2010
#145,220
National surname rank
Recorded bearers 114
First available Census row
Per 100,000 0.04
Very Rare Last name
Terasaki
A Japanese surname indicating a person from the village of Tera.
According to the 2020 US Census Bureau surname tables, roughly 122 Americans carry the last name Terasaki. That puts it at #152,339 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,809,462 residents).
This page is the full Name Census profile for the Terasaki 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
122
1 in 2,809,462
Census rank
#152,339
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
106
very rare in the US
Popularity narrative
The Census Bureau recorded 106 bearers of the surname Terasaki in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152339th position in the national surname ranking.
Among Census respondents with the surname Terasaki, the largest self-reported group is Asian/Pacific Islander at 80.2%. The next largest groups are Two or More Races (9.4%) and White (5.7%).
Origin
Meaning and origin of Terasaki
The surname Terasaki originates from Japan and dates back to the late 16th century. It is believed to have derived from the Japanese words "tera" meaning temple and "saki" meaning cape or promontory, suggesting an association with a temple located on a prominent landform.
The earliest known records of the Terasaki name appear in the Kamakura region of Japan during the late Muromachi period (1336-1573). In these records, the name is often spelled with slight variations, such as Terasaki, Terazaki, and Terasaki.
One of the earliest documented individuals with the Terasaki surname was Terasaki Hidenaga, a samurai warrior who served under the Hojo clan in the early 17th century. Another notable figure was Terasaki Masanari, a renowned calligrapher and artist who lived during the Edo period (1603-1868).
In the 18th century, the Terasaki family established a prominent presence in the town of Odawara, located in the Kanagawa Prefecture. Terasaki Shigeyoshi (1701-1784) was a respected scholar and educator who founded a private school in Odawara that attracted students from across the region.
During the Meiji era (1868-1912), Terasaki Munenori (1832-1901) was a prominent political figure who served as a member of the House of Peers, the upper house of the Imperial Diet. He played a significant role in the modernization of Japan and the establishment of the Meiji Constitution.
Another notable individual was Terasaki Tomokichi (1861-1926), a successful businessman and philanthropist who made significant contributions to the development of the city of Nagoya. He founded the Terasaki Gakuen, an educational institution that continues to operate to this day.
It is important to note that while the Terasaki surname has a rich history in Japan, it has also spread to other parts of the world through emigration and cultural exchange. However, the focus of this report is solely on the historical origins and significance of the surname within the Japanese context.
Demographics
Ancestry and ethnicity for Terasaki
Among Census respondents with the surname Terasaki, the largest self-reported group is Asian/Pacific Islander at 80.2%. The next largest groups are Two or More Races (9.4%) and White (5.7%).
The bar chart below shows how Terasaki 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 Terasaki surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander80.2% · 85
- Two or more races9.4% · 10
- White5.7% · 6
- Hispanic or Latino3.8% · 4
- Black or African American0.9% · 1
Timeline
Historical Census data for Terasaki
Terasaki 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
#152,339
National surname rank
Recorded bearers 106
-8 bearers (-7.0%)
Per 100,000 0.04
Rank movement Down 7,119 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #145,220 | 114 | 0.04 | First available Census row | First available Census row |
| 2020 | #152,339 | 106 | 0.04 | -8 bearers (-7.0%) | Down 7,119 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 Terasaki 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 | #145,220 | #152,339 | -4.9% |
| Count | 114 | 106 | -7.0% |
| Per 100K | 0.04 | 0.04 | -11.3% |
Between the 2010 and 2020 Census, the number of Terasaki bearers went from 114 to 106 (-7.0% change). The surname moved down 7,119 positions in the national ranking, going from #145,220 to #152,339.
FAQ
Terasaki surname: questions and answers
How many people in the U.S. have the surname Terasaki?
Name Census estimates that about 122 living Americans carry the surname Terasaki. Using the current population baseline, that works out to roughly 1 in 2,809,462 residents.
How common is Terasaki?
Terasaki ranks #152,339 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 106 people with the surname Terasaki. That is different from the site's living-bearer estimate (122), 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 Terasaki.
Has Terasaki become more or less common over time?
Between 2010 and 2020, the surname Terasaki went from 114 recorded bearers to 106. That is a decrease of 8 (-7.0%). In the national ranking it fell from #145,220 to #152,339.
What does the Census say about the background of Terasaki?
Among Census respondents with the surname Terasaki, the largest self-reported group is Asian/Pacific Islander at 80.2%. The next largest groups are Two or More Races (9.4%) and White (5.7%). 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?
Asian/Pacific Islander is the largest self-reported group for the surname Terasaki in the 2020 Census, accounting for 80.2% (85 people in the source table).
What is the full ancestry breakdown?
Terasaki appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (80.2%), Two or More Races (9.4%), White (5.7%). 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 Terasaki (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 Terasaki mean?
A Japanese surname indicating a person from the village of Tera. 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 Terasaki (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 Terasaki?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.