2000
#140,756
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Jaroszewicz
A Polish surname probably derived from the given name Jarosz.
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Jaroszewicz. 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 Jaroszewicz 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 Jaroszewicz 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 Jaroszewicz, the largest self-reported group is White at 88.4%. The next largest groups are Hispanic (7.4%) and Two or More Races (2.5%).
Origin
Meaning and origin of Jaroszewicz
The surname Jaroszewicz is of Polish origin, derived from the personal name Jarosz, which in turn comes from the Slavic root "Jar" meaning "spring" or "heat." The name likely originated in the 12th or 13th century, as Polish surnames began to emerge and become hereditary during this period.
Jaroszewicz is a patronymic surname, meaning it was initially formed by adding the possessive suffix "-ewicz" or "-owicz" to the personal name Jarosz, indicating "son of Jarosz." This naming convention was common in Polish and other Slavic cultures, where surnames often signified the father's name or occupation.
The earliest recorded instances of the Jaroszewicz surname can be traced back to historical records and documents from various regions of Poland, particularly the areas that now comprise modern-day Belarus and Lithuania, which were once part of the Polish-Lithuanian Commonwealth.
One of the earliest known bearers of the name was Mikołaj Jaroszewicz, a Polish nobleman who lived in the 16th century and served as a royal court official. Another notable figure was Piotr Jaroszewicz, who was born in 1909 and served as the Prime Minister of Poland from 1970 to 1980.
In the 17th century, a branch of the Jaroszewicz family settled in the town of Jaroszewicze, located in what is now Belarus. This town likely took its name from the family, further solidifying the connection between the surname and the area.
Other notable individuals with the Jaroszewicz surname include Wacław Jaroszewicz (1843-1909), a Polish painter and art professor, and Jerzy Jaroszewicz (1919-1992), a Polish military officer and politician who served as the Minister of National Defense in the 1970s.
Throughout its history, the Jaroszewicz surname has seen various spellings and variations, such as Jaroszewicz, Jaroszewic, Jaroszewitz, and Jaroszewsky, reflecting the diverse regional dialects and linguistic influences within the Polish-Lithuanian Commonwealth.
While the Jaroszewicz name has its roots in Poland, it has since spread to other parts of the world through immigration and diaspora communities, with bearers of the name found in countries like the United States, Canada, and Australia.
Demographics
Ancestry and ethnicity for Jaroszewicz
Among Census respondents with the surname Jaroszewicz, the largest self-reported group is White at 88.4%. The next largest groups are Hispanic (7.4%) and Two or More Races (2.5%).
The bar chart below shows how Jaroszewicz 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 Jaroszewicz surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.4% · 107
- Hispanic or Latino7.4% · 9
- Two or more races2.5% · 3
- American Indian and Alaska Native1.7% · 2
Timeline
Historical Census data for Jaroszewicz
Jaroszewicz 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
+19 bearers (+17.4%)
Per 100,000 0.04
Rank movement Up 8,550 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 | #140,756 | 109 | 0.04 | First available Census row | First available Census row |
| 2010 | #132,206 | 128 | 0.04 | +19 bearers (+17.4%) | Up 8,550 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 Jaroszewicz 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 Jaroszewicz 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
Jaroszewicz surname: questions and answers
How many people in the U.S. have the surname Jaroszewicz?
Name Census estimates that about 139 living Americans carry the surname Jaroszewicz. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Jaroszewicz?
Jaroszewicz 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 Jaroszewicz. 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 Jaroszewicz.
Has Jaroszewicz become more or less common over time?
Between 2010 and 2020, the surname Jaroszewicz 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 Jaroszewicz?
Among Census respondents with the surname Jaroszewicz, the largest self-reported group is White at 88.4%. The next largest groups are Hispanic (7.4%) and Two or More Races (2.5%). 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 Jaroszewicz in the 2020 Census, accounting for 88.4% (107 people in the source table).
What is the full ancestry breakdown?
Jaroszewicz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.4%), Hispanic (7.4%), Two or More Races (2.5%). 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 Jaroszewicz (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 Jaroszewicz mean?
A Polish surname probably derived from the given name Jarosz. 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 Jaroszewicz (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 common is the surname Jaroszewicz?
See how many Americans have the surname Jaroszewicz on HowManyOfMe.org, our sister site built around that single question.