black at 86.9%. The next largest groups are Hispanic (7.5%) and Two or More Races (2.8%).
Origin
Meaning and origin of Flentroy
The surname Flentroy has its origins in the northern regions of France, specifically in the areas around Normandy and Brittany. It is believed to have emerged during the 11th century, with the earliest records dating back to around 1050 CE. The name is thought to be derived from the Old French words "flent," meaning "arrow" or "dart," and "roi," meaning "king" or "ruler."
One of the earliest known references to the name Flentroy can be found in the Domesday Book, a comprehensive record of landholdings and estates compiled in 1086 CE by order of William the Conqueror. The entry mentions a landowner named Raoul Flentroy, who held properties in the county of Lincolnshire, England.
In the 13th century, a notable figure bearing the name Flentroy was Sir Robert Flentroy, a knight who fought alongside King Edward I during the Scottish Wars of Independence. He was born in 1275 and died in 1314 at the Battle of Bannockburn.
Another historical figure with the surname Flentroy was Jean Flentroy, a French explorer and cartographer who accompanied Jacques Cartier on his expeditions to the New World in the 16th century. He was instrumental in mapping the St. Lawrence River and the surrounding areas, and his detailed charts were invaluable to later explorers and settlers.
In the 17th century, a branch of the Flentroy family settled in the Netherlands, where they became prominent merchants and traders. One member of this branch, Willem Flentroy, was a wealthy businessman who played a significant role in the Dutch East India Company's operations in Southeast Asia during the 1650s.
A more recent example is Marie-Louise Flentroy, a French novelist and playwright who lived from 1789 to 1865. She was known for her romantic novels and historical dramas, many of which were inspired by the tumultuous events of the French Revolution and the Napoleonic era.
Throughout its history, the surname Flentroy has undergone various spelling variations, including Flentroye, Flentroix, and Flentroix. The name has also been associated with several place names, such as Flentroy-sur-Mer in Normandy and Flentroy-le-Château in Brittany, further reinforcing its French roots.
Demographics
Ancestry and ethnicity for Flentroy
Among Census respondents with the surname Flentroy, the largest self-reported group is Black at 86.9%. The next largest groups are Hispanic (7.5%) and Two or More Races (2.8%).
The bar chart below shows how Flentroy 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 Flentroy surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American86.9% · 93
- Hispanic or Latino7.5% · 8
- Two or more races2.8% · 3
- White0.9% · 1
- Asian and Pacific Islander0.9% · 1
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Flentroy
Flentroy 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
#151,639
National surname rank
Recorded bearers 107
-5 bearers (-4.5%)
Per 100,000 0.04
Rank movement Down 4,386 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #147,253 | 112 | 0.04 | First available Census row | First available Census row |
| 2020 | #151,639 | 107 | 0.04 | -5 bearers (-4.5%) | Down 4,386 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 Flentroy 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 | #147,253 | #151,639 | -3.0% |
| Count | 112 | 107 | -4.5% |
| Per 100K | 0.04 | 0.04 | -10.5% |
Between the 2010 and 2020 Census, the number of Flentroy bearers went from 112 to 107 (-4.5% change). The surname moved down 4,386 positions in the national ranking, going from #147,253 to #151,639.
FAQ
Flentroy surname: questions and answers
How many people in the U.S. have the surname Flentroy?
Name Census estimates that about 123 living Americans carry the surname Flentroy. Using the current population baseline, that works out to roughly 1 in 2,786,621 residents.
How common is Flentroy?
Flentroy ranks #151,639 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 107 people with the surname Flentroy. That is different from the site's living-bearer estimate (123), 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 Flentroy.
Has Flentroy become more or less common over time?
Between 2010 and 2020, the surname Flentroy went from 112 recorded bearers to 107. That is a decrease of 5 (-4.5%). In the national ranking it fell from #147,253 to #151,639.
What does the Census say about the background of Flentroy?
Among Census respondents with the surname Flentroy, the largest self-reported group is Black at 86.9%. The next largest groups are Hispanic (7.5%) and Two or More Races (2.8%). 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?
Black is the largest self-reported group for the surname Flentroy in the 2020 Census, accounting for 86.9% (93 people in the source table).
What is the full ancestry breakdown?
Flentroy appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (86.9%), Hispanic (7.5%), Two or More Races (2.8%). 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 Flentroy (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 Flentroy mean?
An English surname derived from a place name, possibly meaning "flint stream meadow". 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 Flentroy (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 common is the surname Flentroy?
Our sister site HowManyOfMe.org answers how many Americans have the surname Flentroy at a glance, with the living-bearer count up front.