2010
#154,907
National surname rank
Recorded bearers 105
First available Census row
Per 100,000 0.04
Very Rare Last name
Keopaseuth
A surname of Lao origin meaning "gold" or "wealthy person".
According to the 2020 US Census Bureau surname tables, roughly 116 Americans carry the last name Keopaseuth. That puts it at #155,270 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,954,779 residents).
This page is the full Name Census profile for the Keopaseuth 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
116
1 in 2,954,779
Census rank
#155,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
101
very rare in the US
Popularity narrative
The Census Bureau recorded 101 bearers of the surname Keopaseuth in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155270th position in the national surname ranking.
Among Census respondents with the surname Keopaseuth, the largest self-reported group is Asian/Pacific Islander at 95.0%. The next largest groups are Hispanic (2.0%) and Black (1.0%).
Origin
Meaning and origin of Keopaseuth
The surname Keopaseuth originated in Laos, a Southeast Asian country bordered by Myanmar, Cambodia, Vietnam, Thailand, and China. It is believed to have emerged during the 16th century, when the Lane Xang kingdom ruled over modern-day Laos and parts of northeastern Thailand.
The name Keopaseuth is derived from two Lao words: "keo," which means "crystal" or "glass," and "paseuth," which translates to "pure" or "clear." This combination suggests that the name may have been initially associated with skilled glassmakers or artisans who crafted high-quality glass products.
One of the earliest recorded mentions of the surname Keopaseuth can be found in a 17th-century manuscript from the Vientiane region of Laos. This document, written in the traditional Lao script, refers to a family of glassmakers who supplied their wares to the royal court of the Lane Xang kingdom.
During the 18th century, the Keopaseuth name gained prominence in the region of Champasak, located in southern Laos. Historical records from this period mention a notable figure named Keopaseuth Sounalath (1725-1798), who served as a high-ranking government official and advisor to the local ruler.
As Laos underwent various political and territorial changes throughout its history, the Keopaseuth surname spread to other parts of the country and across borders. In the late 19th century, a Lao-Thai family bearing the name Keopaseuth settled in the northeastern region of Thailand, near the city of Nakhon Phanom.
One of the most influential individuals with the Keopaseuth surname was Keopaseuth Souvannalath (1901-1975), a renowned Lao politician and diplomat. He served as the Prime Minister of Laos from 1960 to 1962 and played a crucial role in negotiating the Geneva Accords, which aimed to restore peace and neutrality in Laos during the Cold War era.
Other notable figures with the Keopaseuth surname include Keopaseuth Phimmasone (1920-2005), a respected Lao writer and educator who contributed to the preservation of Lao literature and culture, and Keopaseuth Sitthivong (1935-2011), a celebrated artist known for his intricate silk paintings depicting traditional Lao life and Buddhist themes.
Demographics
Ancestry and ethnicity for Keopaseuth
Among Census respondents with the surname Keopaseuth, the largest self-reported group is Asian/Pacific Islander at 95.0%. The next largest groups are Hispanic (2.0%) and Black (1.0%).
The bar chart below shows how Keopaseuth 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 Keopaseuth surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander95.0% · 96
- Hispanic or Latino2.0% · 2
- Black or African American1.0% · 1
- American Indian and Alaska Native1.0% · 1
- Two or more races1.0% · 1
Timeline
Historical Census data for Keopaseuth
Keopaseuth 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
#155,270
National surname rank
Recorded bearers 101
-4 bearers (-3.8%)
Per 100,000 0.03
Rank movement Down 363 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #154,907 | 105 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,270 | 101 | 0.03 | -4 bearers (-3.8%) | Down 363 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 Keopaseuth 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 | #154,907 | #155,270 | -0.2% |
| Count | 105 | 101 | -3.8% |
| Per 100K | 0.04 | 0.03 | -15.5% |
Between the 2010 and 2020 Census, the number of Keopaseuth bearers went from 105 to 101 (-3.8% change). The surname moved down 363 positions in the national ranking, going from #154,907 to #155,270.
FAQ
Keopaseuth surname: questions and answers
How many people in the U.S. have the surname Keopaseuth?
Name Census estimates that about 116 living Americans carry the surname Keopaseuth. Using the current population baseline, that works out to roughly 1 in 2,954,779 residents.
How common is Keopaseuth?
Keopaseuth ranks #155,270 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 101 people with the surname Keopaseuth. That is different from the site's living-bearer estimate (116), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Keopaseuth.
Has Keopaseuth become more or less common over time?
Between 2010 and 2020, the surname Keopaseuth went from 105 recorded bearers to 101. That is a decrease of 4 (-3.8%). In the national ranking it fell from #154,907 to #155,270.
What does the Census say about the background of Keopaseuth?
Among Census respondents with the surname Keopaseuth, the largest self-reported group is Asian/Pacific Islander at 95.0%. The next largest groups are Hispanic (2.0%) and Black (1.0%). 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?
Asian/Pacific Islander is the largest self-reported group for the surname Keopaseuth in the 2020 Census, accounting for 95.0% (96 people in the source table).
What is the full ancestry breakdown?
Keopaseuth appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (95.0%), Hispanic (2.0%), Black (1.0%). 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 Keopaseuth (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 Keopaseuth mean?
A surname of Lao origin meaning "gold" or "wealthy person". 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 Keopaseuth (0.03 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 Keopaseuth?
Find out how many Americans have the surname Keopaseuth on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.