2010
#157,234
National surname rank
Recorded bearers 103
First available Census row
Per 100,000 0.03
Very Rare Last name
Ubaldi
A surname of Italian origin meaning someone from the town of Ubaldo.
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Ubaldi. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Ubaldi 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
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Ubaldi in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Ubaldi, the largest self-reported group is White at 88.0%. The next largest groups are Hispanic (5.6%) and Two or More Races (3.7%).
Origin
Meaning and origin of Ubaldi
The surname Ubaldi originated in Italy, with the earliest recorded instances dating back to the 12th century. It is believed to have its roots in the Latin name "Ubaldus," which means "prosperous" or "wealthy." The name was particularly prevalent in the regions of Tuscany and Umbria, where it was often associated with noble families and landowners.
One of the earliest known references to the name Ubaldi can be found in the records of the Archdiocese of Florence, where an individual named Ubaldo di Guglielmo was mentioned in a document from 1187. This document detailed a land transaction, indicating that the Ubaldi family likely held significant property and influence in the area.
During the 13th and 14th centuries, the Ubaldi name gained further prominence in the city of Gubbio, located in the province of Perugia, Umbria. Several members of the Ubaldi family held influential positions within the city's government and religious institutions. Notably, Ubaldo Ubaldi (1257-1329) served as the Bishop of Gubbio from 1319 until his death, leaving a lasting legacy in the region.
In the Renaissance era, the Ubaldi name was associated with scholars and artists. One notable figure was Baldo degli Ubaldi (1327-1400), a renowned jurist and legal scholar who taught at the universities of Perugia, Florence, and Padua. His influential legal writings and teachings earned him the moniker "The Single-Eyed" due to his exceptional intellect and deep understanding of Roman law.
Another prominent figure bearing the Ubaldi surname was Guido Ubaldo del Monte (1545-1607), an Italian mathematician and engineer. He made significant contributions to the field of mechanics and is best known for his work on projectile motion and the study of parabolic trajectories.
In more recent history, the Ubaldi name has been carried by individuals across various fields, including Antonio Ubaldi (1923-2016), an Italian actor and voice actor known for his work in films, television, and radio. Additionally, Guido Ubaldi (1886-1964) was an Italian sculptor and medalist, renowned for his intricate medal designs and sculptural works.
Throughout its long history, the surname Ubaldi has maintained a strong connection to its Italian roots, reflecting the rich cultural heritage and traditions of the regions where it originated. While the name may have evolved and spread across different parts of the world, its essence remains deeply rooted in the prosperous and influential families that carried it through the centuries.
Demographics
Ancestry and ethnicity for Ubaldi
Among Census respondents with the surname Ubaldi, the largest self-reported group is White at 88.0%. The next largest groups are Hispanic (5.6%) and Two or More Races (3.7%).
The bar chart below shows how Ubaldi 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 Ubaldi surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.0% · 95
- Hispanic or Latino5.6% · 6
- Two or more races3.7% · 4
- Asian and Pacific Islander1.9% · 2
- Black or African American0.9% · 1
Timeline
Historical Census data for Ubaldi
Ubaldi appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#150,935
National surname rank
Recorded bearers 108
+5 bearers (+4.9%)
Per 100,000 0.04
Rank movement Up 6,299 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #157,234 | 103 | 0.03 | First available Census row | First available Census row |
| 2020 | #150,935 | 108 | 0.04 | +5 bearers (+4.9%) | Up 6,299 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 Ubaldi 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 | #157,234 | #150,935 | 4.0% |
| Count | 103 | 108 | 4.9% |
| Per 100K | 0.03 | 0.04 | 20.4% |
Between the 2010 and 2020 Census, the number of Ubaldi bearers went from 103 to 108 (+4.9% change). The surname moved up 6,299 positions in the national ranking, going from #157,234 to #150,935.
FAQ
Ubaldi surname: questions and answers
How many people in the U.S. have the surname Ubaldi?
Name Census estimates that about 124 living Americans carry the surname Ubaldi. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Ubaldi?
Ubaldi ranks #150,935 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 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 108 people with the surname Ubaldi. That is different from the site's living-bearer estimate (124), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 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 Ubaldi.
Has Ubaldi become more or less common over time?
Between 2010 and 2020, the surname Ubaldi went from 103 recorded bearers to 108. That is an increase of 5 (+4.9%). In the national ranking it rose from #157,234 to #150,935.
What does the Census say about the background of Ubaldi?
Among Census respondents with the surname Ubaldi, the largest self-reported group is White at 88.0%. The next largest groups are Hispanic (5.6%) and Two or More Races (3.7%). 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 Ubaldi in the 2020 Census, accounting for 88.0% (95 people in the source table).
What is the full ancestry breakdown?
Ubaldi appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.0%), Hispanic (5.6%), Two or More Races (3.7%). 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 Ubaldi (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 Ubaldi mean?
A surname of Italian origin meaning someone from the town of Ubaldo. 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 Ubaldi (0.04 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 Ubaldi?
For a quick modern take, check how many Americans have the surname Ubaldi on our sister site HowManyOfMe.org.