2000
#135,837
National surname rank
Recorded bearers 114
First available Census row
Per 100,000 0.04
Very Rare Last name
Fronius
A surname originating in Austria and Germany, referring to one who performed a service.
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Fronius. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Fronius 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Fronius in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Fronius, the largest self-reported group is White at 90.4%. The next largest groups are Two or More Races (6.1%) and Asian/Pacific Islander (1.7%).
Origin
Meaning and origin of Fronius
The surname FRONIUS originated in Germany, with its earliest recorded use dating back to the 16th century. The name is derived from the Old German word "fron," meaning "noble" or "free," indicating that the original bearers of this name were likely of noble or free status.
One of the earliest recorded instances of the FRONIUS name can be found in the records of the city of Cologne, where a certain Johannes Fronius was mentioned in a document from 1564. Another early record comes from the town of Gelnhausen, where a man named Henrich Fronius was registered in 1587.
The FRONIUS surname is also closely associated with the town of Rüdesheim am Rhein, a historic wine-growing region in the Rheingau region of Germany. It is believed that a branch of the family settled in this area during the 17th century, and the name can be found in local records and church registers from that time.
One notable bearer of the FRONIUS name was Johann Fronius, a German theologian and philosopher who lived in the 16th century. He was born in Bamberg in 1529 and is known for his writings on theology and his contributions to the development of Protestant thought during the Reformation era.
Another historical figure with the FRONIUS surname was Gottfried Fronius, a German artist and engraver who lived in the 18th century. He was born in Nuremberg in 1701 and is best known for his intricate copper engravings, many of which depicted landscapes and architectural scenes.
In the 19th century, a man named Friedrich Fronius made a name for himself as a successful businessman and industrialist in the city of Dresden. He founded the Fronius & Co. company, which manufactured machinery and equipment for the textile industry, and his entrepreneurial efforts contributed significantly to the economic growth of the region.
While the FRONIUS name has its roots in Germany, it has since spread to other parts of the world through migration and intermarriage. However, its origins and historical significance remain firmly rooted in the German-speaking regions of Central Europe.
Demographics
Ancestry and ethnicity for Fronius
Among Census respondents with the surname Fronius, the largest self-reported group is White at 90.4%. The next largest groups are Two or More Races (6.1%) and Asian/Pacific Islander (1.7%).
The bar chart below shows how Fronius 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 Fronius surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.4% · 104
- Two or more races6.1% · 7
- Asian and Pacific Islander1.7% · 2
- Black or African American0.9% · 1
- Hispanic or Latino0.9% · 1
Timeline
Historical Census data for Fronius
Fronius 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
#143,149
National surname rank
Recorded bearers 116
+2 bearers (+1.8%)
Per 100,000 0.04
Rank movement Down 7,312 places
2020
#145,757
National surname rank
Recorded bearers 115
-1 bearers (-0.9%)
Per 100,000 0.04
Rank movement Down 2,608 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #135,837 | 114 | 0.04 | First available Census row | First available Census row |
| 2010 | #143,149 | 116 | 0.04 | +2 bearers (+1.8%) | Down 7,312 places |
| 2020 | #145,757 | 115 | 0.04 | -1 bearers (-0.9%) | Down 2,608 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 Fronius 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 | #143,149 | #145,757 | -1.8% |
| Count | 116 | 115 | -0.9% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Fronius bearers went from 116 to 115 (-0.9% change). The surname moved down 2,608 positions in the national ranking, going from #143,149 to #145,757.
FAQ
Fronius surname: questions and answers
How many people in the U.S. have the surname Fronius?
Name Census estimates that about 132 living Americans carry the surname Fronius. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Fronius?
Fronius ranks #145,757 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 115 people with the surname Fronius. That is different from the site's living-bearer estimate (132), 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 Fronius.
Has Fronius become more or less common over time?
Between 2010 and 2020, the surname Fronius went from 116 recorded bearers to 115. That is a decrease of 1 (-0.9%). In the national ranking it fell from #143,149 to #145,757.
What does the Census say about the background of Fronius?
Among Census respondents with the surname Fronius, the largest self-reported group is White at 90.4%. The next largest groups are Two or More Races (6.1%) and Asian/Pacific Islander (1.7%). 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?
White is the largest self-reported group for the surname Fronius in the 2020 Census, accounting for 90.4% (104 people in the source table).
What is the full ancestry breakdown?
Fronius appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.4%), Two or More Races (6.1%), Asian/Pacific Islander (1.7%). 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 Fronius (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 Fronius mean?
A surname originating in Austria and Germany, referring to one who performed a service. 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 Fronius (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 share the surname Fronius?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.