2000
#129,619
National surname rank
Recorded bearers 121
First available Census row
Per 100,000 0.04
Very Rare Last name
Jamrozik
A Polish surname potentially derived from the word "jamróz" meaning "whitehorn" or "hawthorn."
According to the 2020 US Census Bureau surname tables, roughly 131 Americans carry the last name Jamrozik. That puts it at #146,495 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,616,445 residents).
This page is the full Name Census profile for the Jamrozik 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
131
1 in 2,616,445
Census rank
#146,495
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
114
very rare in the US
Popularity narrative
The Census Bureau recorded 114 bearers of the surname Jamrozik in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 146495th position in the national surname ranking.
Among Census respondents with the surname Jamrozik, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (3.5%) and Black (1.8%).
Origin
Meaning and origin of Jamrozik
The surname Jamrozik originates from Poland, emerging in the late 15th century. It derives from the Polish word "jamroza," which means "buttercup," a type of yellow flowering plant. The name likely referred to someone who lived near a field of buttercups or cultivated the flowers.
One of the earliest recorded instances of the name Jamrozik appears in a 1492 tax record from the town of Krakow, where a farmer named Maciej Jamrozik is listed among landowners. In the 16th century, the name crops up in various parish records across southern Poland, particularly in the regions of Lesser Poland and Silesia.
A notable early bearer of the Jamrozik name was Jan Jamrozik, a merchant from Poznan who was granted a coat of arms in 1578 by King Stefan Batory. The coat of arms featured three golden buttercups on a green field, alluding to the name's floral origins.
In the 17th century, the Jamrozik family expanded across Poland, with branches settling in various cities and towns. Andrzej Jamrozik, born in 1619, was a respected lawyer in Warsaw known for his expertise in property law. His son, Tomasz Jamrozik (1647-1712), served as a councilman in the city of Lublin.
During the 18th century, the Jamrozik name gained prominence among the Polish nobility. Marcin Jamrozik (1724-1801) was a landowner and minor nobleman in the region of Galicia, then part of the Polish-Lithuanian Commonwealth. His grandson, Stanislaw Jamrozik (1792-1867), was a cavalry officer who fought in the November Uprising against Russian rule.
As the centuries passed, the Jamrozik name spread beyond Poland's borders, carried by emigrants seeking new opportunities. In the late 19th century, Franciszek Jamrozik (1856-1924), a teacher from Krakow, settled in the United States and taught in Polish immigrant communities in Chicago and Milwaukee.
Throughout its history, the surname Jamrozik has been associated with various occupations, from farmers and merchants to lawyers, soldiers, and educators. Its roots in the Polish language and connection to the humble buttercup flower have endured, reflecting the name's enduring legacy and cultural significance.
Demographics
Ancestry and ethnicity for Jamrozik
Among Census respondents with the surname Jamrozik, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (3.5%) and Black (1.8%).
The bar chart below shows how Jamrozik 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 Jamrozik surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.9% · 107
- Hispanic or Latino3.5% · 4
- Black or African American1.8% · 2
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Jamrozik
Jamrozik 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
#146,201
National surname rank
Recorded bearers 113
-8 bearers (-6.6%)
Per 100,000 0.04
Rank movement Down 16,582 places
2020
#146,495
National surname rank
Recorded bearers 114
+1 bearers (+0.9%)
Per 100,000 0.04
Rank movement Down 294 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #129,619 | 121 | 0.04 | First available Census row | First available Census row |
| 2010 | #146,201 | 113 | 0.04 | -8 bearers (-6.6%) | Down 16,582 places |
| 2020 | #146,495 | 114 | 0.04 | +1 bearers (+0.9%) | Down 294 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 Jamrozik 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 | #146,201 | #146,495 | -0.2% |
| Count | 113 | 114 | 0.9% |
| Per 100K | 0.04 | 0.04 | -4.6% |
Between the 2010 and 2020 Census, the number of Jamrozik bearers went from 113 to 114 (+0.9% change). The surname moved down 294 positions in the national ranking, going from #146,201 to #146,495.
FAQ
Jamrozik surname: questions and answers
How many people in the U.S. have the surname Jamrozik?
Name Census estimates that about 131 living Americans carry the surname Jamrozik. Using the current population baseline, that works out to roughly 1 in 2,616,445 residents.
How common is Jamrozik?
Jamrozik ranks #146,495 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 114 people with the surname Jamrozik. That is different from the site's living-bearer estimate (131), 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 Jamrozik.
Has Jamrozik become more or less common over time?
Between 2010 and 2020, the surname Jamrozik went from 113 recorded bearers to 114. That is an increase of 1 (+0.9%). In the national ranking it fell from #146,201 to #146,495.
What does the Census say about the background of Jamrozik?
Among Census respondents with the surname Jamrozik, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (3.5%) and Black (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 Jamrozik in the 2020 Census, accounting for 93.9% (107 people in the source table).
What is the full ancestry breakdown?
Jamrozik appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.9%), Hispanic (3.5%), Black (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 Jamrozik (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 Jamrozik mean?
A Polish surname potentially derived from the word "jamróz" meaning "whitehorn" or "hawthorn." 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 Jamrozik (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 Jamrozik?
Find out how many Americans have the surname Jamrozik on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.