2000
#137,816
National surname rank
Recorded bearers 112
First available Census row
Per 100,000 0.04
Very Rare Last name
Iwaniuk
A surname derived from Ukrainian, meaning 'son of Ivan'.
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Iwaniuk. That puts it at #141,309 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,465,859 residents).
This page is the full Name Census profile for the Iwaniuk 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
139
1 in 2,465,859
Census rank
#141,309
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
121
very rare in the US
Popularity narrative
The Census Bureau recorded 121 bearers of the surname Iwaniuk in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 141309th position in the national surname ranking.
Among Census respondents with the surname Iwaniuk, the largest self-reported group is White at 95.9%. The next largest groups are Two or More Races (2.5%) and Hispanic (0.8%).
Origin
Meaning and origin of Iwaniuk
The surname Iwaniuk is of Ukrainian origin, emerging in the 16th century. It is a patronymic name derived from the personal name Ivan, which is the Ukrainian form of the biblical name John. The suffix "-uk" is a diminutive ending, suggesting an endearing or familial tone.
While the name Iwaniuk is not found in notable historical records like the Domesday Book, it likely originated in the western regions of modern-day Ukraine, where Ukrainian language and culture have deep roots. The earliest recorded instances of the name can be traced back to village records and church registers from the 16th and 17th centuries in areas like Lviv, Ternopil, and Ivano-Frankivsk.
One of the earliest known individuals with the surname Iwaniuk was Hryhoriy Iwaniuk, a Ukrainian Cossack who participated in the Khmelnytsky Uprising against Polish rule in the mid-17th century. Another notable figure was Petro Iwaniuk, a Ukrainian artist and painter born in 1829 in the village of Strilche, known for his landscapes and religious works.
In the 19th century, Mariia Iwaniuk (1835-1908) was a prominent Ukrainian educator and advocate for women's rights, working to establish schools and educational opportunities for girls in rural areas. Her efforts helped pave the way for increased literacy and empowerment among Ukrainian women.
The early 20th century saw the emergence of Mykhailo Iwaniuk (1892-1937), a Ukrainian writer and journalist who contributed to the development of modern Ukrainian literature. His works often explored themes of peasant life and the struggles of the working class.
During World War II, Vasyl Iwaniuk (1919-1944) was a member of the Ukrainian Insurgent Army, a nationalist paramilitary group that fought against both Soviet and Nazi forces. He was killed in action in 1944 and is remembered as a symbol of Ukrainian resistance and the struggle for independence.
These are just a few examples of individuals throughout history who have carried the surname Iwaniuk, reflecting its deep roots in Ukrainian culture and the diverse contributions of those who bear this name.
Demographics
Ancestry and ethnicity for Iwaniuk
Among Census respondents with the surname Iwaniuk, the largest self-reported group is White at 95.9%. The next largest groups are Two or More Races (2.5%) and Hispanic (0.8%).
The bar chart below shows how Iwaniuk 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 Iwaniuk surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.9% · 116
- Two or more races2.5% · 3
- Hispanic or Latino0.8% · 1
- American Indian and Alaska Native0.8% · 1
Timeline
Historical Census data for Iwaniuk
Iwaniuk 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
#132,206
National surname rank
Recorded bearers 128
+16 bearers (+14.3%)
Per 100,000 0.04
Rank movement Up 5,610 places
2020
#141,309
National surname rank
Recorded bearers 121
-7 bearers (-5.5%)
Per 100,000 0.04
Rank movement Down 9,103 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #137,816 | 112 | 0.04 | First available Census row | First available Census row |
| 2010 | #132,206 | 128 | 0.04 | +16 bearers (+14.3%) | Up 5,610 places |
| 2020 | #141,309 | 121 | 0.04 | -7 bearers (-5.5%) | Down 9,103 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 Iwaniuk 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 | #132,206 | #141,309 | -6.9% |
| Count | 128 | 121 | -5.5% |
| Per 100K | 0.04 | 0.04 | 1.2% |
Between the 2010 and 2020 Census, the number of Iwaniuk bearers went from 128 to 121 (-5.5% change). The surname moved down 9,103 positions in the national ranking, going from #132,206 to #141,309.
FAQ
Iwaniuk surname: questions and answers
How many people in the U.S. have the surname Iwaniuk?
Name Census estimates that about 139 living Americans carry the surname Iwaniuk. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Iwaniuk?
Iwaniuk ranks #141,309 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 121 people with the surname Iwaniuk. That is different from the site's living-bearer estimate (139), 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 Iwaniuk.
Has Iwaniuk become more or less common over time?
Between 2010 and 2020, the surname Iwaniuk went from 128 recorded bearers to 121. That is a decrease of 7 (-5.5%). In the national ranking it fell from #132,206 to #141,309.
What does the Census say about the background of Iwaniuk?
Among Census respondents with the surname Iwaniuk, the largest self-reported group is White at 95.9%. The next largest groups are Two or More Races (2.5%) and Hispanic (0.8%). 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 Iwaniuk in the 2020 Census, accounting for 95.9% (116 people in the source table).
What is the full ancestry breakdown?
Iwaniuk appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.9%), Two or More Races (2.5%), Hispanic (0.8%). 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 Iwaniuk (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 Iwaniuk mean?
A surname derived from Ukrainian, meaning 'son of Ivan'. 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 Iwaniuk (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 Iwaniuk?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.