2000
#144,908
National surname rank
Recorded bearers 105
First available Census row
Per 100,000 0.04
Very Rare Last name
Bazis
A variant spelling of the surname Baiocchi, derived from the Italian city of Bajocco.
According to the 2020 US Census Bureau surname tables, roughly 128 Americans carry the last name Bazis. That puts it at #147,954 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,677,768 residents).
This page is the full Name Census profile for the Bazis 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
128
1 in 2,677,768
Census rank
#147,954
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
112
very rare in the US
Popularity narrative
The Census Bureau recorded 112 bearers of the surname Bazis in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147954th position in the national surname ranking.
Among Census respondents with the surname Bazis, the largest self-reported group is White at 98.2%. The next largest groups are Two or More Races (1.8%).
Origin
Meaning and origin of Bazis
The surname BAZIS is believed to have originated in modern-day Lithuania during the late medieval period, around the 15th or 16th century. It is thought to have derived from the Lithuanian word "bazė," which means "base" or "foundation," suggesting that the name may have been given to someone who lived near the base of a hill or mountain, or worked in a profession related to construction or masonry.
One of the earliest recorded examples of the BAZIS surname can be found in the Lithuanian State Historical Archives, where a document from the late 16th century mentions a landowner named Jonas BAZIS. This suggests that the name had already become established in the region by that time.
In the 17th century, a prominent Lithuanian noble family with the surname BAZIS gained significant influence and landholdings in the Vilnius region. Mykolas BAZIS (1620-1679) was a respected military leader who fought in the Polish-Lithuanian Commonwealth's wars against Sweden and Russia.
As the BAZIS family spread throughout the Lithuanian territories, variations in spelling and pronunciation emerged. In some areas, the name was written as "BAZYS" or "BAŽYS," reflecting local dialects and linguistic differences.
One notable bearer of the BAZIS surname was Jurgis BAZIS (1790-1855), a Lithuanian philosopher and educator who made significant contributions to the promotion of Lithuanian language and culture during the period of Russian imperial rule.
In the late 19th century, a branch of the BAZIS family emigrated to the United States, settling in the Midwest. Antanas BAZIS (1865-1932), a farmer from the village of Marijampolė, was among the first to arrive in Chicago, where he established a successful business and became active in the city's growing Lithuanian community.
Throughout the 20th century, individuals with the BAZIS surname continued to make their mark in various fields, including literature, politics, and the arts. Viktoras BAZIS (1912-1998), a Lithuanian-American writer and journalist, published several acclaimed novels and short story collections that explored themes of immigration, identity, and cultural preservation.
While the BAZIS surname is not among the most common in Lithuania today, it has endured for centuries and played a role in the country's rich history and cultural heritage.
Demographics
Ancestry and ethnicity for Bazis
Among Census respondents with the surname Bazis, the largest self-reported group is White at 98.2%. The next largest groups are Two or More Races (1.8%).
The bar chart below shows how Bazis 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 Bazis surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.2% · 110
- Two or more races1.8% · 2
Timeline
Historical Census data for Bazis
Bazis 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
#154,907
National surname rank
Recorded bearers 105
+0 bearers (+0.0%)
Per 100,000 0.04
Rank movement Down 9,999 places
2020
#147,954
National surname rank
Recorded bearers 112
+7 bearers (+6.7%)
Per 100,000 0.04
Rank movement Up 6,953 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #144,908 | 105 | 0.04 | First available Census row | First available Census row |
| 2010 | #154,907 | 105 | 0.04 | +0 bearers (+0.0%) | Down 9,999 places |
| 2020 | #147,954 | 112 | 0.04 | +7 bearers (+6.7%) | Up 6,953 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 Bazis 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 | #154,907 | #147,954 | 4.5% |
| Count | 105 | 112 | 6.7% |
| Per 100K | 0.04 | 0.04 | -6.3% |
Between the 2010 and 2020 Census, the number of Bazis bearers went from 105 to 112 (+6.7% change). The surname moved up 6,953 positions in the national ranking, going from #154,907 to #147,954.
FAQ
Bazis surname: questions and answers
How many people in the U.S. have the surname Bazis?
Name Census estimates that about 128 living Americans carry the surname Bazis. Using the current population baseline, that works out to roughly 1 in 2,677,768 residents.
How common is Bazis?
Bazis ranks #147,954 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 112 people with the surname Bazis. That is different from the site's living-bearer estimate (128), 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 Bazis.
Has Bazis become more or less common over time?
Between 2010 and 2020, the surname Bazis went from 105 recorded bearers to 112. That is an increase of 7 (+6.7%). In the national ranking it rose from #154,907 to #147,954.
What does the Census say about the background of Bazis?
Among Census respondents with the surname Bazis, the largest self-reported group is White at 98.2%. The next largest groups are Two or More Races (1.8%). 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 Bazis in the 2020 Census, accounting for 98.2% (110 people in the source table).
What is the full ancestry breakdown?
Bazis appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.2%), Two or More Races (1.8%). 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 Bazis (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 Bazis mean?
A variant spelling of the surname Baiocchi, derived from the Italian city of Bajocco. 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 Bazis (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 last name Bazis?
Our sister site HowManyOfMe.org answers how many people are called Bazis at a glance, with the living-bearer count up front.