2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Algerio
A habitational name referring to someone from Algiers.
According to the 2020 US Census Bureau surname tables, roughly 127 Americans carry the last name Algerio. That puts it at #148,665 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,698,853 residents).
This page is the full Name Census profile for the Algerio 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
127
1 in 2,698,853
Census rank
#148,665
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
111
very rare in the US
Popularity narrative
The Census Bureau recorded 111 bearers of the surname Algerio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 148665th position in the national surname ranking.
Among Census respondents with the surname Algerio, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (5.4%) and Two or More Races (1.8%).
Origin
Meaning and origin of Algerio
The surname Algerio originates from Italy, specifically the regions of Piedmont and Liguria, dating back to the 12th century. It is derived from the Italian word "algherese," referring to someone from the town of Alghero, located on the island of Sardinia.
One of the earliest recorded instances of the Algerio surname can be found in the Codice Diplomatico della Repubblica di Genova, a collection of historical documents from the Republic of Genoa, where it appears as "Algerio de Alghero" in the year 1202.
The name is believed to have its roots in the Catalan language, as Alghero was founded by Catalans in the 14th century. The town's original name, "L'Alguer," eventually evolved into the Italian form "Alghero," giving rise to the surname Algerio.
Notable individuals with the Algerio surname include Giacomo Algerio (1560-1630), an Italian architect and military engineer who designed fortifications in Sardinia and Piedmont. Another was Domenico Algerio (1730-1801), a Ligurian painter known for his religious works adorning churches in Genoa and the surrounding areas.
In the 16th century, records show an Algerio family residing in the town of Noli, near Genoa. Among them was Giovanni Algerio (1512-1588), a merchant and ship owner who traded goods throughout the Mediterranean.
The surname Algerio also appears in historical documents from the Republic of Venice, where it is mentioned in connection with the island of Crete, which was under Venetian rule at the time. One such individual was Marco Algerio (1670-1745), a Venetian military officer who served in the defense of Crete against Ottoman forces.
Throughout its history, the Algerio surname has maintained a presence in various parts of Italy, particularly in the regions of Piedmont, Liguria, and Sardinia, where it originated and has deep-rooted ties to the local communities and their cultural heritage.
Demographics
Ancestry and ethnicity for Algerio
Among Census respondents with the surname Algerio, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (5.4%) and Two or More Races (1.8%).
The bar chart below shows how Algerio 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 Algerio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.0% · 101
- Hispanic or Latino5.4% · 6
- Two or more races1.8% · 2
- Black or African American0.9% · 1
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Algerio
Algerio 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
#140,157
National surname rank
Recorded bearers 119
+6 bearers (+5.3%)
Per 100,000 0.04
Rank movement Down 3,374 places
2020
#148,665
National surname rank
Recorded bearers 111
-8 bearers (-6.7%)
Per 100,000 0.04
Rank movement Down 8,508 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #140,157 | 119 | 0.04 | +6 bearers (+5.3%) | Down 3,374 places |
| 2020 | #148,665 | 111 | 0.04 | -8 bearers (-6.7%) | Down 8,508 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 Algerio 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 | #140,157 | #148,665 | -6.1% |
| Count | 119 | 111 | -6.7% |
| Per 100K | 0.04 | 0.04 | -7.2% |
Between the 2010 and 2020 Census, the number of Algerio bearers went from 119 to 111 (-6.7% change). The surname moved down 8,508 positions in the national ranking, going from #140,157 to #148,665.
FAQ
Algerio surname: questions and answers
How many people in the U.S. have the surname Algerio?
Name Census estimates that about 127 living Americans carry the surname Algerio. Using the current population baseline, that works out to roughly 1 in 2,698,853 residents.
How common is Algerio?
Algerio ranks #148,665 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 111 people with the surname Algerio. That is different from the site's living-bearer estimate (127), 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 Algerio.
Has Algerio become more or less common over time?
Between 2010 and 2020, the surname Algerio went from 119 recorded bearers to 111. That is a decrease of 8 (-6.7%). In the national ranking it fell from #140,157 to #148,665.
What does the Census say about the background of Algerio?
Among Census respondents with the surname Algerio, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (5.4%) and Two or More Races (1.8%). 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 Algerio in the 2020 Census, accounting for 91.0% (101 people in the source table).
What is the full ancestry breakdown?
Algerio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.0%), Hispanic (5.4%), Two or More Races (1.8%). 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 Algerio (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 Algerio mean?
A habitational name referring to someone from Algiers. 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 Algerio (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 Algerio?
Find out how many people have the last name Algerio on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.