2000
#33,876
National surname rank
Recorded bearers 634
First available Census row
Per 100,000 0.24
Rare Last name
Altidor
A surname derived from a medieval personal name of uncertain origin, possibly altered from an older Germanic name.
According to the 2020 US Census Bureau surname tables, roughly 1,587 Americans carry the last name Altidor. That puts it at #19,527 in the national surname ranking, appearing at a frequency of 0.46 per 100,000 people (about 1 in 215,976 residents).
This page is the full Name Census profile for the Altidor 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
1.6K
1 in 215,976
Census rank
#19,527
2020 decennial data
Per 100,000
0.5
Frequency rate
Recorded bearers
1.4K
rare in the US
Popularity narrative
The Census Bureau recorded 1,384 bearers of the surname Altidor in its 2020 decennial surname file. At a rate of 0.46 per 100,000 residents, it holds the 19527th position in the national surname ranking.
Among Census respondents with the surname Altidor, the largest self-reported group is Black at 94.2%. The next largest groups are Hispanic (2.1%) and Two or More Races (2.1%).
Origin
Meaning and origin of Altidor
The surname Altidor has its origins in the Iberian Peninsula, particularly in the regions of Spain and Portugal. It emerged during the medieval period, likely between the 12th and 15th centuries. The name is believed to be derived from a combination of the Latin words "altus" meaning high or lofty, and "dor" which is a suffix indicating a person or place.
One of the earliest recorded mentions of the name Altidor can be found in a Spanish manuscript from the 13th century, where it referred to a noble family residing in the region of Andalusia. This document suggests that the name may have originated as a descriptive term for a person or place located on a high elevation.
During the 15th century, records indicate the presence of individuals bearing the name Altidor in the city of Seville, where they were involved in various trades and professions. Notable among them was Juan Altidor, a renowned artisan who specialized in intricate metal works, born in 1437 and died in 1502.
As the Spanish Empire expanded its influence in the 16th and 17th centuries, the name Altidor began to spread across different regions. In the late 16th century, a Portuguese navigator named Pedro Altidor embarked on several expeditions to the Americas, contributing to the exploration and mapping of the New World.
In the 18th century, a prominent figure named María Altidor, born in 1723 and died in 1798, gained recognition for her philanthropic efforts in the city of Madrid. She established several charitable institutions aimed at supporting underprivileged families and children.
Another notable individual was Javier Altidor, a Spanish military officer who served during the Napoleonic Wars. Born in 1779 and died in 1842, he played a crucial role in the defense of Spain against the French invasion, earning him widespread respect and recognition.
Throughout its history, the surname Altidor has undergone various spellings and variations, such as Altidore, Altidoro, and Altidoor, reflecting the linguistic and cultural diversity of the regions where it was present. Additionally, the name has been associated with several place names, including the town of Altidor in the Spanish province of Cádiz, which may have contributed to the surname's origin.
Demographics
Ancestry and ethnicity for Altidor
Among Census respondents with the surname Altidor, the largest self-reported group is Black at 94.2%. The next largest groups are Hispanic (2.1%) and Two or More Races (2.1%).
The bar chart below shows how Altidor 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 Altidor surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American94.2% · 1,304
- Hispanic or Latino2.1% · 29
- Two or more races2.1% · 29
- White1.2% · 16
- Asian and Pacific Islander0.3% · 4
- American Indian and Alaska Native0.1% · 2
Timeline
Historical Census data for Altidor
Altidor 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
#23,881
National surname rank
Recorded bearers 1,057
+423 bearers (+66.7%)
Per 100,000 0.36
Rank movement Up 9,995 places
2020
#19,527
National surname rank
Recorded bearers 1,384
+327 bearers (+30.9%)
Per 100,000 0.46
Rank movement Up 4,354 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #33,876 | 634 | 0.24 | First available Census row | First available Census row |
| 2010 | #23,881 | 1,057 | 0.36 | +423 bearers (+66.7%) | Up 9,995 places |
| 2020 | #19,527 | 1,384 | 0.46 | +327 bearers (+30.9%) | Up 4,354 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 Altidor 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 | #23,881 | #19,527 | 18.2% |
| Count | 1,057 | 1,384 | 30.9% |
| Per 100K | 0.36 | 0.46 | 28.6% |
Between the 2010 and 2020 Census, the number of Altidor bearers went from 1,057 to 1,384 (+30.9% change). The surname moved up 4,354 positions in the national ranking, going from #23,881 to #19,527.
FAQ
Altidor surname: questions and answers
How many people in the U.S. have the surname Altidor?
Name Census estimates that about 1,587 living Americans carry the surname Altidor. Using the current population baseline, that works out to roughly 1 in 215,976 residents.
How common is Altidor?
Altidor ranks #19,527 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.46 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 1,384 people with the surname Altidor. That is different from the site's living-bearer estimate (1,587), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.46 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.46 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 Altidor.
Has Altidor become more or less common over time?
Between 2010 and 2020, the surname Altidor went from 1,057 recorded bearers to 1,384. That is an increase of 327 (+30.9%). In the national ranking it rose from #23,881 to #19,527.
What does the Census say about the background of Altidor?
Among Census respondents with the surname Altidor, the largest self-reported group is Black at 94.2%. The next largest groups are Hispanic (2.1%) and Two or More Races (2.1%). 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?
Black is the largest self-reported group for the surname Altidor in the 2020 Census, accounting for 94.2% (1,304 people in the source table).
What is the full ancestry breakdown?
Altidor appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (94.2%), Hispanic (2.1%), Two or More Races (2.1%). 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 Altidor (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 Altidor mean?
A surname derived from a medieval personal name of uncertain origin, possibly altered from an older Germanic name. 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 Altidor (0.46 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 Altidor?
See how common the surname Altidor is on HowManyOfMe.org, our sister site built around that single question.