2010
#151,532
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Lemasurier
A surname denoting someone who lived in a small house or cottage.
According to the 2020 US Census Bureau surname tables, roughly 116 Americans carry the last name Lemasurier. That puts it at #155,270 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,954,779 residents).
This page is the full Name Census profile for the Lemasurier 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.
For British records, Name Census UK has a British surname profile for Lemasurier with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
116
1 in 2,954,779
Census rank
#155,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
101
very rare in the US
Popularity narrative
The Census Bureau recorded 101 bearers of the surname Lemasurier in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155270th position in the national surname ranking.
Among Census respondents with the surname Lemasurier, the largest self-reported group is White at 92.1%. The next largest groups are Hispanic (5.9%) and Two or More Races (2.0%).
Origin
Meaning and origin of Lemasurier
The surname LEMASURIER originates from the Channel Islands, a group of islands located off the coast of Normandy, France. The name is believed to have originated in the 11th or 12th century and is derived from the Old French words "le" meaning "the" and "masurier" meaning "mason" or "builder of stone houses."
In the early records of the Channel Islands, the name appears spelled in various ways, such as Le Masurier, Le Massurier, and Le Maçurier. One of the earliest recorded instances of the name is found in the Assize Roll of the Channel Islands from 1309, where the name is listed as "Le Masurier."
The LEMASURIER name is closely associated with the history and culture of the Channel Islands, particularly Jersey and Guernsey. Many families with this surname can trace their roots back to these islands for centuries. The name is often found in historical records and documents related to the Channel Islands, such as parish registers, land records, and legal documents.
One notable individual with the LEMASURIER surname was John LEMASURIER (1756-1829), a prominent merchant and landowner in Jersey. He was involved in the island's government and held various positions, including Constable of St. Helier and Jurat of the Royal Court of Jersey.
Another prominent figure was Sir John LEMASURIER (1808-1884), a British army officer and colonial administrator. He served as the Lieutenant Governor of Malta from 1858 to 1864 and was later appointed as the Governor of Newfoundland, serving from 1864 to 1869.
In the late 18th and early 19th centuries, some members of the LEMASURIER family emigrated from the Channel Islands to other parts of the world, including Australia and North America. One such individual was Havilland LEMASURIER (1789-1864), who settled in New South Wales, Australia, in the early 1800s and became a prominent landowner and merchant.
The LEMASURIER surname can also be found in historical records related to the island of Jersey, such as the Extente of Jersey from 1337, which lists several individuals with the name. Additionally, the name appears in the Livre des Bourgeoisies de St.-Pierre-Port from the 15th century, a record of the burgesses (citizens) of the town of St. Peter Port in Guernsey.
Another notable figure was Philip LEMASURIER (1831-1903), a British sculptor and artist who was born in Jersey. He is known for his sculptures and architectural decorations found in various buildings throughout London and other parts of England.
Throughout its history, the LEMASURIER surname has been associated with various notable individuals and families from the Channel Islands and beyond, reflecting its deep roots and connections to the region's culture and heritage.
Demographics
Ancestry and ethnicity for Lemasurier
Among Census respondents with the surname Lemasurier, the largest self-reported group is White at 92.1%. The next largest groups are Hispanic (5.9%) and Two or More Races (2.0%).
The bar chart below shows how Lemasurier 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 Lemasurier surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.1% · 93
- Hispanic or Latino5.9% · 6
- Two or more races2.0% · 2
Timeline
Historical Census data for Lemasurier
Lemasurier 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
#155,270
National surname rank
Recorded bearers 101
-7 bearers (-6.5%)
Per 100,000 0.03
Rank movement Down 3,738 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #151,532 | 108 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,270 | 101 | 0.03 | -7 bearers (-6.5%) | Down 3,738 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 Lemasurier 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 | #151,532 | #155,270 | -2.5% |
| Count | 108 | 101 | -6.5% |
| Per 100K | 0.04 | 0.03 | -15.5% |
Between the 2010 and 2020 Census, the number of Lemasurier bearers went from 108 to 101 (-6.5% change). The surname moved down 3,738 positions in the national ranking, going from #151,532 to #155,270.
FAQ
Lemasurier surname: questions and answers
How many people in the U.S. have the surname Lemasurier?
Name Census estimates that about 116 living Americans carry the surname Lemasurier. Using the current population baseline, that works out to roughly 1 in 2,954,779 residents.
How common is Lemasurier?
Lemasurier ranks #155,270 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 101 people with the surname Lemasurier. That is different from the site's living-bearer estimate (116), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Lemasurier.
Has Lemasurier become more or less common over time?
Between 2010 and 2020, the surname Lemasurier went from 108 recorded bearers to 101. That is a decrease of 7 (-6.5%). In the national ranking it fell from #151,532 to #155,270.
What does the Census say about the background of Lemasurier?
Among Census respondents with the surname Lemasurier, the largest self-reported group is White at 92.1%. The next largest groups are Hispanic (5.9%) and Two or More Races (2.0%). 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 Lemasurier in the 2020 Census, accounting for 92.1% (93 people in the source table).
What is the full ancestry breakdown?
Lemasurier appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.1%), Hispanic (5.9%), Two or More Races (2.0%). 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 Lemasurier (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 Lemasurier mean?
A surname denoting someone who lived in a small house or cottage. 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 Lemasurier (0.03 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 Lemasurier?
Find out how common the surname Lemasurier is on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.