2000
#99,214
National surname rank
Recorded bearers 169
First available Census row
Per 100,000 0.06
Very Rare Last name
Uchimura
A Japansese surname meaning "one's inner village".
According to the 2020 US Census Bureau surname tables, roughly 169 Americans carry the last name Uchimura. That puts it at #123,144 in the national surname ranking, appearing at a frequency of 0.05 per 100,000 people (about 1 in 2,028,132 residents).
This page is the full Name Census profile for the Uchimura 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
169
1 in 2,028,132
Census rank
#123,144
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
147
very rare in the US
Popularity narrative
The Census Bureau recorded 147 bearers of the surname Uchimura in its 2020 decennial surname file. At a rate of 0.05 per 100,000 residents, it holds the 123144th position in the national surname ranking.
Among Census respondents with the surname Uchimura, the largest self-reported group is Asian/Pacific Islander at 71.4%. The next largest groups are Two or More Races (16.3%) and White (7.5%).
Origin
Meaning and origin of Uchimura
The surname UCHIMURA originates from Japan, tracing its roots back to the 8th century. It is believed to have derived from the Japanese words "uchi" meaning "inside" and "mura" meaning "village," suggesting the name may have initially referred to someone residing within a particular village or community.
One of the earliest recorded instances of the UCHIMURA name can be found in the Shoku Nihongi, an imperial chronicle compiled in the late 8th century. This historical text mentions an individual named UCHIMURA no Fukamichi, who held a prominent position within the imperial court during the Nara period (710-794).
During the Kamakura period (1185-1333), the UCHIMURA name appears in various samurai records, indicating that some members of the family may have been part of the warrior class. One notable figure from this era was UCHIMURA Naozane, a skilled swordsman and military strategist who served under the Hojo clan.
In the Edo period (1603-1868), the UCHIMURA family gained prominence in the Shinshu region, where they held influential positions within local administration and governance. A notable figure from this time was UCHIMURA Kanzō, a respected scholar and calligrapher born in 1751.
The UCHIMURA surname has also been associated with several notable individuals throughout modern Japanese history. UCHIMURA Kanzō (1861-1930) was a prominent Christian thinker, writer, and pacifist who played a significant role in the early stages of the non-church movement in Japan. UCHIMURA Naoya (1897-1983) was a celebrated writer and poet, known for his works exploring themes of nature, spirituality, and the human condition.
Another prominent figure was UCHIMURA Kōzō (1904-1985), a renowned mathematician and educator who made significant contributions to the field of algebraic geometry. UCHIMURA Yoshiko (1926-2017) was a highly respected cultural anthropologist and scholar of Japanese folklore and traditions.
While the UCHIMURA surname has its origins deeply rooted in Japanese history, it has also spread globally through migration and cultural exchange. Individuals with this surname can be found in various parts of the world, carrying on the legacy of their family name and its rich heritage.
Demographics
Ancestry and ethnicity for Uchimura
Among Census respondents with the surname Uchimura, the largest self-reported group is Asian/Pacific Islander at 71.4%. The next largest groups are Two or More Races (16.3%) and White (7.5%).
The bar chart below shows how Uchimura 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 Uchimura surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander71.4% · 105
- Two or more races16.3% · 24
- White7.5% · 11
- Hispanic or Latino3.4% · 5
- Black or African American1.4% · 2
Timeline
Historical Census data for Uchimura
Uchimura 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
#111,426
National surname rank
Recorded bearers 158
-11 bearers (-6.5%)
Per 100,000 0.05
Rank movement Down 12,212 places
2020
#123,144
National surname rank
Recorded bearers 147
-11 bearers (-7.0%)
Per 100,000 0.05
Rank movement Down 11,718 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #99,214 | 169 | 0.06 | First available Census row | First available Census row |
| 2010 | #111,426 | 158 | 0.05 | -11 bearers (-6.5%) | Down 12,212 places |
| 2020 | #123,144 | 147 | 0.05 | -11 bearers (-7.0%) | Down 11,718 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 Uchimura 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 | #111,426 | #123,144 | -10.5% |
| Count | 158 | 147 | -7.0% |
| Per 100K | 0.05 | 0.05 | -1.6% |
Between the 2010 and 2020 Census, the number of Uchimura bearers went from 158 to 147 (-7.0% change). The surname moved down 11,718 positions in the national ranking, going from #111,426 to #123,144.
FAQ
Uchimura surname: questions and answers
How many people in the U.S. have the surname Uchimura?
Name Census estimates that about 169 living Americans carry the surname Uchimura. Using the current population baseline, that works out to roughly 1 in 2,028,132 residents.
How common is Uchimura?
Uchimura ranks #123,144 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.05 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 147 people with the surname Uchimura. That is different from the site's living-bearer estimate (169), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.05 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.05 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 Uchimura.
Has Uchimura become more or less common over time?
Between 2010 and 2020, the surname Uchimura went from 158 recorded bearers to 147. That is a decrease of 11 (-7.0%). In the national ranking it fell from #111,426 to #123,144.
What does the Census say about the background of Uchimura?
Among Census respondents with the surname Uchimura, the largest self-reported group is Asian/Pacific Islander at 71.4%. The next largest groups are Two or More Races (16.3%) and White (7.5%). 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 Uchimura in the 2020 Census, accounting for 71.4% (105 people in the source table).
What is the full ancestry breakdown?
Uchimura appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (71.4%), Two or More Races (16.3%), White (7.5%). 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 Uchimura (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 Uchimura mean?
A Japansese surname meaning "one's inner village". 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 Uchimura (0.05 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 Americans have the surname Uchimura?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.