2000
#74,164
National surname rank
Recorded bearers 243
First available Census row
Per 100,000 0.09
Very Rare Last name
Mazerolle
A locational surname from places in France named Mazerolle.
According to the 2020 US Census Bureau surname tables, roughly 269 Americans carry the last name Mazerolle. That puts it at #85,600 in the national surname ranking, appearing at a frequency of 0.08 per 100,000 people (about 1 in 1,274,180 residents).
This page is the full Name Census profile for the Mazerolle 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
269
1 in 1,274,180
Census rank
#85,600
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
235
very rare in the US
Popularity narrative
The Census Bureau recorded 235 bearers of the surname Mazerolle in its 2020 decennial surname file. At a rate of 0.08 per 100,000 residents, it holds the 85600th position in the national surname ranking.
Among Census respondents with the surname Mazerolle, the largest self-reported group is White at 90.2%. The next largest groups are Hispanic (5.5%) and Two or More Races (4.3%).
Origin
Meaning and origin of Mazerolle
The surname Mazerolle has its origins in France, specifically in the Poitou-Charentes region. It is believed to have emerged sometime in the 12th or 13th century. The name is derived from the Old French word "mazerol," which referred to a small stream or brook.
One of the earliest recorded instances of the surname Mazerolle can be found in the census records of the town of Melle, located in the department of Deux-Sèvres. The name appears in these records dating back to the late 13th century, suggesting that the family may have been among the early settlers in the region.
In the 16th century, there are references to a prominent Mazerolle family in the town of Lusignan, also in the Poitou-Charentes region. It is said that this family played a significant role in the local politics and administration of the town during that time.
During the French Revolution, a notable figure with the surname Mazerolle was Jean-Baptiste Mazerolle, born in 1768 in Poitiers. He was a prominent lawyer and politician who served as a deputy in the National Convention during the revolutionary period.
Another notable individual with the surname Mazerolle was François Mazerolle, born in 1859 in Paris. He was a renowned sculptor and medallist, known for his works commissioned by the French government and various institutions.
In the 20th century, a prominent figure with the surname Mazerolle was Fernand Mazerolle, born in 1878 in Bordeaux. He was a respected historian and archivist who made significant contributions to the study of French history, particularly in the fields of numismatics and sigillography.
It is worth noting that there are variations in the spelling of the surname, such as Mazerolles and Mazerolle, which may have emerged as a result of regional differences or transcription errors over time.
While the surname Mazerolle is not among the most common in France, it has a rich history and has been associated with notable individuals in various fields throughout the centuries, particularly in the regions of Poitou-Charentes and surrounding areas.
Demographics
Ancestry and ethnicity for Mazerolle
Among Census respondents with the surname Mazerolle, the largest self-reported group is White at 90.2%. The next largest groups are Hispanic (5.5%) and Two or More Races (4.3%).
The bar chart below shows how Mazerolle 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 Mazerolle surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.2% · 212
- Hispanic or Latino5.5% · 13
- Two or more races4.3% · 10
Timeline
Historical Census data for Mazerolle
Mazerolle 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
#77,788
National surname rank
Recorded bearers 246
+3 bearers (+1.2%)
Per 100,000 0.08
Rank movement Down 3,624 places
2020
#85,600
National surname rank
Recorded bearers 235
-11 bearers (-4.5%)
Per 100,000 0.08
Rank movement Down 7,812 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #74,164 | 243 | 0.09 | First available Census row | First available Census row |
| 2010 | #77,788 | 246 | 0.08 | +3 bearers (+1.2%) | Down 3,624 places |
| 2020 | #85,600 | 235 | 0.08 | -11 bearers (-4.5%) | Down 7,812 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 Mazerolle 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 | #77,788 | #85,600 | -10.0% |
| Count | 246 | 235 | -4.5% |
| Per 100K | 0.08 | 0.08 | -1.7% |
Between the 2010 and 2020 Census, the number of Mazerolle bearers went from 246 to 235 (-4.5% change). The surname moved down 7,812 positions in the national ranking, going from #77,788 to #85,600.
FAQ
Mazerolle surname: questions and answers
How many people in the U.S. have the surname Mazerolle?
Name Census estimates that about 269 living Americans carry the surname Mazerolle. Using the current population baseline, that works out to roughly 1 in 1,274,180 residents.
How common is Mazerolle?
Mazerolle ranks #85,600 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.08 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 235 people with the surname Mazerolle. That is different from the site's living-bearer estimate (269), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.08 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.08 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 Mazerolle.
Has Mazerolle become more or less common over time?
Between 2010 and 2020, the surname Mazerolle went from 246 recorded bearers to 235. That is a decrease of 11 (-4.5%). In the national ranking it fell from #77,788 to #85,600.
What does the Census say about the background of Mazerolle?
Among Census respondents with the surname Mazerolle, the largest self-reported group is White at 90.2%. The next largest groups are Hispanic (5.5%) and Two or More Races (4.3%). 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 Mazerolle in the 2020 Census, accounting for 90.2% (212 people in the source table).
What is the full ancestry breakdown?
Mazerolle appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.2%), Hispanic (5.5%), Two or More Races (4.3%). 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 Mazerolle (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 Mazerolle mean?
A locational surname from places in France named Mazerolle. 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 Mazerolle (0.08 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 Mazerolle?
Want to know how many people are called Mazerolle? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.