2000
#137,816
National surname rank
Recorded bearers 112
First available Census row
Per 100,000 0.04
Very Rare Last name
Adato
Sephardic Jewish surname derived from the Arabic "al-dat", meaning "the one of the religion" or "the pious one".
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Adato. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Adato 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
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Adato in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Adato, the largest self-reported group is White at 62.9%. The next largest groups are Hispanic (24.1%) and Asian/Pacific Islander (12.9%).
Origin
Meaning and origin of Adato
The surname Adato is of Italian origin, believed to have originated in the region of Tuscany during the late medieval period, around the 13th or 14th century. The name is thought to derive from the Italian word "adato," which means "suitable" or "appropriate." This suggests that the name may have been initially given as a descriptive nickname to someone who was considered well-suited or appropriate for a particular task or role.
One of the earliest recorded instances of the name Adato can be found in the archives of the city of Florence, where a certain Giovanni Adato is mentioned in a document dated around 1375. This suggests that the name had already become established as a surname by that time.
In the 15th century, a family bearing the name Adato was recorded as residing in the town of Siena, located in the heart of Tuscany. This family is believed to have been among the earliest bearers of the surname and may have played a role in its spread throughout the region.
During the Renaissance period, the Adato name gained some prominence in the world of art and culture. A notable figure was the painter and architect Baldassarre Adato, born in Florence in 1452 and known for his contributions to the design of several churches and palaces in the city.
In the 17th century, the Adato surname appeared in the records of the Catholic Church, with several individuals bearing the name serving as priests and members of religious orders. One such figure was Father Antonio Adato, a Franciscan friar who lived from 1610 to 1678 and was known for his charitable works and efforts to assist the poor.
As the centuries passed, the Adato name continued to be found throughout various regions of Italy, with families bearing the surname residing in cities like Rome, Naples, and Milan. In the 19th century, a notable bearer of the name was Giuseppe Adato, a politician and lawyer born in Venice in 1824, who served as a member of the Italian parliament during the early years of the unified Italian state.
While the Adato surname remains relatively uncommon, it has left its mark on Italian history and culture, reflecting the diverse origins and backgrounds that have contributed to the rich tapestry of Italian names and identities over the centuries.
Demographics
Ancestry and ethnicity for Adato
Among Census respondents with the surname Adato, the largest self-reported group is White at 62.9%. The next largest groups are Hispanic (24.1%) and Asian/Pacific Islander (12.9%).
The bar chart below shows how Adato 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 Adato surname at the time of the 2020 Census, not any inherent property of the name itself.
- White62.9% · 73
- Hispanic or Latino24.1% · 28
- Asian and Pacific Islander12.9% · 15
Timeline
Historical Census data for Adato
Adato 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
#135,593
National surname rank
Recorded bearers 124
+12 bearers (+10.7%)
Per 100,000 0.04
Rank movement Up 2,223 places
2020
#145,028
National surname rank
Recorded bearers 116
-8 bearers (-6.5%)
Per 100,000 0.04
Rank movement Down 9,435 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #137,816 | 112 | 0.04 | First available Census row | First available Census row |
| 2010 | #135,593 | 124 | 0.04 | +12 bearers (+10.7%) | Up 2,223 places |
| 2020 | #145,028 | 116 | 0.04 | -8 bearers (-6.5%) | Down 9,435 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 Adato 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 | #135,593 | #145,028 | -7.0% |
| Count | 124 | 116 | -6.5% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Adato bearers went from 124 to 116 (-6.5% change). The surname moved down 9,435 positions in the national ranking, going from #135,593 to #145,028.
FAQ
Adato surname: questions and answers
How many people in the U.S. have the surname Adato?
Name Census estimates that about 133 living Americans carry the surname Adato. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Adato?
Adato ranks #145,028 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 116 people with the surname Adato. That is different from the site's living-bearer estimate (133), 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 Adato.
Has Adato become more or less common over time?
Between 2010 and 2020, the surname Adato went from 124 recorded bearers to 116. That is a decrease of 8 (-6.5%). In the national ranking it fell from #135,593 to #145,028.
What does the Census say about the background of Adato?
Among Census respondents with the surname Adato, the largest self-reported group is White at 62.9%. The next largest groups are Hispanic (24.1%) and Asian/Pacific Islander (12.9%). 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 Adato in the 2020 Census, accounting for 62.9% (73 people in the source table).
What is the full ancestry breakdown?
Adato appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (62.9%), Hispanic (24.1%), Asian/Pacific Islander (12.9%). 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 Adato (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 Adato mean?
Sephardic Jewish surname derived from the Arabic "al-dat", meaning "the one of the religion" or "the pious one". 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 Adato (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 are called Adato?
For a quick modern take, check how many Americans have the surname Adato on our sister site HowManyOfMe.org.