2010
#137,327
National surname rank
Recorded bearers 122
First available Census row
Per 100,000 0.04
Very Rare Last name
Lopin
A locational or topographic surname derived from a place name in France.
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Lopin. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Lopin 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
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Lopin in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Lopin, the largest self-reported group is White at 85.2%. The next largest groups are Two or More Races (8.3%) and Asian/Pacific Islander (5.6%).
Origin
Meaning and origin of Lopin
The surname Lopin is believed to have originated in the region of Normandy in northern France during the medieval period. It is likely derived from the Old French word "lopin," which referred to a small piece of land or a plot of ground. This suggests that the name was initially an occupational surname given to someone who worked as a landowner or farmer.
One of the earliest recorded instances of the name Lopin can be traced back to the Domesday Book, a comprehensive survey of land ownership and wealth in England commissioned by William the Conqueror in 1086. The name appears in various spellings, such as Lopyn and Lopine, indicating the fluidity of surnames during that time.
During the 12th century, a notable figure named Raoul Lopin was mentioned in historical records as a landowner in the village of Montreuil-sur-Mer, located in the Pas-de-Calais region of northern France. His descendants likely carried on the surname, contributing to its spread throughout the region.
In the 14th century, a French nobleman named Jacques Lopin (c. 1320-1387) gained prominence for his military service during the Hundred Years' War. He was knighted for his bravery on the battlefield and granted lands in the Normandy region, further cementing the name's association with landownership.
Another individual of note was Jean Lopin (c. 1450-1521), a renowned scholar and philosopher from the town of Rouen in Normandy. He studied at the University of Paris and later became a professor of theology, leaving behind several influential writings on religious and philosophical topics.
As the Lopin name spread across Europe, it also found its way to other regions. In the 16th century, a merchant named Pieter Lopin (c. 1520-1589) from the Netherlands is recorded as having established trade routes with the Dutch East Indies, contributing to the expansion of the Dutch trading empire.
Throughout the centuries, the Lopin surname has been carried by individuals from various walks of life, including farmers, artisans, traders, and scholars. While its origins can be traced back to the Normandy region of France, the name has since become dispersed across different parts of Europe and beyond, a testament to the migration and interconnectedness of families and communities over time.
Demographics
Ancestry and ethnicity for Lopin
Among Census respondents with the surname Lopin, the largest self-reported group is White at 85.2%. The next largest groups are Two or More Races (8.3%) and Asian/Pacific Islander (5.6%).
The bar chart below shows how Lopin 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 Lopin surname at the time of the 2020 Census, not any inherent property of the name itself.
- White85.2% · 92
- Two or more races8.3% · 9
- Asian and Pacific Islander5.6% · 6
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Lopin
Lopin 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
#150,935
National surname rank
Recorded bearers 108
-14 bearers (-11.5%)
Per 100,000 0.04
Rank movement Down 13,608 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #137,327 | 122 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,935 | 108 | 0.04 | -14 bearers (-11.5%) | Down 13,608 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 Lopin 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 | #137,327 | #150,935 | -9.9% |
| Count | 122 | 108 | -11.5% |
| Per 100K | 0.04 | 0.04 | -9.7% |
Between the 2010 and 2020 Census, the number of Lopin bearers went from 122 to 108 (-11.5% change). The surname moved down 13,608 positions in the national ranking, going from #137,327 to #150,935.
FAQ
Lopin surname: questions and answers
How many people in the U.S. have the surname Lopin?
Name Census estimates that about 124 living Americans carry the surname Lopin. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Lopin?
Lopin ranks #150,935 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 108 people with the surname Lopin. That is different from the site's living-bearer estimate (124), 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 Lopin.
Has Lopin become more or less common over time?
Between 2010 and 2020, the surname Lopin went from 122 recorded bearers to 108. That is a decrease of 14 (-11.5%). In the national ranking it fell from #137,327 to #150,935.
What does the Census say about the background of Lopin?
Among Census respondents with the surname Lopin, the largest self-reported group is White at 85.2%. The next largest groups are Two or More Races (8.3%) and Asian/Pacific Islander (5.6%). 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 Lopin in the 2020 Census, accounting for 85.2% (92 people in the source table).
What is the full ancestry breakdown?
Lopin appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (85.2%), Two or More Races (8.3%), Asian/Pacific Islander (5.6%). 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 Lopin (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 Lopin mean?
A locational or topographic surname derived from a place name in France. 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 Lopin (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 have the surname Lopin?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.