2000
#5,115
National surname rank
Recorded bearers 6,295
First available Census row
Per 100,000 2.33
Rare Last name
Watanabe
A Japanese surname meaning "ferryside" or "edge of the ferry," referring to people who lived near ferry crossings.
According to the 2020 US Census Bureau surname tables, roughly 6,822 Americans carry the last name Watanabe. That puts it at #5,628 in the national surname ranking, appearing at a frequency of 1.99 per 100,000 people (about 1 in 50,243 residents).
This page is the full Name Census profile for the Watanabe 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.
For British records, Name Census UK has a British surname profile for Watanabe with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
6.8K
1 in 50,243
Census rank
#5,628
2020 decennial data
Per 100,000
2.0
Frequency rate
Recorded bearers
5.9K
rare in the US
Popularity narrative
The Census Bureau recorded 5,949 bearers of the surname Watanabe in its 2020 decennial surname file. At a rate of 1.99 per 100,000 residents, it holds the 5628th position in the national surname ranking.
Among Census respondents with the surname Watanabe, the largest self-reported group is Asian/Pacific Islander at 76.8%. The next largest groups are Two or More Races (12.1%) and White (7.0%).
Origin
Meaning and origin of Watanabe
The surname Watanabe is of Japanese origin, with its roots traced back to the 8th century AD during the Nara period. It is derived from the Japanese words "wa" meaning "ring" or "circle," and "tanabe" meaning "field" or "valley." Therefore, Watanabe loosely translates to "circular field" or "valley surrounded by a ring of hills."
The earliest known record of the Watanabe name can be found in the Shoku Nihongi, an early Japanese chronicle compiled in the late 8th century. This historical text mentions individuals with the surname Watanabe serving as officials and courtiers during the reign of Emperor Kammu (737-806 AD).
During the Kamakura period (1185-1333 AD), the Watanabe family rose to prominence as samurai warriors and retainers to the powerful Minamoto clan. One notable figure from this era was Watanabe no Tsuna (1324-1369), a skilled swordsman and military strategist who served under the shogun Ashikaga Takauji.
In the Edo period (1603-1868 AD), the Watanabe clan held significant influence as daimyo (feudal lords) in various regions of Japan. Watanabe Kazan (1793-1841), a renowned scholar, artist, and writer, was born into this lineage and is remembered for his contributions to the study of Western science and philosophy.
Another prominent individual with the Watanabe surname was Watanabe Kakunen (1859-1941), a influential Zen Buddhist monk and calligrapher who served as the head abbot of several notable temples, including Daitoku-ji in Kyoto.
During the Meiji era (1868-1912), Watanabe Toshio (1885-1962) emerged as a pioneering botanist and phycologist, making significant contributions to the field of algae research and taxonomy.
Throughout its long history, the Watanabe name has been associated with various place names and regional variations in spelling, such as Watanabi, Watanave, and Watanave. However, the standardized form of Watanabe remains the most widely recognized and used variation.
Demographics
Ancestry and ethnicity for Watanabe
Among Census respondents with the surname Watanabe, the largest self-reported group is Asian/Pacific Islander at 76.8%. The next largest groups are Two or More Races (12.1%) and White (7.0%).
The bar chart below shows how Watanabe 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 Watanabe surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander76.8% · 4,566
- Two or more races12.1% · 718
- White7.0% · 414
- Hispanic or Latino3.8% · 227
- Black or African American0.3% · 19
- American Indian and Alaska Native0.1% · 5
Timeline
Historical Census data for Watanabe
Watanabe 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
#5,605
National surname rank
Recorded bearers 6,204
-91 bearers (-1.4%)
Per 100,000 2.10
Rank movement Down 490 places
2020
#5,628
National surname rank
Recorded bearers 5,949
-255 bearers (-4.1%)
Per 100,000 1.99
Rank movement Down 23 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #5,115 | 6,295 | 2.33 | First available Census row | First available Census row |
| 2010 | #5,605 | 6,204 | 2.10 | -91 bearers (-1.4%) | Down 490 places |
| 2020 | #5,628 | 5,949 | 1.99 | -255 bearers (-4.1%) | Down 23 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 Watanabe 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 | #5,605 | #5,628 | -0.4% |
| Count | 6,204 | 5,949 | -4.1% |
| Per 100K | 2.10 | 1.99 | -5.2% |
Between the 2010 and 2020 Census, the number of Watanabe bearers went from 6,204 to 5,949 (-4.1% change). The surname moved down 23 positions in the national ranking, going from #5,605 to #5,628.
FAQ
Watanabe surname: questions and answers
How many people in the U.S. have the surname Watanabe?
Name Census estimates that about 6,822 living Americans carry the surname Watanabe. Using the current population baseline, that works out to roughly 1 in 50,243 residents.
How common is Watanabe?
Watanabe ranks #5,628 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.99 per 100,000 residents, which is about 2 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 5,949 people with the surname Watanabe. That is different from the site's living-bearer estimate (6,822), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.99 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.99 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 2 of them to have the surname Watanabe.
Has Watanabe become more or less common over time?
Between 2010 and 2020, the surname Watanabe went from 6,204 recorded bearers to 5,949. That is a decrease of 255 (-4.1%). In the national ranking it fell from #5,605 to #5,628.
What does the Census say about the background of Watanabe?
Among Census respondents with the surname Watanabe, the largest self-reported group is Asian/Pacific Islander at 76.8%. The next largest groups are Two or More Races (12.1%) and White (7.0%). 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 Watanabe in the 2020 Census, accounting for 76.8% (4,566 people in the source table).
What is the full ancestry breakdown?
Watanabe appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (76.8%), Two or More Races (12.1%), White (7.0%). 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 Watanabe (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 Watanabe mean?
A Japanese surname meaning "ferryside" or "edge of the ferry," referring to people who lived near ferry crossings. 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 Watanabe (1.99 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 Watanabe?
You can see how many people have the last name Watanabe on our sister site HowManyOfMe.org — same data roots, lighter UI.