2000
#10,696
National surname rank
Recorded bearers 2,741
First available Census row
Per 100,000 1.02
Rare Last name
Adamczyk
A Polish surname derived from the given name Adam, indicating the original bearer was a son of Adam.
According to the 2020 US Census Bureau surname tables, roughly 3,074 Americans carry the last name Adamczyk. That puts it at #11,270 in the national surname ranking, appearing at a frequency of 0.90 per 100,000 people (about 1 in 111,501 residents).
This page is the full Name Census profile for the Adamczyk 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 Adamczyk with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
3.1K
1 in 111,501
Census rank
#11,270
2020 decennial data
Per 100,000
0.9
Frequency rate
Recorded bearers
2.7K
rare in the US
Popularity narrative
The Census Bureau recorded 2,681 bearers of the surname Adamczyk in its 2020 decennial surname file. At a rate of 0.90 per 100,000 residents, it holds the 11270th position in the national surname ranking.
Among Census respondents with the surname Adamczyk, the largest self-reported group is White at 94.9%. The next largest groups are Hispanic (2.2%) and Two or More Races (1.9%).
Origin
Meaning and origin of Adamczyk
The surname Adamczyk is of Polish origin, derived from the personal name Adam, with the addition of the Polish diminutive suffix "-czyk". The name is believed to have emerged sometime in the 13th or 14th century in the region of Silesia, which was part of the Kingdom of Poland at that time.
The earliest recorded mention of the surname Adamczyk can be found in historical documents from the city of Wrocław (then known as Breslau) in Silesia, dating back to the late 15th century. One notable early bearer of the name was Jan Adamczyk, a merchant who lived in Wrocław in the early 16th century and was involved in trade with neighboring regions.
In the 17th century, the Adamczyk surname began to spread to other parts of Poland, particularly the regions of Greater Poland and Masovia. During this period, the name was sometimes spelled in its alternative form, "Adamczyk", which reflects the regional variations in pronunciation.
One of the most prominent historical figures with the Adamczyk surname was Wojciech Adamczyk (1617-1689), a Polish Catholic priest and theologian who served as a canon of the Wawel Cathedral in Kraków. He was known for his scholarly works on theology and his contributions to the intellectual life of the city.
In the 19th century, the Adamczyk surname gained further recognition with the birth of Józef Adamczyk (1832-1896), a Polish painter and illustrator who specialized in portraiture and historical scenes. His works are held in several Polish museums and galleries, including the National Museum in Warsaw.
Another notable bearer of the Adamczyk name was Mieczysław Adamczyk (1890-1972), a Polish military officer who served in World War I and later became a major general in the Polish Army during the interwar period and World War II.
Throughout its history, the Adamczyk surname has been associated with various professions, including merchants, artisans, clergy, and military personnel. While it remains predominantly concentrated in Poland, it has also spread to other parts of the world through Polish emigration in the 19th and 20th centuries.
Demographics
Ancestry and ethnicity for Adamczyk
Among Census respondents with the surname Adamczyk, the largest self-reported group is White at 94.9%. The next largest groups are Hispanic (2.2%) and Two or More Races (1.9%).
The bar chart below shows how Adamczyk 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 Adamczyk surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.9% · 2,543
- Hispanic or Latino2.2% · 58
- Two or more races1.9% · 51
- Black or African American0.4% · 11
- American Indian and Alaska Native0.4% · 10
- Asian and Pacific Islander0.3% · 8
Timeline
Historical Census data for Adamczyk
Adamczyk 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
#11,183
National surname rank
Recorded bearers 2,828
+87 bearers (+3.2%)
Per 100,000 0.96
Rank movement Down 487 places
2020
#11,270
National surname rank
Recorded bearers 2,681
-147 bearers (-5.2%)
Per 100,000 0.90
Rank movement Down 87 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #10,696 | 2,741 | 1.02 | First available Census row | First available Census row |
| 2010 | #11,183 | 2,828 | 0.96 | +87 bearers (+3.2%) | Down 487 places |
| 2020 | #11,270 | 2,681 | 0.90 | -147 bearers (-5.2%) | Down 87 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 Adamczyk 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 | #11,183 | #11,270 | -0.8% |
| Count | 2,828 | 2,681 | -5.2% |
| Per 100K | 0.96 | 0.90 | -6.6% |
Between the 2010 and 2020 Census, the number of Adamczyk bearers went from 2,828 to 2,681 (-5.2% change). The surname moved down 87 positions in the national ranking, going from #11,183 to #11,270.
FAQ
Adamczyk surname: questions and answers
How many people in the U.S. have the surname Adamczyk?
Name Census estimates that about 3,074 living Americans carry the surname Adamczyk. Using the current population baseline, that works out to roughly 1 in 111,501 residents.
How common is Adamczyk?
Adamczyk ranks #11,270 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.90 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 2,681 people with the surname Adamczyk. That is different from the site's living-bearer estimate (3,074), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.9 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.90 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 Adamczyk.
Has Adamczyk become more or less common over time?
Between 2010 and 2020, the surname Adamczyk went from 2,828 recorded bearers to 2,681. That is a decrease of 147 (-5.2%). In the national ranking it fell from #11,183 to #11,270.
What does the Census say about the background of Adamczyk?
Among Census respondents with the surname Adamczyk, the largest self-reported group is White at 94.9%. The next largest groups are Hispanic (2.2%) and Two or More Races (1.9%). 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 Adamczyk in the 2020 Census, accounting for 94.9% (2,543 people in the source table).
What is the full ancestry breakdown?
Adamczyk appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.9%), Hispanic (2.2%), Two or More Races (1.9%). 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 Adamczyk (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 Adamczyk mean?
A Polish surname derived from the given name Adam, indicating the original bearer was a son of Adam. 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 Adamczyk (0.90 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 Adamczyk?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.