2000
#13,707
National surname rank
Recorded bearers 2,029
First available Census row
Per 100,000 0.75
Rare Last name
Bucio
A Spanish surname of uncertain origin, possibly derived from a place name or a nickname.
According to the 2020 US Census Bureau surname tables, roughly 4,541 Americans carry the last name Bucio. That puts it at #8,026 in the national surname ranking, appearing at a frequency of 1.32 per 100,000 people (about 1 in 75,480 residents).
This page is the full Name Census profile for the Bucio 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
4.5K
1 in 75,480
Census rank
#8,026
2020 decennial data
Per 100,000
1.3
Frequency rate
Recorded bearers
4.0K
rare in the US
Popularity narrative
The Census Bureau recorded 3,960 bearers of the surname Bucio in its 2020 decennial surname file. At a rate of 1.32 per 100,000 residents, it holds the 8026th position in the national surname ranking.
Among Census respondents with the surname Bucio, the largest self-reported group is Hispanic at 96.6%. The next largest groups are White (2.5%) and Asian/Pacific Islander (0.5%).
Origin
Meaning and origin of Bucio
The surname BUCIO has its origins in Spain and can be traced back to the 15th century. It is believed to have derived from the Spanish word "bucio," which means "snail" or "spiral shell." This suggests that the name may have initially been a nickname or a descriptive term for someone who bore a resemblance to a snail or worked with these creatures.
One of the earliest recorded instances of the name BUCIO can be found in the archives of the town of Alcolea del Río in Seville, Spain, where a certain Pedro Bucio was mentioned in a document dated 1487. This document was a record of land ownership and transactions.
In the 16th century, the name BUCIO appeared in several historical records in various parts of Spain, indicating its spread across the country. For instance, in 1532, a Juan Bucio was listed as a resident of the town of Jerez de la Frontera in Andalusia.
As Spanish explorers and settlers ventured to the Americas during the colonial era, the surname BUCIO traveled with them. One notable figure was Hernán Bucio, a conquistador who accompanied Hernán Cortés during the conquest of Mexico in the early 16th century.
Another prominent individual bearing the BUCIO surname was Francisca Bucio, a Spanish noblewoman who lived in the late 17th century. She was known for her philanthropic work and founded a hospital in Seville, which still bears her name today.
In the 19th century, a family of BUCIO landowners and cattle ranchers gained prominence in the Mexican state of Jalisco. One of their descendants, Javier Bucio (1845-1912), was a respected lawyer and politician who served as governor of Jalisco.
Over the centuries, variations of the spelling have emerged, such as Bucció, Buccio, and Buccini, reflecting the influence of regional dialects and language evolution. However, the core meaning and origin of the name remain rooted in its Spanish heritage.
Demographics
Ancestry and ethnicity for Bucio
Among Census respondents with the surname Bucio, the largest self-reported group is Hispanic at 96.6%. The next largest groups are White (2.5%) and Asian/Pacific Islander (0.5%).
The bar chart below shows how Bucio 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 Bucio surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino96.6% · 3,826
- White2.5% · 98
- Asian and Pacific Islander0.5% · 19
- American Indian and Alaska Native0.3% · 10
- Black or African American0.1% · 5
- Two or more races0.1% · 2
Timeline
Historical Census data for Bucio
Bucio 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
#8,822
National surname rank
Recorded bearers 3,712
+1,683 bearers (+82.9%)
Per 100,000 1.26
Rank movement Up 4,885 places
2020
#8,026
National surname rank
Recorded bearers 3,960
+248 bearers (+6.7%)
Per 100,000 1.32
Rank movement Up 796 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #13,707 | 2,029 | 0.75 | First available Census row | First available Census row |
| 2010 | #8,822 | 3,712 | 1.26 | +1,683 bearers (+82.9%) | Up 4,885 places |
| 2020 | #8,026 | 3,960 | 1.32 | +248 bearers (+6.7%) | Up 796 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 Bucio 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 | #8,822 | #8,026 | 9.0% |
| Count | 3,712 | 3,960 | 6.7% |
| Per 100K | 1.26 | 1.32 | 5.1% |
Between the 2010 and 2020 Census, the number of Bucio bearers went from 3,712 to 3,960 (+6.7% change). The surname moved up 796 positions in the national ranking, going from #8,822 to #8,026.
FAQ
Bucio surname: questions and answers
How many people in the U.S. have the surname Bucio?
Name Census estimates that about 4,541 living Americans carry the surname Bucio. Using the current population baseline, that works out to roughly 1 in 75,480 residents.
How common is Bucio?
Bucio ranks #8,026 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.32 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 3,960 people with the surname Bucio. That is different from the site's living-bearer estimate (4,541), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.32 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.32 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Bucio.
Has Bucio become more or less common over time?
Between 2010 and 2020, the surname Bucio went from 3,712 recorded bearers to 3,960. That is an increase of 248 (+6.7%). In the national ranking it rose from #8,822 to #8,026.
What does the Census say about the background of Bucio?
Among Census respondents with the surname Bucio, the largest self-reported group is Hispanic at 96.6%. The next largest groups are White (2.5%) and Asian/Pacific Islander (0.5%). 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?
Hispanic is the largest self-reported group for the surname Bucio in the 2020 Census, accounting for 96.6% (3,826 people in the source table).
What is the full ancestry breakdown?
Bucio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (96.6%), White (2.5%), Asian/Pacific Islander (0.5%). 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 Bucio (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 Bucio mean?
A Spanish surname of uncertain origin, possibly derived from a place name or a nickname. 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 Bucio (1.32 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 Bucio?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.