2000
#63,812
National surname rank
Recorded bearers 292
First available Census row
Per 100,000 0.11
Very Rare Last name
Spiezio
An occupational surname of Italian origin referring to a spikemaker or nailsmith.
According to the 2020 US Census Bureau surname tables, roughly 388 Americans carry the last name Spiezio. That puts it at #63,720 in the national surname ranking, appearing at a frequency of 0.11 per 100,000 people (about 1 in 883,387 residents).
This page is the full Name Census profile for the Spiezio 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
388
1 in 883,387
Census rank
#63,720
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
338
very rare in the US
Popularity narrative
The Census Bureau recorded 338 bearers of the surname Spiezio in its 2020 decennial surname file. At a rate of 0.11 per 100,000 residents, it holds the 63720th position in the national surname ranking.
Among Census respondents with the surname Spiezio, the largest self-reported group is White at 95.3%. The next largest groups are Asian/Pacific Islander (1.8%) and Two or More Races (1.5%).
Origin
Meaning and origin of Spiezio
The surname Spiezio has its roots in the Italian language and originated in Italy during the late medieval period. It is believed to have derived from the Italian word "spiazzo," which means "open space" or "square." This suggests that the name may have initially referred to someone who lived near or worked in an open area or town square.
One of the earliest recorded instances of the Spiezio name can be found in the historical records of the city of Naples, where a family by the name of Spiezio is mentioned in documents dating back to the 14th century. These records indicate that the Spiezio family held a prominent position in the local community and played a significant role in the city's affairs.
In the 15th century, a notable figure named Antonio Spiezio (1425-1491) was a renowned scholar and philosopher who taught at the University of Naples. His works on ethics and metaphysics gained widespread recognition during the Renaissance period, and he is considered one of the leading intellectuals of his time.
Another individual of note was Girolamo Spiezio (1560-1632), a celebrated architect from the Italian city of Vicenza. He was greatly influenced by the works of the renowned architect Andrea Palladio and was responsible for designing several notable buildings, including the Church of San Gaetano in Vicenza.
During the 17th century, the Spiezio name appeared in various records across different regions of Italy, indicating that the family had spread throughout the country. One such record mentions a Giovanni Battista Spiezio (1625-1699), who was a skilled artist and painter known for his religious works adorning churches in Rome and Naples.
In the 19th century, a prominent figure was Giuseppe Spiezio (1815-1878), a politician and lawyer from the city of Salerno. He served as a member of the Italian Parliament and was actively involved in the Risorgimento, the movement that led to the unification of Italy.
Throughout its history, the Spiezio surname has been associated with various notable individuals who have made significant contributions in fields such as art, architecture, academia, and politics. While the name's origins can be traced back to medieval Italy, its legacy continues to endure, carrying the rich cultural heritage of the Italian people.
Demographics
Ancestry and ethnicity for Spiezio
Among Census respondents with the surname Spiezio, the largest self-reported group is White at 95.3%. The next largest groups are Asian/Pacific Islander (1.8%) and Two or More Races (1.5%).
The bar chart below shows how Spiezio 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 Spiezio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.3% · 322
- Asian and Pacific Islander1.8% · 6
- Two or more races1.5% · 5
- Hispanic or Latino1.2% · 4
- American Indian and Alaska Native0.3% · 1
Timeline
Historical Census data for Spiezio
Spiezio 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
#60,347
National surname rank
Recorded bearers 334
+42 bearers (+14.4%)
Per 100,000 0.11
Rank movement Up 3,465 places
2020
#63,720
National surname rank
Recorded bearers 338
+4 bearers (+1.2%)
Per 100,000 0.11
Rank movement Down 3,373 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #63,812 | 292 | 0.11 | First available Census row | First available Census row |
| 2010 | #60,347 | 334 | 0.11 | +42 bearers (+14.4%) | Up 3,465 places |
| 2020 | #63,720 | 338 | 0.11 | +4 bearers (+1.2%) | Down 3,373 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 Spiezio 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 | #60,347 | #63,720 | -5.6% |
| Count | 334 | 338 | 1.2% |
| Per 100K | 0.11 | 0.11 | 2.8% |
Between the 2010 and 2020 Census, the number of Spiezio bearers went from 334 to 338 (+1.2% change). The surname moved down 3,373 positions in the national ranking, going from #60,347 to #63,720.
Notable bearers
Famous people with the surname Spiezio
FAQ
Spiezio surname: questions and answers
How many people in the U.S. have the surname Spiezio?
Name Census estimates that about 388 living Americans carry the surname Spiezio. Using the current population baseline, that works out to roughly 1 in 883,387 residents.
How common is Spiezio?
Spiezio ranks #63,720 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.11 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 338 people with the surname Spiezio. That is different from the site's living-bearer estimate (388), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.11 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.11 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 Spiezio.
Has Spiezio become more or less common over time?
Between 2010 and 2020, the surname Spiezio went from 334 recorded bearers to 338. That is an increase of 4 (+1.2%). In the national ranking it fell from #60,347 to #63,720.
What does the Census say about the background of Spiezio?
Among Census respondents with the surname Spiezio, the largest self-reported group is White at 95.3%. The next largest groups are Asian/Pacific Islander (1.8%) and Two or More Races (1.5%). 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 Spiezio in the 2020 Census, accounting for 95.3% (322 people in the source table).
What is the full ancestry breakdown?
Spiezio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.3%), Asian/Pacific Islander (1.8%), Two or More Races (1.5%). 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 Spiezio (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 Spiezio mean?
An occupational surname of Italian origin referring to a spikemaker or nailsmith. 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 Spiezio (0.11 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 common is the surname Spiezio?
For a quick modern take, check how many Americans have the surname Spiezio on our sister site HowManyOfMe.org.