2000
#9,265
National surname rank
Recorded bearers 3,236
First available Census row
Per 100,000 1.20
Rare Last name
Dilorenzo
An Italian surname referring to someone from the town of Lorenzo or meaning "of Lorenzo."
According to the 2020 US Census Bureau surname tables, roughly 3,611 Americans carry the last name Dilorenzo. That puts it at #9,817 in the national surname ranking, appearing at a frequency of 1.05 per 100,000 people (about 1 in 94,920 residents).
This page is the full Name Census profile for the Dilorenzo 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.
For British records, Name Census UK has a British surname profile for Dilorenzo with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
3.6K
1 in 94,920
Census rank
#9,817
2020 decennial data
Per 100,000
1.1
Frequency rate
Recorded bearers
3.1K
rare in the US
Popularity narrative
The Census Bureau recorded 3,149 bearers of the surname Dilorenzo in its 2020 decennial surname file. At a rate of 1.05 per 100,000 residents, it holds the 9817th position in the national surname ranking.
Among Census respondents with the surname Dilorenzo, the largest self-reported group is White at 89.9%. The next largest groups are Hispanic (6.4%) and Two or More Races (2.3%).
Origin
Meaning and origin of Dilorenzo
The surname DiLorenzo has its origins in Italy, emerging during the late medieval period around the 13th or 14th century. It is derived from the personal name Lorenzo, which itself comes from the Latin Laurentius, meaning "from Laurentum" or "laurel-crowned." The prefix "Di" indicates the name's association with a place of origin or ancestry.
One of the earliest recorded instances of the DiLorenzo surname can be found in the Sicilian town of Monreale, where a certain Vincenzo DiLorenzo was mentioned in a document from the late 15th century. This suggests that the name may have initially taken root in the island of Sicily before spreading to other parts of Italy.
In the 16th century, the DiLorenzo name appeared in various historical records across different regions of Italy, including Naples, Calabria, and Tuscany. This indicates that the surname had become more widely dispersed by this time, potentially due to migration patterns or the establishment of new family branches.
A notable bearer of the DiLorenzo surname was Giovanni Battista DiLorenzo, a 17th-century Italian painter from Naples (1597-1637). His works, primarily religious in nature, can still be found in churches and museums throughout Italy.
Another significant figure was Vincenzo DiLorenzo (1790-1857), a Neapolitan philosopher and educator who made contributions to the fields of metaphysics and epistemology. His writings and teachings influenced generations of Italian intellectuals.
In the 19th century, the DiLorenzo surname gained further prominence with the birth of Nicola DiLorenzo (1831-1911), an Italian politician and statesman who served as a deputy in the Kingdom of Italy's parliament.
During the early 20th century, the DiLorenzo name was associated with the town of Mirabella Imbaccari in Sicily, where a notable family carried the surname. This family included Salvatore DiLorenzo (1905-1991), a prominent lawyer and judge who served in the Sicilian legal system.
The surname DiLorenzo has also been linked to various place names throughout Italy, such as the town of Laurenzana in the Basilicata region, which may have influenced the name's origins or provided a connection to certain family lineages.
Demographics
Ancestry and ethnicity for Dilorenzo
Among Census respondents with the surname Dilorenzo, the largest self-reported group is White at 89.9%. The next largest groups are Hispanic (6.4%) and Two or More Races (2.3%).
The bar chart below shows how Dilorenzo 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 Dilorenzo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.9% · 2,830
- Hispanic or Latino6.4% · 202
- Two or more races2.3% · 71
- Asian and Pacific Islander0.9% · 28
- Black or African American0.4% · 12
- American Indian and Alaska Native0.2% · 6
Timeline
Historical Census data for Dilorenzo
Dilorenzo 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
#9,701
National surname rank
Recorded bearers 3,344
+108 bearers (+3.3%)
Per 100,000 1.13
Rank movement Down 436 places
2020
#9,817
National surname rank
Recorded bearers 3,149
-195 bearers (-5.8%)
Per 100,000 1.05
Rank movement Down 116 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #9,265 | 3,236 | 1.20 | First available Census row | First available Census row |
| 2010 | #9,701 | 3,344 | 1.13 | +108 bearers (+3.3%) | Down 436 places |
| 2020 | #9,817 | 3,149 | 1.05 | -195 bearers (-5.8%) | Down 116 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 Dilorenzo 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 | #9,701 | #9,817 | -1.2% |
| Count | 3,344 | 3,149 | -5.8% |
| Per 100K | 1.13 | 1.05 | -6.8% |
Between the 2010 and 2020 Census, the number of Dilorenzo bearers went from 3,344 to 3,149 (-5.8% change). The surname moved down 116 positions in the national ranking, going from #9,701 to #9,817.
FAQ
Dilorenzo surname: questions and answers
How many people in the U.S. have the surname Dilorenzo?
Name Census estimates that about 3,611 living Americans carry the surname Dilorenzo. Using the current population baseline, that works out to roughly 1 in 94,920 residents.
How common is Dilorenzo?
Dilorenzo ranks #9,817 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.05 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 3,149 people with the surname Dilorenzo. That is different from the site's living-bearer estimate (3,611), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.05 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.05 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 Dilorenzo.
Has Dilorenzo become more or less common over time?
Between 2010 and 2020, the surname Dilorenzo went from 3,344 recorded bearers to 3,149. That is a decrease of 195 (-5.8%). In the national ranking it fell from #9,701 to #9,817.
What does the Census say about the background of Dilorenzo?
Among Census respondents with the surname Dilorenzo, the largest self-reported group is White at 89.9%. The next largest groups are Hispanic (6.4%) and Two or More Races (2.3%). 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 Dilorenzo in the 2020 Census, accounting for 89.9% (2,830 people in the source table).
What is the full ancestry breakdown?
Dilorenzo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.9%), Hispanic (6.4%), Two or More Races (2.3%). 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 Dilorenzo (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 Dilorenzo mean?
An Italian surname referring to someone from the town of Lorenzo or meaning "of Lorenzo." 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 Dilorenzo (1.05 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 Americans have the surname Dilorenzo?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.