2000
#13,618
National surname rank
Recorded bearers 2,044
First available Census row
Per 100,000 0.76
Rare Last name
Dibiase
From Italian, meaning "of Biase," referring to a person from a place called Biase or a descendant of someone named Biase.
According to the 2020 US Census Bureau surname tables, roughly 2,094 Americans carry the last name Dibiase. That puts it at #15,455 in the national surname ranking, appearing at a frequency of 0.61 per 100,000 people (about 1 in 163,684 residents).
This page is the full Name Census profile for the Dibiase 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
2.1K
1 in 163,684
Census rank
#15,455
2020 decennial data
Per 100,000
0.6
Frequency rate
Recorded bearers
1.8K
rare in the US
Popularity narrative
The Census Bureau recorded 1,826 bearers of the surname Dibiase in its 2020 decennial surname file. At a rate of 0.61 per 100,000 residents, it holds the 15455th position in the national surname ranking.
Among Census respondents with the surname Dibiase, the largest self-reported group is White at 93.4%. The next largest groups are Hispanic (3.3%) and Two or More Races (1.7%).
Origin
Meaning and origin of Dibiase
The surname DiBiase is of Italian origin, tracing its roots back to the regions of Campania and Calabria in southern Italy. It is believed to have emerged during the medieval period, between the 11th and 14th centuries.
The name DiBiase is derived from the Italian phrase "di Biase," which translates to "of Biase." This suggests that the name may have originated as a patronymic, referring to the family or ancestors of someone named Biase. Biase itself is a variant of the Italian name Blasio, which is derived from the Greek name Blasios, meaning "to sprout" or "to bloom."
One of the earliest recorded instances of the DiBiase surname can be found in the Registro Feudale di Calabria, a feudal registry from the 13th century. This document mentions a certain Guglielmo di Biase, who held lands in the region of Calabria during that time.
In the 15th century, a notable figure bearing the DiBiase name was Giovanni Andrea DiBiase, a Neapolitan philosopher and scholar who lived from 1420 to 1492. He was renowned for his work on Aristotelian philosophy and contributed to the intellectual discourse of the Renaissance era.
During the 16th century, the DiBiase family had a presence in the town of Salerno, located in the Campania region. Records from this period mention a Matteo DiBiase, a local landowner and prominent figure in the community.
In the 18th century, a notable DiBiase was Nicola DiBiase, born in 1712 in Naples. He was a respected painter and artist who specialized in religious works and portraits. His paintings can be found in several churches and private collections throughout Italy.
Another prominent figure with the DiBiase surname was Raffaele DiBiase, born in 1860 in Calabria. He was a renowned lawyer and jurist who served as a judge in the Italian court system and contributed significantly to the development of Italian jurisprudence.
Throughout history, variations in the spelling of the DiBiase surname have been documented, including De Biase, Di Biase, and DiBiasi. These variations often reflected regional dialects or scribal preferences in record-keeping.
Demographics
Ancestry and ethnicity for Dibiase
Among Census respondents with the surname Dibiase, the largest self-reported group is White at 93.4%. The next largest groups are Hispanic (3.3%) and Two or More Races (1.7%).
The bar chart below shows how Dibiase 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 Dibiase surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.4% · 1,706
- Hispanic or Latino3.3% · 60
- Two or more races1.7% · 31
- Black or African American0.8% · 14
- Asian and Pacific Islander0.8% · 14
- American Indian and Alaska Native0.1% · 1
Timeline
Historical Census data for Dibiase
Dibiase 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
#13,964
National surname rank
Recorded bearers 2,160
+116 bearers (+5.7%)
Per 100,000 0.73
Rank movement Down 346 places
2020
#15,455
National surname rank
Recorded bearers 1,826
-334 bearers (-15.5%)
Per 100,000 0.61
Rank movement Down 1,491 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #13,618 | 2,044 | 0.76 | First available Census row | First available Census row |
| 2010 | #13,964 | 2,160 | 0.73 | +116 bearers (+5.7%) | Down 346 places |
| 2020 | #15,455 | 1,826 | 0.61 | -334 bearers (-15.5%) | Down 1,491 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 Dibiase 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 | #13,964 | #15,455 | -10.7% |
| Count | 2,160 | 1,826 | -15.5% |
| Per 100K | 0.73 | 0.61 | -16.3% |
Between the 2010 and 2020 Census, the number of Dibiase bearers went from 2,160 to 1,826 (-15.5% change). The surname moved down 1,491 positions in the national ranking, going from #13,964 to #15,455.
FAQ
Dibiase surname: questions and answers
How many people in the U.S. have the surname Dibiase?
Name Census estimates that about 2,094 living Americans carry the surname Dibiase. Using the current population baseline, that works out to roughly 1 in 163,684 residents.
How common is Dibiase?
Dibiase ranks #15,455 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.61 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 1,826 people with the surname Dibiase. That is different from the site's living-bearer estimate (2,094), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.61 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.61 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 Dibiase.
Has Dibiase become more or less common over time?
Between 2010 and 2020, the surname Dibiase went from 2,160 recorded bearers to 1,826. That is a decrease of 334 (-15.5%). In the national ranking it fell from #13,964 to #15,455.
What does the Census say about the background of Dibiase?
Among Census respondents with the surname Dibiase, the largest self-reported group is White at 93.4%. The next largest groups are Hispanic (3.3%) and Two or More Races (1.7%). 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 Dibiase in the 2020 Census, accounting for 93.4% (1,706 people in the source table).
What is the full ancestry breakdown?
Dibiase appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.4%), Hispanic (3.3%), Two or More Races (1.7%). 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 Dibiase (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 Dibiase mean?
From Italian, meaning "of Biase," referring to a person from a place called Biase or a descendant of someone named Biase. 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 Dibiase (0.61 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 have the last name Dibiase?
Want to know how many Americans have the surname Dibiase? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.