2000
#134,929
National surname rank
Recorded bearers 115
First available Census row
Per 100,000 0.04
Very Rare Last name
Lupas
A surname potentially derived from the Spanish word "lupa" meaning magnifying glass or lenses.
According to the 2020 US Census Bureau surname tables, roughly 135 Americans carry the last name Lupas. That puts it at #143,511 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,538,921 residents).
This page is the full Name Census profile for the Lupas 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
135
1 in 2,538,921
Census rank
#143,511
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
118
very rare in the US
Popularity narrative
The Census Bureau recorded 118 bearers of the surname Lupas in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 143511th position in the national surname ranking.
Among Census respondents with the surname Lupas, the largest self-reported group is White at 86.4%. The next largest groups are Asian/Pacific Islander (9.3%) and Hispanic (2.5%).
Origin
Meaning and origin of Lupas
The surname LUPAS is believed to have originated in Poland, with roots dating back to the 12th century. It is derived from the Polish word "lupa," meaning "magnifying glass" or "loupe." This suggests that the name may have been associated with glassmakers, lens crafters, or individuals involved in trades related to optics or vision.
In ancient Polish records, variations of the name, such as "Lupas," "Lupasz," and "Lupaszczyk," can be found. One of the earliest documented references to the surname LUPAS appears in the "Księga Henrykowska," a 13th-century manuscript containing land records and property transactions in the region of Silesia.
During the Middle Ages, the LUPAS name was prevalent in several villages and towns across Poland, particularly in the regions of Silesia, Greater Poland, and Lesser Poland. Some historical records indicate that individuals bearing the LUPAS surname were landowners, artisans, or tradesmen in these areas.
Notable individuals with the LUPAS surname include Jan Lupas (1551-1617), a renowned Polish mathematician and astronomer who contributed to the development of the Gregorian calendar. Another prominent figure was Andrzej Lupas (1712-1778), a Polish noble and military officer who fought in the Wars of the Polish Succession.
In the 19th century, Stanisław Lupas (1834-1892) gained recognition as a Polish writer and poet, known for his romantic and patriotic works. Józef Lupas (1870-1945), a Polish painter and artist, was celebrated for his landscape paintings and portraits depicting rural life in Galicia.
One of the most influential figures with the LUPAS surname was Maria Lupas (1892-1976), a Polish educator and activist who played a crucial role in promoting women's rights and education. She founded several schools and organizations dedicated to empowering women and advocating for gender equality.
While the LUPAS surname has its roots in Poland, it has since spread to other parts of Europe and beyond, carried by individuals who migrated or descended from Polish ancestors. The name continues to be present in various regions, although its prevalence may vary across different communities and countries.
Demographics
Ancestry and ethnicity for Lupas
Among Census respondents with the surname Lupas, the largest self-reported group is White at 86.4%. The next largest groups are Asian/Pacific Islander (9.3%) and Hispanic (2.5%).
The bar chart below shows how Lupas 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 Lupas surname at the time of the 2020 Census, not any inherent property of the name itself.
- White86.4% · 102
- Asian and Pacific Islander9.3% · 11
- Hispanic or Latino2.5% · 3
- American Indian and Alaska Native0.8% · 1
- Two or more races0.8% · 1
Timeline
Historical Census data for Lupas
Lupas 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
#127,494
National surname rank
Recorded bearers 134
+19 bearers (+16.5%)
Per 100,000 0.05
Rank movement Up 7,435 places
2020
#143,511
National surname rank
Recorded bearers 118
-16 bearers (-11.9%)
Per 100,000 0.04
Rank movement Down 16,017 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #134,929 | 115 | 0.04 | First available Census row | First available Census row |
| 2010 | #127,494 | 134 | 0.05 | +19 bearers (+16.5%) | Up 7,435 places |
| 2020 | #143,511 | 118 | 0.04 | -16 bearers (-11.9%) | Down 16,017 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 Lupas 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 | #127,494 | #143,511 | -12.6% |
| Count | 134 | 118 | -11.9% |
| Per 100K | 0.05 | 0.04 | -21.0% |
Between the 2010 and 2020 Census, the number of Lupas bearers went from 134 to 118 (-11.9% change). The surname moved down 16,017 positions in the national ranking, going from #127,494 to #143,511.
FAQ
Lupas surname: questions and answers
How many people in the U.S. have the surname Lupas?
Name Census estimates that about 135 living Americans carry the surname Lupas. Using the current population baseline, that works out to roughly 1 in 2,538,921 residents.
How common is Lupas?
Lupas ranks #143,511 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 118 people with the surname Lupas. That is different from the site's living-bearer estimate (135), 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 Lupas.
Has Lupas become more or less common over time?
Between 2010 and 2020, the surname Lupas went from 134 recorded bearers to 118. That is a decrease of 16 (-11.9%). In the national ranking it fell from #127,494 to #143,511.
What does the Census say about the background of Lupas?
Among Census respondents with the surname Lupas, the largest self-reported group is White at 86.4%. The next largest groups are Asian/Pacific Islander (9.3%) and Hispanic (2.5%). 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 Lupas in the 2020 Census, accounting for 86.4% (102 people in the source table).
What is the full ancestry breakdown?
Lupas appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (86.4%), Asian/Pacific Islander (9.3%), Hispanic (2.5%). 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 Lupas (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 Lupas mean?
A surname potentially derived from the Spanish word "lupa" meaning magnifying glass or lenses. 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 Lupas (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 last name Lupas?
If you just want to know how many people have the surname Lupas, HowManyOfMe.org gives you the headline number in one glance.