2010
#146,201
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Ladrigan
Of Irish origin, possibly derived from the place name Ledrin, referring to someone from that locale.
According to the 2020 US Census Bureau surname tables, roughly 126 Americans carry the last name Ladrigan. That puts it at #149,446 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,720,273 residents).
This page is the full Name Census profile for the Ladrigan 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
126
1 in 2,720,273
Census rank
#149,446
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
110
very rare in the US
Popularity narrative
The Census Bureau recorded 110 bearers of the surname Ladrigan in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 149446th position in the national surname ranking.
Among Census respondents with the surname Ladrigan, the largest self-reported group is White at 90.9%. The next largest groups are Two or More Races (6.4%) and Hispanic (2.7%).
Origin
Meaning and origin of Ladrigan
The surname LADRIGAN is believed to have originated in the northern Spanish region of Cantabria during the medieval period. It is thought to be derived from the Old Spanish word "ladrigar," which means "to lay bricks" or "to build with bricks." This suggests that the name may have been initially adopted by someone who worked as a bricklayer or stonemason.
One of the earliest recorded instances of the LADRIGAN surname can be found in the Becerro de las Behetrías, a medieval census-like document from the 14th century that recorded landowners and their properties in the regions of Castile and León. In this document, there is a mention of a landowner named Pedro Ladrigan who held property in the village of Reinosa, located in the modern-day autonomous community of Cantabria.
During the 16th century, the LADRIGAN name appeared in several historical records and documents from the Spanish region of Asturias. One notable individual from this time period was Juan Ladrigan, a wealthy merchant and landowner who was born in the city of Oviedo in 1532 and died in 1612.
In the 17th century, the LADRIGAN surname began to spread beyond the northern regions of Spain, with some members of the family relocating to other parts of the country and even to the Spanish colonies in the Americas. One such individual was Francisco Ladrigan, who was born in Santander in 1642 and later became a prominent shipbuilder in the port city of Cádiz.
As the LADRIGAN surname continued to disperse throughout the Spanish-speaking world, it also underwent various spelling variations, such as Ladrigán, Ladrigán, and Ladrigán. One notable figure with this variant spelling was Manuel Ladrigán, a Spanish military officer who fought in the Mexican War of Independence and was born in Madrid in 1792 and died in 1853.
Another notable individual with the LADRIGAN surname was Tomás Ladrigan, a Chilean politician and lawyer who served as a member of the Chilean Congress in the late 19th century. He was born in Santiago in 1845 and died in 1910.
Throughout its history, the LADRIGAN surname has maintained a strong presence in various regions of Spain, as well as in countries with significant Spanish influence and immigration, such as Chile and Mexico. While not a particularly common surname, it has left a mark on the historical records of these areas, reflecting the rich cultural heritage and diverse origins of Hispanic surnames.
Demographics
Ancestry and ethnicity for Ladrigan
Among Census respondents with the surname Ladrigan, the largest self-reported group is White at 90.9%. The next largest groups are Two or More Races (6.4%) and Hispanic (2.7%).
The bar chart below shows how Ladrigan 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 Ladrigan surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.9% · 100
- Two or more races6.4% · 7
- Hispanic or Latino2.7% · 3
Timeline
Historical Census data for Ladrigan
Ladrigan 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
#149,446
National surname rank
Recorded bearers 110
-3 bearers (-2.7%)
Per 100,000 0.04
Rank movement Down 3,245 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #146,201 | 113 | 0.04 | First available Census row | First available Census row |
| 2020 | #149,446 | 110 | 0.04 | -3 bearers (-2.7%) | Down 3,245 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 Ladrigan 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 | #146,201 | #149,446 | -2.2% |
| Count | 113 | 110 | -2.7% |
| Per 100K | 0.04 | 0.04 | -8.0% |
Between the 2010 and 2020 Census, the number of Ladrigan bearers went from 113 to 110 (-2.7% change). The surname moved down 3,245 positions in the national ranking, going from #146,201 to #149,446.
FAQ
Ladrigan surname: questions and answers
How many people in the U.S. have the surname Ladrigan?
Name Census estimates that about 126 living Americans carry the surname Ladrigan. Using the current population baseline, that works out to roughly 1 in 2,720,273 residents.
How common is Ladrigan?
Ladrigan ranks #149,446 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 110 people with the surname Ladrigan. That is different from the site's living-bearer estimate (126), 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 Ladrigan.
Has Ladrigan become more or less common over time?
Between 2010 and 2020, the surname Ladrigan went from 113 recorded bearers to 110. That is a decrease of 3 (-2.7%). In the national ranking it fell from #146,201 to #149,446.
What does the Census say about the background of Ladrigan?
Among Census respondents with the surname Ladrigan, the largest self-reported group is White at 90.9%. The next largest groups are Two or More Races (6.4%) and Hispanic (2.7%). 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 Ladrigan in the 2020 Census, accounting for 90.9% (100 people in the source table).
What is the full ancestry breakdown?
Ladrigan appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.9%), Two or More Races (6.4%), Hispanic (2.7%). 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 Ladrigan (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 Ladrigan mean?
Of Irish origin, possibly derived from the place name Ledrin, referring to someone from that locale. 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 Ladrigan (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 surname Ladrigan?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.