2000
#149,328
National surname rank
Recorded bearers 101
First available Census row
Per 100,000 0.04
Very Rare Last name
Collichio
A surname of Italian origin, possibly derived from a place name or occupation.
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Collichio. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Collichio 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
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Collichio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Collichio, the largest self-reported group is White at 100.0%.
Origin
Meaning and origin of Collichio
The surname Collichio is believed to have originated in Italy, specifically in the region of Tuscany, sometime during the late medieval period or the Renaissance era. It is thought to be derived from the Italian word "colle," which means "hill" or "slope," combined with a suffix indicating a location or place of origin.
One of the earliest recorded instances of the name Collichio can be found in a document dating back to the 14th century, where it is mentioned in connection with a rural area near the city of Florence. This suggests that the name may have initially been associated with a family or group of people residing on or near a particular hillside or sloped terrain.
During the 15th and 16th centuries, the name Collichio appears in various records and manuscripts related to the Florentine Republic and the Medici family, who were prominent rulers and patrons of the arts in that era. It is possible that individuals bearing this surname may have been involved in agriculture, viniculture, or other occupations tied to the region's hilly terrain.
In the 17th century, a notable figure named Giovanni Collichio (1592-1668) was a renowned poet and playwright from Florence, whose works were widely acclaimed and performed throughout Italy during his lifetime. His literary contributions helped to further establish the Collichio name within the cultural landscape of the Renaissance period.
Another individual of historical significance was Tommaso Collichio (1748-1823), a military officer and strategist who served in the Napoleonic Wars. He is credited with devising innovative tactics and strategies that were instrumental in several key battles against the Austrian forces.
In the 19th century, a prominent architect named Emilio Collichio (1825-1901) left his mark on the cityscape of Rome, where he designed and oversaw the construction of several notable buildings and landmarks, including the Palazzo Collichio, which still stands today as a testament to his architectural prowess.
Throughout the centuries, variations and alternative spellings of the surname Collichio have emerged, such as Collicchio, Collicchi, and Collicci, reflecting the regional dialects and linguistic evolutions within different parts of Italy. However, the core meaning and connection to the concept of "hill" or "slope" has remained consistent across these variations.
Demographics
Ancestry and ethnicity for Collichio
Among Census respondents with the surname Collichio, the largest self-reported group is White at 100.0%.
The bar chart below shows how Collichio 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 Collichio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White100.0% · 116
Timeline
Historical Census data for Collichio
Collichio 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
#146,201
National surname rank
Recorded bearers 113
+12 bearers (+11.9%)
Per 100,000 0.04
Rank movement Up 3,127 places
2020
#145,028
National surname rank
Recorded bearers 116
+3 bearers (+2.7%)
Per 100,000 0.04
Rank movement Up 1,173 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #149,328 | 101 | 0.04 | First available Census row | First available Census row |
| 2010 | #146,201 | 113 | 0.04 | +12 bearers (+11.9%) | Up 3,127 places |
| 2020 | #145,028 | 116 | 0.04 | +3 bearers (+2.7%) | Up 1,173 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 Collichio 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 | #146,201 | #145,028 | 0.8% |
| Count | 113 | 116 | 2.7% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Collichio bearers went from 113 to 116 (+2.7% change). The surname moved up 1,173 positions in the national ranking, going from #146,201 to #145,028.
FAQ
Collichio surname: questions and answers
How many people in the U.S. have the surname Collichio?
Name Census estimates that about 133 living Americans carry the surname Collichio. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Collichio?
Collichio ranks #145,028 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 116 people with the surname Collichio. That is different from the site's living-bearer estimate (133), 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 Collichio.
Has Collichio become more or less common over time?
Between 2010 and 2020, the surname Collichio went from 113 recorded bearers to 116. That is an increase of 3 (+2.7%). In the national ranking it rose from #146,201 to #145,028.
What does the Census say about the background of Collichio?
Among Census respondents with the surname Collichio, the largest self-reported group is White at 100.0%. 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 Collichio in the 2020 Census, accounting for 100.0% (116 people in the source table).
What is the full ancestry breakdown?
Collichio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (100.0%). 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 Collichio (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 Collichio mean?
A surname of Italian origin, possibly derived from a place name or occupation. 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 Collichio (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 share the surname Collichio?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.