How Common Is the Last Name Borromeo?
An estimated 1,417 people in the United States share the surname Borromeo. That's about 1 in 241,887 Americans. This data comes from the 2020 U.S. Census Bureau surname frequency tables.
This page covers the Borromeo surname's frequency in the U.S. population, its rank among all American surnames, and a breakdown of ancestry and ethnicity data from the Census. You can also check how many people share any first + last name combination involving Borromeo.
Estimated Americans with this Surname
1,417
About 1 in 241,887 people in the U.S.
Census Rank
#21,548
Frequency Rate
0.41
per 100,000 people
Census Count
1,236
2020 Census
Data Source
2020
U.S. Census Bureau
Ancestry and Ethnicity for Borromeo
The Borromeo surname is most commonly associated with people who identify as Asian/Pacific Islander (69.42%). The next largest groups are White (11.81%) and Hispanic (8.58%).
Self-reported race and ethnicity from the 2020 U.S. Census Bureau surname tables. Some categories may be suppressed for privacy when sample sizes are small.
Historical Census Data for Borromeo
Borromeo appears in 3 published Census surname releases on this site (2000, 2010, 2020). From 2000 to 2020, the raw count became more common and the per-100,000 rate became more common. Its best published rank was #21,548 in 2020.
Between the 2010 and 2020 census releases, the surname Borromeo became more common in the United States. Both the raw count and the population-adjusted frequency moved up.
The line to watch most closely is per 100,000 people. That adjusts for overall population growth, so it shows whether Borromeo became a bigger or smaller share of the country, not just whether the raw count went up.
Census Count Over Time
Raw Census count in each published surname release.
835 to 1,236
Per 100,000 Over Time
Population-adjusted frequency, which is usually the cleaner trend line.
0.31 to 0.41
Release-by-release summary
Each row is a published Census surname table for Borromeo. The change column compares each release to the one before it.
| Year | Rank | Count | Per 100K | Change vs prior release | Largest recorded group |
|---|---|---|---|---|---|
| 2000 | #27,235 | 835 | 0.31 | Baseline release | Asian/Pacific Islander (72.10%) |
| 2010 | #22,838 | 1,121 | 0.38 |
Count 29.24%
Rate 20.29% | Asian/Pacific Islander (70.74%) |
| 2020 Latest | #21,548 | 1,236 | 0.41 |
Count 9.76%
Rate 8.45% | Asian/Pacific Islander (69.42%) |
If the raw count rose but the per-100,000 number fell, the surname still became less common relative to the size of the U.S. population. That is why the frequency rate usually tells the clearer story.
Recorded ancestry change
These percentages show how the Census profile for this surname shifted across the published surveys on this site.
| Ancestry | 2020 | 2010 | 2000 | Change Since 2000 |
|---|---|---|---|---|
| White | 11.81% | 10.44% | 15.21% | -25.15% |
| Black | 0.08% | N/A | N/A | N/A |
| Asian and Pacific Islander | 69.42% | 70.74% | 72.10% | -3.79% |
| American Indian and Alaska Native | 3.32% | N/A | N/A | N/A |
| Two or More Races | 6.80% | 7.31% | 5.51% | 20.90% |
| Hispanic | 8.58% | 8.56% | 4.07% | 71.26% |
These percentages come from self-reported Census data. They describe how the recorded makeup of people using the surname Borromeo changed from 2000 through 2020, not the deeper family origin of every bearer of the name.
First Name + Borromeo Combinations
How many people share a full name with Borromeo as the last name? Click a combination below to see the estimate, or search any pairing.
Borromeo Surname: Questions and Answers
How common is the last name Borromeo?
Borromeo is the #21,548 most common surname in the United States, with an estimated 1,417 people sharing this last name. It appears at a rate of 0.41 per 100,000 Americans.
Has the surname Borromeo become more or less common over time?
In the published Census surname tables on this site, Borromeo moved from 835 people in 2000 to 1,236 in 2020. The more important line is the population-adjusted rate, which changed from 0.31 to 0.41 per 100,000.
Why can the raw count go up while the rate per 100,000 goes down?
Because the total U.S. population can grow faster than the surname itself. A surname can have more people in absolute numbers but still make up a smaller share of the country, which is why the per-100,000 figure often tells the clearer story.
What does the ancestry change table show for Borromeo?
It compares the published Census demographic mix for Borromeo across releases on this page. That helps you see whether the recorded share of the surname shifted between groups over time, but it still does not tell the full family history of every person with the name.
What does 0.41 per 100,000 mean?
It means that if you picked 100,000 people in the United States at random, about 0.41 of them would have the surname Borromeo. This is usually the clearest way to compare surnames because it adjusts for the size of the total population.
What ethnicity is the surname Borromeo?
The Borromeo surname is most commonly associated with people who identify as Asian/Pacific Islander (69.42%). The next largest groups are White (11.81%) and Hispanic (8.58%). This data comes from the 2020 U.S. Census Bureau surname tables, which include self-reported race and ethnicity breakdowns.
Does the ancestry table tell the exact family origin of everyone named Borromeo?
No. It shows how people with the surname Borromeo identified in the Census. That is useful context, but it does not prove the deeper family history, nationality, or origin story of every person with the name.
How many people named [First Name] Borromeo are there?
We can estimate any first + last name combination. Popular examples: Michael Borromeo, James Borromeo, John Borromeo. Search any combination on our homepage.
Where does this surname data come from?
Surname frequency data comes from the 2020 U.S. Census Bureau decennial surname tables. These list every surname appearing in the Census along with frequency rates and demographic breakdowns. Full methodology.
Search for a full name combination
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