2010
#153,769
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Seror
A Sephardic surname denoting a person's occupation as a silk worker or trader.
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Seror. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Seror 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Seror in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Seror, the largest self-reported group is White at 87.0%. The next largest groups are Two or More Races (7.0%) and Black (2.6%).
Origin
Meaning and origin of Seror
The surname "SEROR" is believed to have originated in the Iberian Peninsula, particularly in Spain and Portugal, during the Middle Ages. It is likely derived from the Sephardic Jewish community that settled in these regions after being expelled from other parts of Europe.
One of the earliest recorded instances of the name "SEROR" can be found in the "Libro de los Repartimientos" (Book of Distributions), a census-like record of the distribution of lands and properties in the Kingdom of Valencia after the Christian conquest in the 13th century. This document lists several individuals with the surname "SEROR" among the Jewish population.
During the 14th century, the name appears in various historical records, including tax rolls and legal documents, across different regions of Spain and Portugal. This suggests that the "SEROR" family had established roots and spread throughout the Iberian Peninsula during this period.
In the 15th century, following the expulsion of Jews from Spain in 1492, many Sephardic Jews, including those with the surname "SEROR," sought refuge in other parts of Europe, North Africa, and the Ottoman Empire. This diaspora led to the further dissemination of the name across various regions.
One notable figure with the surname "SEROR" was Rabbi Isaac Seror, a prominent Sephardic scholar who lived in the late 15th and early 16th centuries. He authored several works on Jewish law and philosophy and was highly respected within the Sephardic community.
Another individual of historical significance was Samuel Seror, a merchant and financier who lived in the 16th century. He played a crucial role in facilitating trade between the Ottoman Empire and European nations, and his name is mentioned in various commercial records of the time.
In the 17th century, the "SEROR" surname can be found in records from various parts of Europe, particularly in the Netherlands, where a significant Sephardic Jewish community had settled. One notable figure from this period was Abraham Seror, a successful merchant and philanthropist who contributed to the development of the Dutch Jewish community.
As the centuries progressed, individuals with the surname "SEROR" continued to make their mark in various fields, including literature, music, and academia. Jacob Seror, a 19th-century Moroccan Jewish writer and poet, is remembered for his contributions to the Judeo-Arabic literary tradition.
It is important to note that while the surname "SEROR" has its roots in the Sephardic Jewish community, it has also been adopted by individuals from other cultural and ethnic backgrounds over time, further diversifying its presence and significance.
Demographics
Ancestry and ethnicity for Seror
Among Census respondents with the surname Seror, the largest self-reported group is White at 87.0%. The next largest groups are Two or More Races (7.0%) and Black (2.6%).
The bar chart below shows how Seror 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 Seror surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.0% · 100
- Two or more races7.0% · 8
- Black or African American2.6% · 3
- Hispanic or Latino1.7% · 2
- Asian and Pacific Islander1.7% · 2
Timeline
Historical Census data for Seror
Seror 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
#145,757
National surname rank
Recorded bearers 115
+9 bearers (+8.5%)
Per 100,000 0.04
Rank movement Up 8,012 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #153,769 | 106 | 0.04 | First available Census row | First available Census row |
| 2020 | #145,757 | 115 | 0.04 | +9 bearers (+8.5%) | Up 8,012 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 Seror 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 | #153,769 | #145,757 | 5.2% |
| Count | 106 | 115 | 8.5% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Seror bearers went from 106 to 115 (+8.5% change). The surname moved up 8,012 positions in the national ranking, going from #153,769 to #145,757.
FAQ
Seror surname: questions and answers
How many people in the U.S. have the surname Seror?
Name Census estimates that about 132 living Americans carry the surname Seror. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Seror?
Seror ranks #145,757 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 115 people with the surname Seror. That is different from the site's living-bearer estimate (132), 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 Seror.
Has Seror become more or less common over time?
Between 2010 and 2020, the surname Seror went from 106 recorded bearers to 115. That is an increase of 9 (+8.5%). In the national ranking it rose from #153,769 to #145,757.
What does the Census say about the background of Seror?
Among Census respondents with the surname Seror, the largest self-reported group is White at 87.0%. The next largest groups are Two or More Races (7.0%) and Black (2.6%). 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 Seror in the 2020 Census, accounting for 87.0% (100 people in the source table).
What is the full ancestry breakdown?
Seror appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.0%), Two or More Races (7.0%), Black (2.6%). 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 Seror (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 Seror mean?
A Sephardic surname denoting a person's occupation as a silk worker or trader. 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 Seror (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 are called Seror?
See how many people are called Seror on HowManyOfMe.org, our sister site built around that single question.