2000
#12,367
National surname rank
Recorded bearers 2,304
First available Census row
Per 100,000 0.85
Rare Last name
Digirolamo
An Italian surname referring to someone from the town of Gerolamo or a descendant of Saint Gerolamo.
According to the 2020 US Census Bureau surname tables, roughly 2,222 Americans carry the last name Digirolamo. That puts it at #14,709 in the national surname ranking, appearing at a frequency of 0.65 per 100,000 people (about 1 in 154,255 residents).
This page is the full Name Census profile for the Digirolamo 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
2.2K
1 in 154,255
Census rank
#14,709
2020 decennial data
Per 100,000
0.6
Frequency rate
Recorded bearers
1.9K
rare in the US
Popularity narrative
The Census Bureau recorded 1,938 bearers of the surname Digirolamo in its 2020 decennial surname file. At a rate of 0.65 per 100,000 residents, it holds the 14709th position in the national surname ranking.
Among Census respondents with the surname Digirolamo, the largest self-reported group is White at 91.7%. The next largest groups are Hispanic (5.1%) and Two or More Races (2.4%).
Origin
Meaning and origin of Digirolamo
The surname DIGIROLAMO is of Italian origin, originating in the southern regions of Italy during the late medieval period. The name is derived from the combination of two Italian words: "di" meaning "of," and "Girolamo," which is the Italian form of the name "Jerome." This suggests that the name may have initially referred to someone from a particular locality associated with Saint Jerome, or who was devoted to the saint.
One of the earliest recorded instances of the surname can be found in a 14th-century census record from the town of Salerno, located in the Campania region of southern Italy. This record lists a "Giovanni di Girolamo," indicating that the surname was already in use by that time.
In the 15th century, the name appears in various historical documents from the Kingdom of Naples, which encompassed much of southern Italy at the time. These documents mention individuals with the surname DIGIROLAMO holding positions of importance, such as landowners and merchants.
A notable early bearer of the name was Antonio DiGirolamo, a renowned scholar and philosopher who lived in Naples during the late 15th century. His work on classical literature and philosophy was highly influential in Renaissance Italy.
During the 16th century, the surname spread to other parts of Italy, particularly the central regions. One of the earliest known bearers outside of southern Italy was Giulio DiGirolamo, a prominent architect and engineer from Rome. He was responsible for the design and construction of several notable buildings in the city, including the Church of San Gregorio al Celio.
In the 17th century, the surname DIGIROLAMO appears in the records of the Venetian Republic, where members of the family were involved in the lucrative spice trade with the East. One such individual was Marco DiGirolamo, a wealthy merchant who made significant contributions to the city's infrastructure and cultural institutions.
As the centuries passed, the DIGIROLAMO surname continued to be represented across various fields, including the arts, sciences, and politics. In the 19th century, Giuseppe DiGirolamo was a renowned painter from Naples whose works are still exhibited in galleries throughout Italy.
Throughout its history, the DIGIROLAMO surname has been associated with individuals who have made significant contributions to their respective fields, reflecting the diverse backgrounds and accomplishments of those who bear this name.
Demographics
Ancestry and ethnicity for Digirolamo
Among Census respondents with the surname Digirolamo, the largest self-reported group is White at 91.7%. The next largest groups are Hispanic (5.1%) and Two or More Races (2.4%).
The bar chart below shows how Digirolamo 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 Digirolamo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.7% · 1,777
- Hispanic or Latino5.1% · 99
- Two or more races2.4% · 47
- Black or African American0.5% · 9
- Asian and Pacific Islander0.3% · 6
Timeline
Historical Census data for Digirolamo
Digirolamo 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
#12,835
National surname rank
Recorded bearers 2,399
+95 bearers (+4.1%)
Per 100,000 0.81
Rank movement Down 468 places
2020
#14,709
National surname rank
Recorded bearers 1,938
-461 bearers (-19.2%)
Per 100,000 0.65
Rank movement Down 1,874 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #12,367 | 2,304 | 0.85 | First available Census row | First available Census row |
| 2010 | #12,835 | 2,399 | 0.81 | +95 bearers (+4.1%) | Down 468 places |
| 2020 | #14,709 | 1,938 | 0.65 | -461 bearers (-19.2%) | Down 1,874 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 Digirolamo 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 | #12,835 | #14,709 | -14.6% |
| Count | 2,399 | 1,938 | -19.2% |
| Per 100K | 0.81 | 0.65 | -20.0% |
Between the 2010 and 2020 Census, the number of Digirolamo bearers went from 2,399 to 1,938 (-19.2% change). The surname moved down 1,874 positions in the national ranking, going from #12,835 to #14,709.
FAQ
Digirolamo surname: questions and answers
How many people in the U.S. have the surname Digirolamo?
Name Census estimates that about 2,222 living Americans carry the surname Digirolamo. Using the current population baseline, that works out to roughly 1 in 154,255 residents.
How common is Digirolamo?
Digirolamo ranks #14,709 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.65 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 1,938 people with the surname Digirolamo. That is different from the site's living-bearer estimate (2,222), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.65 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.65 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 Digirolamo.
Has Digirolamo become more or less common over time?
Between 2010 and 2020, the surname Digirolamo went from 2,399 recorded bearers to 1,938. That is a decrease of 461 (-19.2%). In the national ranking it fell from #12,835 to #14,709.
What does the Census say about the background of Digirolamo?
Among Census respondents with the surname Digirolamo, the largest self-reported group is White at 91.7%. The next largest groups are Hispanic (5.1%) and Two or More Races (2.4%). 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 Digirolamo in the 2020 Census, accounting for 91.7% (1,777 people in the source table).
What is the full ancestry breakdown?
Digirolamo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.7%), Hispanic (5.1%), Two or More Races (2.4%). 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 Digirolamo (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 Digirolamo mean?
An Italian surname referring to someone from the town of Gerolamo or a descendant of Saint Gerolamo. 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 Digirolamo (0.65 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 Digirolamo?
Want to know how many Americans have the surname Digirolamo? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.