2000
#4,473
National surname rank
Recorded bearers 7,296
First available Census row
Per 100,000 2.70
Rare Last name
Rudy
A diminutive of the German name Rudolf, meaning "famous wolf," or a nickname for someone with a ruddy complexion.
According to the 2020 US Census Bureau surname tables, roughly 7,548 Americans carry the last name Rudy. That puts it at #5,139 in the national surname ranking, appearing at a frequency of 2.20 per 100,000 people (about 1 in 45,410 residents).
This page is the full Name Census profile for the Rudy 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
7.5K
1 in 45,410
Census rank
#5,139
2020 decennial data
Per 100,000
2.2
Frequency rate
Recorded bearers
6.6K
rare in the US
Popularity narrative
The Census Bureau recorded 6,582 bearers of the surname Rudy in its 2020 decennial surname file. At a rate of 2.20 per 100,000 residents, it holds the 5139th position in the national surname ranking.
Among Census respondents with the surname Rudy, the largest self-reported group is White at 90.7%. The next largest groups are Hispanic (4.2%) and Two or More Races (3.0%).
Origin
Meaning and origin of Rudy
The surname Rudy originated in Germany, with roots tracing back to the 9th century. It is derived from the Germanic personal name Rudolf, which is composed of the elements "hruod" meaning "fame" and "wolf" meaning "wolf." The name initially referred to someone renowned for their wolf-like ferocity in battle.
In medieval times, the name was often spelled as Rudolff, Rudolphe, or Rodolphe. It appeared in various historical records, such as the Codex Diplomaticus Saxoniae Regiae, a collection of Saxon charters from the 9th to 13th centuries.
One of the earliest documented instances of the surname Rudy can be found in the 1086 Domesday Book, which recorded landowners in England after the Norman Conquest. The name was listed as Rodulf, likely referring to a person of German or Norman descent.
Over the centuries, the name Rudy has been associated with several notable figures. One of the most famous was Rudolf II (1552-1612), the Holy Roman Emperor from 1576 to 1612, known for his patronage of the arts and interest in occult sciences.
Another prominent individual was Rudolf Steiner (1861-1925), an Austrian philosopher and social reformer who founded the anthroposophical movement and the Waldorf education system.
In the realm of sports, Rudolf Nureyev (1938-1993) was a renowned Russian ballet dancer and choreographer, celebrated for his exceptional technique and artistry.
The name Rudy also gained recognition through Rudolf Diesel (1858-1913), the German inventor and mechanical engineer who developed the diesel engine, revolutionizing the transportation industry.
Rudolf Hess (1894-1987), a prominent Nazi leader and Adolf Hitler's deputy, was another historical figure with this surname, though his legacy remains controversial.
These examples illustrate the diverse backgrounds and achievements associated with the surname Rudy throughout history, reflecting its German origins and the widespread influence of individuals bearing this name across various fields.
Demographics
Ancestry and ethnicity for Rudy
Among Census respondents with the surname Rudy, the largest self-reported group is White at 90.7%. The next largest groups are Hispanic (4.2%) and Two or More Races (3.0%).
The bar chart below shows how Rudy 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 Rudy surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.7% · 5,968
- Hispanic or Latino4.2% · 274
- Two or more races3.0% · 200
- Black or African American1.3% · 85
- Asian and Pacific Islander0.7% · 47
- American Indian and Alaska Native0.1% · 8
Timeline
Historical Census data for Rudy
Rudy 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
#4,969
National surname rank
Recorded bearers 7,069
-227 bearers (-3.1%)
Per 100,000 2.40
Rank movement Down 496 places
2020
#5,139
National surname rank
Recorded bearers 6,582
-487 bearers (-6.9%)
Per 100,000 2.20
Rank movement Down 170 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #4,473 | 7,296 | 2.70 | First available Census row | First available Census row |
| 2010 | #4,969 | 7,069 | 2.40 | -227 bearers (-3.1%) | Down 496 places |
| 2020 | #5,139 | 6,582 | 2.20 | -487 bearers (-6.9%) | Down 170 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 Rudy 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 | #4,969 | #5,139 | -3.4% |
| Count | 7,069 | 6,582 | -6.9% |
| Per 100K | 2.40 | 2.20 | -8.2% |
Between the 2010 and 2020 Census, the number of Rudy bearers went from 7,069 to 6,582 (-6.9% change). The surname moved down 170 positions in the national ranking, going from #4,969 to #5,139.
FAQ
Rudy surname: questions and answers
How many people in the U.S. have the surname Rudy?
Name Census estimates that about 7,548 living Americans carry the surname Rudy. Using the current population baseline, that works out to roughly 1 in 45,410 residents.
How common is Rudy?
Rudy ranks #5,139 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 2.20 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 6,582 people with the surname Rudy. That is different from the site's living-bearer estimate (7,548), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 2.2 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 2.20 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 Rudy.
Has Rudy become more or less common over time?
Between 2010 and 2020, the surname Rudy went from 7,069 recorded bearers to 6,582. That is a decrease of 487 (-6.9%). In the national ranking it fell from #4,969 to #5,139.
What does the Census say about the background of Rudy?
Among Census respondents with the surname Rudy, the largest self-reported group is White at 90.7%. The next largest groups are Hispanic (4.2%) and Two or More Races (3.0%). 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?
White is the largest self-reported group for the surname Rudy in the 2020 Census, accounting for 90.7% (5,968 people in the source table).
What is the full ancestry breakdown?
Rudy appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.7%), Hispanic (4.2%), Two or More Races (3.0%). 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 Rudy (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 Rudy mean?
A diminutive of the German name Rudolf, meaning "famous wolf," or a nickname for someone with a ruddy complexion. 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 Rudy (2.20 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 surname Rudy?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.