2000
#7,702
National surname rank
Recorded bearers 3,983
First available Census row
Per 100,000 1.48
Rare Last name
Dimarco
An Italian occupational surname referring to a person who works on or owns a farm or estate.
According to the 2020 US Census Bureau surname tables, roughly 4,532 Americans carry the last name Dimarco. That puts it at #8,043 in the national surname ranking, appearing at a frequency of 1.32 per 100,000 people (about 1 in 75,630 residents).
This page is the full Name Census profile for the Dimarco 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 Dimarco with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
4.5K
1 in 75,630
Census rank
#8,043
2020 decennial data
Per 100,000
1.3
Frequency rate
Recorded bearers
4.0K
rare in the US
Popularity narrative
The Census Bureau recorded 3,952 bearers of the surname Dimarco in its 2020 decennial surname file. At a rate of 1.32 per 100,000 residents, it holds the 8043rd position in the national surname ranking.
Among Census respondents with the surname Dimarco, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (6.3%) and Two or More Races (1.3%).
Origin
Meaning and origin of Dimarco
The surname DiMarco originated in Italy, with its roots tracing back to the medieval period. It is a locational surname derived from the Italian place name Marco, which is thought to have been derived from the ancient Roman personal name Marcus. The prefix "di" signifies "from" or "of," indicating that the name referred to someone from the town or region of Marco.
One of the earliest recorded instances of the surname DiMarco can be found in the historical documents of the Republic of Venice, dating back to the 13th century. The name appeared in various forms, such as de Marco, di Marco, and Dimarco, reflecting the fluid nature of surname spellings during that time period.
In the 14th century, a prominent figure named Giulio DiMarco was a renowned merchant and diplomat in the city of Florence. His name is mentioned in several trade records and diplomatic correspondences from that era.
During the Renaissance period, the DiMarco family played a significant role in the arts and culture of Italy. Francesco DiMarco, born in 1460 in Venice, was a celebrated painter and fresco artist whose works adorned numerous churches and palaces throughout the region.
In the 17th century, the name gained prominence in the realm of literature with the poet and playwright Carlo DiMarco (1598-1678). His collection of sonnets and dramatic works were widely acclaimed and influenced the literary landscape of the time.
Another notable figure bearing the surname DiMarco was Vincenzo DiMarco (1734-1810), a renowned architect and engineer. He was responsible for designing several landmark buildings and infrastructure projects in his native city of Naples.
Throughout the centuries, the DiMarco surname has been associated with various notable individuals across various fields, including politics, academia, and the arts. While the name has evolved and spread to different parts of the world due to migration, its Italian roots and rich historical legacy remain an integral part of its identity.
Demographics
Ancestry and ethnicity for Dimarco
Among Census respondents with the surname Dimarco, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (6.3%) and Two or More Races (1.3%).
The bar chart below shows how Dimarco 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 Dimarco surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.2% · 3,605
- Hispanic or Latino6.3% · 249
- Two or more races1.3% · 52
- Asian and Pacific Islander0.7% · 26
- Black or African American0.4% · 14
- American Indian and Alaska Native0.2% · 6
Timeline
Historical Census data for Dimarco
Dimarco 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
#7,763
National surname rank
Recorded bearers 4,275
+292 bearers (+7.3%)
Per 100,000 1.45
Rank movement Down 61 places
2020
#8,043
National surname rank
Recorded bearers 3,952
-323 bearers (-7.6%)
Per 100,000 1.32
Rank movement Down 280 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #7,702 | 3,983 | 1.48 | First available Census row | First available Census row |
| 2010 | #7,763 | 4,275 | 1.45 | +292 bearers (+7.3%) | Down 61 places |
| 2020 | #8,043 | 3,952 | 1.32 | -323 bearers (-7.6%) | Down 280 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 Dimarco 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 | #7,763 | #8,043 | -3.6% |
| Count | 4,275 | 3,952 | -7.6% |
| Per 100K | 1.45 | 1.32 | -8.8% |
Between the 2010 and 2020 Census, the number of Dimarco bearers went from 4,275 to 3,952 (-7.6% change). The surname moved down 280 positions in the national ranking, going from #7,763 to #8,043.
FAQ
Dimarco surname: questions and answers
How many people in the U.S. have the surname Dimarco?
Name Census estimates that about 4,532 living Americans carry the surname Dimarco. Using the current population baseline, that works out to roughly 1 in 75,630 residents.
How common is Dimarco?
Dimarco ranks #8,043 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 3,952 people with the surname Dimarco. That is different from the site's living-bearer estimate (4,532), 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 Dimarco.
Has Dimarco become more or less common over time?
Between 2010 and 2020, the surname Dimarco went from 4,275 recorded bearers to 3,952. That is a decrease of 323 (-7.6%). In the national ranking it fell from #7,763 to #8,043.
What does the Census say about the background of Dimarco?
Among Census respondents with the surname Dimarco, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (6.3%) and Two or More Races (1.3%). 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 Dimarco in the 2020 Census, accounting for 91.2% (3,605 people in the source table).
What is the full ancestry breakdown?
Dimarco appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.2%), Hispanic (6.3%), Two or More Races (1.3%). 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 Dimarco (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 Dimarco mean?
An Italian occupational surname referring to a person who works on or owns a farm or estate. 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 Dimarco (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 common is the surname Dimarco?
Want to know how many Americans have the surname Dimarco? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.