2000
#19,079
National surname rank
Recorded bearers 1,319
First available Census row
Per 100,000 0.49
Rare Last name
Osornio
A Spanish surname derived from the place name Osorno, likely referring to someone from that town or region.
According to the 2020 US Census Bureau surname tables, roughly 2,414 Americans carry the last name Osornio. That puts it at #13,760 in the national surname ranking, appearing at a frequency of 0.70 per 100,000 people (about 1 in 141,986 residents).
This page is the full Name Census profile for the Osornio 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
2.4K
1 in 141,986
Census rank
#13,760
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.1K
rare in the US
Popularity narrative
The Census Bureau recorded 2,105 bearers of the surname Osornio in its 2020 decennial surname file. At a rate of 0.70 per 100,000 residents, it holds the 13760th position in the national surname ranking.
Among Census respondents with the surname Osornio, the largest self-reported group is Hispanic at 94.6%. The next largest groups are White (4.8%) and Two or More Races (0.3%).
Origin
Meaning and origin of Osornio
The surname Osornio is of Spanish origin, tracing its roots back to the 15th century in the Basque region of northern Spain. It is believed to be derived from the Basque word 'osortu,' meaning 'to heal' or 'to cure.' This suggests that the name may have originally been associated with individuals who practiced healing or herbal medicine.
The earliest recorded instances of the name Osornio can be found in historical documents from the late 15th century in the Basque provinces of Álava and Vizcaya. One notable mention is in the records of the Basque town of Oñati from 1487, where a landowner named Juan de Osornio is listed among the local gentry.
During the 16th and 17th centuries, as the Spanish Empire expanded across the Americas, the Osornio surname began to appear in colonial records from various regions of the New World. This included individuals such as Diego de Osornio, who was a Spanish soldier and explorer born in 1520, and participated in the conquest of Peru alongside Francisco Pizarro.
In the 18th century, the Osornio name gained prominence in the region of Nuevo León, Mexico, where a settlement known as Hacienda Osornio was established near the town of Monterrey. This hacienda was owned by the Osornio family and played a significant role in the local economy and social fabric.
One of the most notable figures bearing the Osornio surname was José María Osornio, a Mexican military officer and politician who lived from 1794 to 1869. He played a crucial role in the Mexican War of Independence and later served as the governor of Zacatecas state.
Another prominent individual was Mariano Osornio, a Mexican writer and journalist born in 1846 in San Luis Potosí. He was a prolific author and advocate for social reforms, particularly in the field of education.
In the 20th century, the Osornio surname continued to be present in various parts of Mexico and the United States, with individuals such as Rafael Osornio, a Mexican artist and muralist born in 1910, and Juan Osornio, a Mexican-American musician and composer born in 1937.
Overall, the surname Osornio has a rich history spanning several centuries and continents, with its origins rooted in the Basque region of Spain and a potential connection to the practice of healing and medicine.
Demographics
Ancestry and ethnicity for Osornio
Among Census respondents with the surname Osornio, the largest self-reported group is Hispanic at 94.6%. The next largest groups are White (4.8%) and Two or More Races (0.3%).
The bar chart below shows how Osornio 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 Osornio surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino94.6% · 1,991
- White4.8% · 101
- Two or more races0.3% · 7
- Asian and Pacific Islander0.1% · 3
- Black or African American0.1% · 2
- American Indian and Alaska Native0.0% · 1
Timeline
Historical Census data for Osornio
Osornio 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
#13,922
National surname rank
Recorded bearers 2,169
+850 bearers (+64.4%)
Per 100,000 0.74
Rank movement Up 5,157 places
2020
#13,760
National surname rank
Recorded bearers 2,105
-64 bearers (-3.0%)
Per 100,000 0.70
Rank movement Up 162 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #19,079 | 1,319 | 0.49 | First available Census row | First available Census row |
| 2010 | #13,922 | 2,169 | 0.74 | +850 bearers (+64.4%) | Up 5,157 places |
| 2020 | #13,760 | 2,105 | 0.70 | -64 bearers (-3.0%) | Up 162 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 Osornio 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 | #13,922 | #13,760 | 1.2% |
| Count | 2,169 | 2,105 | -3.0% |
| Per 100K | 0.74 | 0.70 | -4.8% |
Between the 2010 and 2020 Census, the number of Osornio bearers went from 2,169 to 2,105 (-3.0% change). The surname moved up 162 positions in the national ranking, going from #13,922 to #13,760.
FAQ
Osornio surname: questions and answers
How many people in the U.S. have the surname Osornio?
Name Census estimates that about 2,414 living Americans carry the surname Osornio. Using the current population baseline, that works out to roughly 1 in 141,986 residents.
How common is Osornio?
Osornio ranks #13,760 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.70 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,105 people with the surname Osornio. That is different from the site's living-bearer estimate (2,414), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.7 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.70 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Osornio.
Has Osornio become more or less common over time?
Between 2010 and 2020, the surname Osornio went from 2,169 recorded bearers to 2,105. That is a decrease of 64 (-3.0%). In the national ranking it rose from #13,922 to #13,760.
What does the Census say about the background of Osornio?
Among Census respondents with the surname Osornio, the largest self-reported group is Hispanic at 94.6%. The next largest groups are White (4.8%) and Two or More Races (0.3%). 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?
Hispanic is the largest self-reported group for the surname Osornio in the 2020 Census, accounting for 94.6% (1,991 people in the source table).
What is the full ancestry breakdown?
Osornio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (94.6%), White (4.8%), Two or More Races (0.3%). 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 Osornio (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 Osornio mean?
A Spanish surname derived from the place name Osorno, likely referring to someone from that town or region. 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 Osornio (0.70 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 Osornio?
If you just want to know how many people have the surname Osornio, HowManyOfMe.org gives you the headline number in one glance.