2010
#152,628
National surname rank
Recorded bearers 107
First available Census row
Per 100,000 0.04
Very Rare Last name
Costigliola
An Italian surname derived from a place name referring to a hilly or sloping area.
According to the 2020 US Census Bureau surname tables, roughly 117 Americans carry the last name Costigliola. That puts it at #154,755 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,929,524 residents).
This page is the full Name Census profile for the Costigliola 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
117
1 in 2,929,524
Census rank
#154,755
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
102
very rare in the US
Popularity narrative
The Census Bureau recorded 102 bearers of the surname Costigliola in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154755th position in the national surname ranking.
Among Census respondents with the surname Costigliola, the largest self-reported group is White at 95.1%. The next largest groups are Hispanic (3.9%) and Two or More Races (1.0%).
Origin
Meaning and origin of Costigliola
The surname Costigliola is of Italian origin, specifically from the Piedmont region in northwest Italy. It is believed to have emerged during the Middle Ages, likely between the 11th and 13th centuries.
The name Costigliola is thought to be derived from the Italian word "costiglia," meaning "rib" or "side." It may have originally referred to a person living near a hillside or a sloping area, suggesting a connection to a geographical feature or location.
One of the earliest recorded mentions of the name Costigliola can be found in a 14th-century document from the town of Asti, located in the Piedmont region. This document references a certain "Giovanni Costigliola" as a landowner in the area.
Another notable historical figure bearing this surname was Gian Bartolomeo Costigliola, a renowned painter and architect who lived in the 16th century (c.1515-1590). He was born in Asti and is best known for his work on the Chiesa di San Giovanni Battista in Mondovì, a town in the province of Cuneo.
In the 17th century, a certain Antonio Costigliola (c.1620-1689) was a respected jurist and legal scholar from the town of Saluzzo, also in the Piedmont region. His treatises on Roman law and legal proceedings were widely circulated during his lifetime.
The 18th century saw the rise of Francesco Costigliola (1727-1804), a prominent military officer who served in the Sardinian Army during the Napoleonic Wars. He was known for his bravery and tactical skills, earning him various honors and distinctions.
Lastly, in the 19th century, there was a notable writer and journalist named Eugenio Costigliola (1835-1901), who hailed from the city of Turin. He was a prolific author and contributed to several local newspapers, covering a wide range of topics from politics to cultural events.
While the Costigliola surname has its roots in the Piedmont region of Italy, it has since spread to other parts of the country and beyond, with descendants carrying on this historical name across generations.
Demographics
Ancestry and ethnicity for Costigliola
Among Census respondents with the surname Costigliola, the largest self-reported group is White at 95.1%. The next largest groups are Hispanic (3.9%) and Two or More Races (1.0%).
The bar chart below shows how Costigliola 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 Costigliola surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.1% · 97
- Hispanic or Latino3.9% · 4
- Two or more races1.0% · 1
Timeline
Historical Census data for Costigliola
Costigliola 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
#154,755
National surname rank
Recorded bearers 102
-5 bearers (-4.7%)
Per 100,000 0.03
Rank movement Down 2,127 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #152,628 | 107 | 0.04 | First available Census row | First available Census row |
| 2020 | #154,755 | 102 | 0.03 | -5 bearers (-4.7%) | Down 2,127 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 Costigliola 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 | #152,628 | #154,755 | -1.4% |
| Count | 107 | 102 | -4.7% |
| Per 100K | 0.04 | 0.03 | -14.7% |
Between the 2010 and 2020 Census, the number of Costigliola bearers went from 107 to 102 (-4.7% change). The surname moved down 2,127 positions in the national ranking, going from #152,628 to #154,755.
FAQ
Costigliola surname: questions and answers
How many people in the U.S. have the surname Costigliola?
Name Census estimates that about 117 living Americans carry the surname Costigliola. Using the current population baseline, that works out to roughly 1 in 2,929,524 residents.
How common is Costigliola?
Costigliola ranks #154,755 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 102 people with the surname Costigliola. That is different from the site's living-bearer estimate (117), 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 Costigliola.
Has Costigliola become more or less common over time?
Between 2010 and 2020, the surname Costigliola went from 107 recorded bearers to 102. That is a decrease of 5 (-4.7%). In the national ranking it fell from #152,628 to #154,755.
What does the Census say about the background of Costigliola?
Among Census respondents with the surname Costigliola, the largest self-reported group is White at 95.1%. The next largest groups are Hispanic (3.9%) and Two or More Races (1.0%). 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 Costigliola in the 2020 Census, accounting for 95.1% (97 people in the source table).
What is the full ancestry breakdown?
Costigliola appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.1%), Hispanic (3.9%), Two or More Races (1.0%). 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 Costigliola (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 Costigliola mean?
An Italian surname derived from a place name referring to a hilly or sloping area. 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 Costigliola (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 share the surname Costigliola?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.