2000
#15,207
National surname rank
Recorded bearers 1,777
First available Census row
Per 100,000 0.66
Rare Last name
Rayo
A Spanish toponymic surname indicating someone from a place with lightning, or a nickname for a fast runner.
According to the 2020 US Census Bureau surname tables, roughly 2,842 Americans carry the last name Rayo. That puts it at #12,024 in the national surname ranking, appearing at a frequency of 0.83 per 100,000 people (about 1 in 120,603 residents).
This page is the full Name Census profile for the Rayo 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
2.8K
1 in 120,603
Census rank
#12,024
2020 decennial data
Per 100,000
0.8
Frequency rate
Recorded bearers
2.5K
rare in the US
Popularity narrative
The Census Bureau recorded 2,478 bearers of the surname Rayo in its 2020 decennial surname file. At a rate of 0.83 per 100,000 residents, it holds the 12024th position in the national surname ranking.
Among Census respondents with the surname Rayo, the largest self-reported group is Hispanic at 88.4%. The next largest groups are White (5.4%) and Asian/Pacific Islander (4.8%).
Origin
Meaning and origin of Rayo
The surname RAYO is of Spanish origin, derived from the word "rayo" meaning "ray" or "beam of light." It is believed to have originated as a descriptive surname in the late medieval period, likely referring to a person with a bright or radiant appearance or personality.
The earliest recorded instances of the name RAYO can be traced back to the 15th century in various regions of Spain, particularly in Andalusia and Castile. Some of the earliest known bearers of the surname include Juan Rayo, a landowner in Seville documented in 1492, and Pedro Rayo, a soldier who fought in the Conquest of Granada in 1492.
In the 16th century, the name RAYO appeared in several historical records and manuscripts, including the Catastro de Ensenada, a census-like survey conducted in Spain between 1749 and 1756. This document provides valuable insights into the distribution and prevalence of the surname during that era.
One notable bearer of the RAYO surname was Diego Rayo, a Spanish explorer and navigator who accompanied Hernán Cortés on his expedition to Mexico in the early 16th century. He played a crucial role in the conquest of the Aztec Empire and is mentioned in several accounts of the time.
Another prominent figure with the RAYO surname was Francisco Rayo, a 17th-century Spanish painter known for his religious works. Some of his paintings can still be found in churches and museums across Spain, showcasing his artistic talent and contribution to the Spanish Golden Age of art.
In the 18th century, the RAYO surname was associated with several influential families in Spain, including the Rayo de Soto family from Andalusia. This family produced several notable members, such as Manuel Rayo de Soto (1720-1798), a respected lawyer and author of legal treatises.
As the centuries passed, the RAYO surname spread beyond Spain to other parts of the Spanish-speaking world, including Latin America and the Philippines, due to Spanish colonization and migration patterns.
In terms of place names, the surname RAYO is also found in several locations across Spain, such as Rayo de Luz (literally "Beam of Light"), a small village in the province of Málaga, and Rayo Villano, a municipality in the province of Jaén. These place names may have influenced the surname or vice versa, reflecting the close relationship between surnames and geographic origins.
Demographics
Ancestry and ethnicity for Rayo
Among Census respondents with the surname Rayo, the largest self-reported group is Hispanic at 88.4%. The next largest groups are White (5.4%) and Asian/Pacific Islander (4.8%).
The bar chart below shows how Rayo 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 Rayo surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino88.4% · 2,190
- White5.4% · 134
- Asian and Pacific Islander4.8% · 119
- Black or African American0.6% · 15
- Two or more races0.6% · 15
- American Indian and Alaska Native0.2% · 5
Timeline
Historical Census data for Rayo
Rayo 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
#12,242
National surname rank
Recorded bearers 2,541
+764 bearers (+43.0%)
Per 100,000 0.86
Rank movement Up 2,965 places
2020
#12,024
National surname rank
Recorded bearers 2,478
-63 bearers (-2.5%)
Per 100,000 0.83
Rank movement Up 218 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #15,207 | 1,777 | 0.66 | First available Census row | First available Census row |
| 2010 | #12,242 | 2,541 | 0.86 | +764 bearers (+43.0%) | Up 2,965 places |
| 2020 | #12,024 | 2,478 | 0.83 | -63 bearers (-2.5%) | Up 218 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 Rayo 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 | #12,242 | #12,024 | 1.8% |
| Count | 2,541 | 2,478 | -2.5% |
| Per 100K | 0.86 | 0.83 | -3.6% |
Between the 2010 and 2020 Census, the number of Rayo bearers went from 2,541 to 2,478 (-2.5% change). The surname moved up 218 positions in the national ranking, going from #12,242 to #12,024.
FAQ
Rayo surname: questions and answers
How many people in the U.S. have the surname Rayo?
Name Census estimates that about 2,842 living Americans carry the surname Rayo. Using the current population baseline, that works out to roughly 1 in 120,603 residents.
How common is Rayo?
Rayo ranks #12,024 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.83 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 2,478 people with the surname Rayo. That is different from the site's living-bearer estimate (2,842), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.83 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.83 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 Rayo.
Has Rayo become more or less common over time?
Between 2010 and 2020, the surname Rayo went from 2,541 recorded bearers to 2,478. That is a decrease of 63 (-2.5%). In the national ranking it rose from #12,242 to #12,024.
What does the Census say about the background of Rayo?
Among Census respondents with the surname Rayo, the largest self-reported group is Hispanic at 88.4%. The next largest groups are White (5.4%) and Asian/Pacific Islander (4.8%). 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 Rayo in the 2020 Census, accounting for 88.4% (2,190 people in the source table).
What is the full ancestry breakdown?
Rayo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (88.4%), White (5.4%), Asian/Pacific Islander (4.8%). 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 Rayo (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 Rayo mean?
A Spanish toponymic surname indicating someone from a place with lightning, or a nickname for a fast runner. 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 Rayo (0.83 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 Rayo?
Our sister site HowManyOfMe.org answers how many people have the surname Rayo at a glance, with the living-bearer count up front.