2000
#13,812
National surname rank
Recorded bearers 2,009
First available Census row
Per 100,000 0.74
Rare Last name
Banach
A Polish habitational surname derived from the place name Banachów, likely referring to someone from that locality.
According to the 2020 US Census Bureau surname tables, roughly 2,131 Americans carry the last name Banach. That puts it at #15,213 in the national surname ranking, appearing at a frequency of 0.62 per 100,000 people (about 1 in 160,842 residents).
This page is the full Name Census profile for the Banach 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 Banach with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
2.1K
1 in 160,842
Census rank
#15,213
2020 decennial data
Per 100,000
0.6
Frequency rate
Recorded bearers
1.9K
rare in the US
Popularity narrative
The Census Bureau recorded 1,858 bearers of the surname Banach in its 2020 decennial surname file. At a rate of 0.62 per 100,000 residents, it holds the 15213th position in the national surname ranking.
Among Census respondents with the surname Banach, the largest self-reported group is White at 94.4%. The next largest groups are Hispanic (3.8%) and Two or More Races (1.2%).
Origin
Meaning and origin of Banach
The surname Banach is of Polish origin, with roots dating back to the 16th century. It is believed to have originated from the town of Banach, located in the Podkarpackie region of southeastern Poland. The name is derived from the Polish word "ban," which means "lord" or "ruler," suggesting that the original bearers of this surname may have been associated with a local lord or landowner.
One of the earliest recorded instances of the surname Banach can be found in the archives of the city of Krakow, where a document from 1589 mentions a certain Jan Banach, a merchant from the nearby town of Tarnów. This provides evidence of the surname's existence during the late Renaissance period in Poland.
In the 17th century, the name appears in various parish records and tax registers across different regions of Poland, indicating its gradual spread and adoption by families from diverse backgrounds. A notable example is Tomasz Banach, a landowner and nobleman from the village of Czyżów, born around 1630.
During the 18th century, the Banach surname gained prominence with the rise of Stanisław Banach, a renowned mathematician and founder of modern functional analysis. Born in 1892 in Kraków, Stanisław Banach made significant contributions to mathematics and is widely regarded as one of Poland's most influential mathematicians.
Other notable individuals with the Banach surname include:
1. Józef Banach (1887-1975), a Polish painter and art educator known for his landscape and genre paintings.
2. Henryk Banach (1902-1985), a Polish football player who represented the national team in the 1924 Summer Olympics.
3. Krzysztof Banach (born 1966), a Polish actor and theater director, known for his work in films and TV series.
4. Renata Banach (born 1986), a Polish volleyball player and Olympic medalist who competed in the 2012 and 2016 Summer Olympics.
5. Władysław Banach (1905-1988), a Polish engineer and inventor, best known for his contributions to the development of the PN-23 anti-aircraft gun during World War II.
While the Banach surname has its roots in Poland, it has also spread to other parts of the world through migration and diaspora communities. However, the historical records and notable figures mentioned above provide a glimpse into the rich heritage and significance of this surname within Polish culture and history.
Demographics
Ancestry and ethnicity for Banach
Among Census respondents with the surname Banach, the largest self-reported group is White at 94.4%. The next largest groups are Hispanic (3.8%) and Two or More Races (1.2%).
The bar chart below shows how Banach 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 Banach surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.4% · 1,754
- Hispanic or Latino3.8% · 71
- Two or more races1.2% · 23
- Black or African American0.2% · 4
- Asian and Pacific Islander0.2% · 4
- American Indian and Alaska Native0.1% · 2
Timeline
Historical Census data for Banach
Banach 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
#14,427
National surname rank
Recorded bearers 2,071
+62 bearers (+3.1%)
Per 100,000 0.70
Rank movement Down 615 places
2020
#15,213
National surname rank
Recorded bearers 1,858
-213 bearers (-10.3%)
Per 100,000 0.62
Rank movement Down 786 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #13,812 | 2,009 | 0.74 | First available Census row | First available Census row |
| 2010 | #14,427 | 2,071 | 0.70 | +62 bearers (+3.1%) | Down 615 places |
| 2020 | #15,213 | 1,858 | 0.62 | -213 bearers (-10.3%) | Down 786 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 Banach 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 | #14,427 | #15,213 | -5.4% |
| Count | 2,071 | 1,858 | -10.3% |
| Per 100K | 0.70 | 0.62 | -11.2% |
Between the 2010 and 2020 Census, the number of Banach bearers went from 2,071 to 1,858 (-10.3% change). The surname moved down 786 positions in the national ranking, going from #14,427 to #15,213.
FAQ
Banach surname: questions and answers
How many people in the U.S. have the surname Banach?
Name Census estimates that about 2,131 living Americans carry the surname Banach. Using the current population baseline, that works out to roughly 1 in 160,842 residents.
How common is Banach?
Banach ranks #15,213 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.62 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 1,858 people with the surname Banach. That is different from the site's living-bearer estimate (2,131), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.62 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.62 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Banach.
Has Banach become more or less common over time?
Between 2010 and 2020, the surname Banach went from 2,071 recorded bearers to 1,858. That is a decrease of 213 (-10.3%). In the national ranking it fell from #14,427 to #15,213.
What does the Census say about the background of Banach?
Among Census respondents with the surname Banach, the largest self-reported group is White at 94.4%. The next largest groups are Hispanic (3.8%) and Two or More Races (1.2%). 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?
White is the largest self-reported group for the surname Banach in the 2020 Census, accounting for 94.4% (1,754 people in the source table).
What is the full ancestry breakdown?
Banach appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.4%), Hispanic (3.8%), Two or More Races (1.2%). 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 Banach (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 Banach mean?
A Polish habitational surname derived from the place name Banachów, likely referring to someone from that locality. 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 Banach (0.62 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 are called Banach?
Find out how many Americans have the surname Banach on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.