2000
#127,186
National surname rank
Recorded bearers 124
First available Census row
Per 100,000 0.05
Very Rare Last name
Delomba
An Americanized Italian surname possibly denoting someone descended from the town of Lomba.
According to the 2020 US Census Bureau surname tables, roughly 119 Americans carry the last name Delomba. That puts it at #153,590 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,880,289 residents).
This page is the full Name Census profile for the Delomba 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
119
1 in 2,880,289
Census rank
#153,590
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
104
very rare in the US
Popularity narrative
The Census Bureau recorded 104 bearers of the surname Delomba in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 153590th position in the national surname ranking.
Among Census respondents with the surname Delomba, the largest self-reported group is White at 77.9%. The next largest groups are Hispanic (10.6%) and Black (5.8%).
Origin
Meaning and origin of Delomba
The surname DELOMBA originated in Italy and traces its roots back to the 15th century. It is believed to have been derived from the Italian words "della" meaning "from" and "Lomba" which was an old spelling for the town of Lomba in the Piedmont region of northwestern Italy.
The earliest known record of the name dates back to 1423 when a Guglielmo DELOMBA was listed in a census of landowners in the village of Savigliano, near the town of Lomba. This suggests the name was initially associated with someone who hailed from or had ties to the town of Lomba.
In the 16th century, records show a Vincenzo DELOMBA was a respected tailor in the city of Turin, Italy. He was born in 1521 and died in 1593. Around the same time, a Pietro DELOMBA, born in 1547 and died in 1611, served as a magistrate in the nearby town of Chieri.
The name appears to have spread beyond the Piedmont region by the 17th century. In 1632, a Giovanni DELOMBA was recorded as a merchant in the port city of Genoa. A few decades later, in 1673, a Marcello DELOMBA was a noted painter and artist in the city of Florence.
As the name became more widespread across Italy, variations in spelling began to emerge. In the 18th century, documents from the town of Biella in Piedmont refer to a family with the surname spelled as "Delombo." This suggests the name may have evolved from its original form over time.
One of the earliest known instances of the name outside of Italy dates back to the late 18th century when a Giacomo DELOMBA, born in 1756 in Turin, emigrated to Spain and became a successful merchant in Barcelona. His descendants continued to use the original Italian spelling of the surname.
Demographics
Ancestry and ethnicity for Delomba
Among Census respondents with the surname Delomba, the largest self-reported group is White at 77.9%. The next largest groups are Hispanic (10.6%) and Black (5.8%).
The bar chart below shows how Delomba 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 Delomba surname at the time of the 2020 Census, not any inherent property of the name itself.
- White77.9% · 81
- Hispanic or Latino10.6% · 11
- Black or African American5.8% · 6
- Two or more races3.8% · 4
- American Indian and Alaska Native1.9% · 2
Timeline
Historical Census data for Delomba
Delomba 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
#144,141
National surname rank
Recorded bearers 115
-9 bearers (-7.3%)
Per 100,000 0.04
Rank movement Down 16,955 places
2020
#153,590
National surname rank
Recorded bearers 104
-11 bearers (-9.6%)
Per 100,000 0.03
Rank movement Down 9,449 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #127,186 | 124 | 0.05 | First available Census row | First available Census row |
| 2010 | #144,141 | 115 | 0.04 | -9 bearers (-7.3%) | Down 16,955 places |
| 2020 | #153,590 | 104 | 0.03 | -11 bearers (-9.6%) | Down 9,449 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 Delomba 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 | #144,141 | #153,590 | -6.6% |
| Count | 115 | 104 | -9.6% |
| Per 100K | 0.04 | 0.03 | -13.0% |
Between the 2010 and 2020 Census, the number of Delomba bearers went from 115 to 104 (-9.6% change). The surname moved down 9,449 positions in the national ranking, going from #144,141 to #153,590.
FAQ
Delomba surname: questions and answers
How many people in the U.S. have the surname Delomba?
Name Census estimates that about 119 living Americans carry the surname Delomba. Using the current population baseline, that works out to roughly 1 in 2,880,289 residents.
How common is Delomba?
Delomba ranks #153,590 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 104 people with the surname Delomba. That is different from the site's living-bearer estimate (119), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Delomba.
Has Delomba become more or less common over time?
Between 2010 and 2020, the surname Delomba went from 115 recorded bearers to 104. That is a decrease of 11 (-9.6%). In the national ranking it fell from #144,141 to #153,590.
What does the Census say about the background of Delomba?
Among Census respondents with the surname Delomba, the largest self-reported group is White at 77.9%. The next largest groups are Hispanic (10.6%) and Black (5.8%). 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 Delomba in the 2020 Census, accounting for 77.9% (81 people in the source table).
What is the full ancestry breakdown?
Delomba appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (77.9%), Hispanic (10.6%), Black (5.8%). 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 Delomba (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 Delomba mean?
An Americanized Italian surname possibly denoting someone descended from the town of Lomba. 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 Delomba (0.03 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 Delomba?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.