Thach
A diminutive Vietnamese name derived from the word "thạch" meaning jade or gemstone.
Name Census estimates that about 11 living Americans carry the first name Thach. The name is used almost exclusively for boys. The average person named Thach today is around 39 years old, and the year with the single highest number of Thach births was 1982 (6 babies).
This page is the full Name Census profile for Thach. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • Fewer than 100 living Americans are believed to carry the name Thach. It is among the rarest names in the SSA records.
People living today
11
~ 1 in 31,159,485 Americans
Peak year
1982
6 babies that year
Average age
39
years old
1988 SSA rank
#8,387
Tracked since 1982
Census
Thach in the 2020 Census
The 2020 Census recorded 1,040 people with the first name Thach, which placed it at #12,092 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#12,092
National first-name rank
People counted
1.0K
1,040 in the published race/origin table
Per 100,000
0.3
People with this name in 2020
Largest reported group
Asian and Pacific Islander
97.7% of people with this name
Demographics
Ancestry and ethnicity for Thach
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Thach is Asian/Pacific Islander at 97.7%. The next largest groups are White (0.7%) and Two or More Races (0.6%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Thach 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 name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Thach at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander97.7% · 1,016
- White0.7% · 7
- Two or more races0.6% · 6
- Black or African American0.5% · 5
- Hispanic or Latino0.5% · 5
- American Indian and Alaska Native0.1% · 1
Popularity
Thach: popularity over time
Babies born per year
Decades
Thach by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Thach during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
| Decade | Male | Female | Total |
|---|---|---|---|
| 1980s | 11 | 0 | 11 |
Origin
Meaning and history of Thach
The name Thach originates from the Vietnamese language and has its roots in the ancient cultures of Southeast Asia. It is believed to have been derived from the Vietnamese word "thạch," which means "stone" or "rock," symbolizing strength, durability, and resilience.
One of the earliest recorded instances of the name Thach can be traced back to the 13th century, during the reign of the Tran Dynasty in Vietnam. Historical records mention a prominent figure named Tran Thach, who was a military commander and advisor to the emperor Tran Nhan Tong. Tran Thach played a crucial role in defending Vietnam against the Mongol invasions, earning him a place in the annals of Vietnamese history.
In the realm of literature, the name Thach is mentioned in several Vietnamese folk tales and legends. One such tale depicts a legendary warrior named Thach Sanh, who was known for his bravery and martial arts skills. These stories have been passed down through generations, preserving the cultural significance of the name.
Throughout history, several notable individuals have borne the name Thach. One example is Thach Lam (1549-1625), a renowned Vietnamese philosopher and scholar during the Le Dynasty. His works on Confucianism and ethics had a profound influence on Vietnamese society and education.
Another prominent figure was Thach Cau (1710-1780), a Vietnamese poet and calligrapher who lived during the later Le Dynasty. His poetry is celebrated for its elegant style and profound insights into the human condition.
In more recent times, Thach Ba Lam (1900-1968) was a revered Vietnamese Buddhist monk known for his teachings on mindfulness and compassion. He played a significant role in the revival of Buddhism in Vietnam during the 20th century.
Thach Chung Tan (1921-2006) was a renowned Vietnamese artist and sculptor, whose works captured the essence of traditional Vietnamese culture and depicted scenes from daily life. His sculptures can be found in various museums and public spaces throughout Vietnam.
It is important to note that while the name Thach has its roots in Vietnamese culture, it has also been adopted and used in other Southeast Asian countries, such as Cambodia and Laos, due to cultural and linguistic influences in the region.
People
Thach + last name combinations
How many people share a full name with Thach as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with T
Other first names starting with T with a similar number of bearers.
FAQ
Thach: questions and answers
How many people in the U.S. are named Thach?
Name Census puts the figure at roughly 11 living Americans. We arrive at this by taking every SSA birth registration for Thach going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 31,159,485 US residents.
Is Thach a common name?
We classify Thach as "Very Rare". It ranks above 30.8% of all first names in the SSA dataset by living bearers. Across the full history of the data, 11 babies have been registered with this name.
When was Thach most popular?
The single biggest year for Thach was 1982, when 6 babies received the name. The fact that the average living Thach is about 39 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Thach in the 2020 Census?
The published 2020 Census first-name tables recorded 1,040 people with the name Thach, or 0.34 per 100,000 residents. That placed it at #12,092 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Thach in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Thach?
In the 2020 Census sex table, Thach leans strongly male. 897 people counted with this name were male (85.8%), compared with 148 female bearers (14.2%). The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Thach?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Thach is Asian/Pacific Islander at 97.7%. The next largest groups are White (0.7%) and Two or More Races (0.6%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Thach most often in the Census?
Asian/Pacific Islander is the largest reported group for people named Thach in the 2020 Census, accounting for 97.7% (1,016 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Thach in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Thach a male name?
Yes, 100.0% of people registered as Thach in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Thach still being used today?
Yes. The SSA still recorded Thach in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Thach can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How common is the name Thach?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.