2000
#140,756
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Taddia
An Italian surname derived from the given name Taddeo or Thaddeus.
According to the 2020 US Census Bureau surname tables, roughly 116 Americans carry the last name Taddia. That puts it at #155,270 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,954,779 residents).
This page is the full Name Census profile for the Taddia 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
116
1 in 2,954,779
Census rank
#155,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
101
very rare in the US
Popularity narrative
The Census Bureau recorded 101 bearers of the surname Taddia in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155270th position in the national surname ranking.
Among Census respondents with the surname Taddia, the largest self-reported group is White at 92.1%. The next largest groups are Two or More Races (4.0%) and American Indian/Alaska Native (2.0%).
Origin
Meaning and origin of Taddia
The surname Taddia originated in Italy, with its earliest known records dating back to the 12th century. It is believed to have derived from the Latin word "tardius," meaning "tardy" or "slow." This name may have been given as a nickname to someone perceived as unhurried or deliberate in their actions.
One of the earliest known references to the name Taddia can be found in a document from the city of Verona, dated 1187, which mentions a certain Guglielmo Taddia. Another early record comes from the city of Ferrara, where a Niccolò Taddia is mentioned in a document from 1243.
The Taddia family seems to have had a presence in various regions of northern Italy, including Veneto, Lombardy, and Emilia-Romagna. In the 14th century, there are records of a Taddia family residing in the town of Castel Goffredo, near Mantua.
One notable figure bearing this surname was Giacomo Taddia (1516-1579), a renowned Italian architect and engineer who worked on several major projects, including the fortifications of the city of Parma.
In the 16th century, a branch of the Taddia family settled in the town of Cesena, in the Emilia-Romagna region. Here, we find records of a certain Girolamo Taddia (1530-1605), who served as a local magistrate and was involved in the administration of the town.
Another individual of note was Giovanni Battista Taddia (1675-1745), a Jesuit priest and scholar from Milan who authored several works on theology and philosophy.
Moving into the 18th century, we encounter Pietro Taddia (1720-1792), a noted painter and fresco artist from Verona, whose works can still be admired in various churches and palaces across northern Italy.
In the 19th century, a prominent figure was Antonio Taddia (1810-1882), a lawyer and politician from Padua who served as a member of the Italian parliament during the early years of the unified Kingdom of Italy.
While the Taddia surname is not among the most common in Italy today, it has a rich history spanning several centuries and has produced individuals of note in various fields, from architecture and engineering to the arts and politics.
Demographics
Ancestry and ethnicity for Taddia
Among Census respondents with the surname Taddia, the largest self-reported group is White at 92.1%. The next largest groups are Two or More Races (4.0%) and American Indian/Alaska Native (2.0%).
The bar chart below shows how Taddia 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 Taddia surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.1% · 93
- Two or more races4.0% · 4
- American Indian and Alaska Native2.0% · 2
- Black or African American1.0% · 1
- Hispanic or Latino1.0% · 1
Timeline
Historical Census data for Taddia
Taddia 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
#147,253
National surname rank
Recorded bearers 112
+3 bearers (+2.8%)
Per 100,000 0.04
Rank movement Down 6,497 places
2020
#155,270
National surname rank
Recorded bearers 101
-11 bearers (-9.8%)
Per 100,000 0.03
Rank movement Down 8,017 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #140,756 | 109 | 0.04 | First available Census row | First available Census row |
| 2010 | #147,253 | 112 | 0.04 | +3 bearers (+2.8%) | Down 6,497 places |
| 2020 | #155,270 | 101 | 0.03 | -11 bearers (-9.8%) | Down 8,017 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 Taddia 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 | #147,253 | #155,270 | -5.4% |
| Count | 112 | 101 | -9.8% |
| Per 100K | 0.04 | 0.03 | -15.5% |
Between the 2010 and 2020 Census, the number of Taddia bearers went from 112 to 101 (-9.8% change). The surname moved down 8,017 positions in the national ranking, going from #147,253 to #155,270.
FAQ
Taddia surname: questions and answers
How many people in the U.S. have the surname Taddia?
Name Census estimates that about 116 living Americans carry the surname Taddia. Using the current population baseline, that works out to roughly 1 in 2,954,779 residents.
How common is Taddia?
Taddia ranks #155,270 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 101 people with the surname Taddia. That is different from the site's living-bearer estimate (116), 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 Taddia.
Has Taddia become more or less common over time?
Between 2010 and 2020, the surname Taddia went from 112 recorded bearers to 101. That is a decrease of 11 (-9.8%). In the national ranking it fell from #147,253 to #155,270.
What does the Census say about the background of Taddia?
Among Census respondents with the surname Taddia, the largest self-reported group is White at 92.1%. The next largest groups are Two or More Races (4.0%) and American Indian/Alaska Native (2.0%). 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 Taddia in the 2020 Census, accounting for 92.1% (93 people in the source table).
What is the full ancestry breakdown?
Taddia appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.1%), Two or More Races (4.0%), American Indian/Alaska Native (2.0%). 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 Taddia (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 Taddia mean?
An Italian surname derived from the given name Taddeo or Thaddeus. 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 Taddia (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 common is the surname Taddia?
If you just want to know how many people have the surname Taddia, HowManyOfMe.org gives you the headline number in one glance.