2000
#4,455
National surname rank
Recorded bearers 7,336
First available Census row
Per 100,000 2.72
Rare Last name
Jablonski
Derived from a Polish place name meaning "of the apple tree," referring to someone living near apple trees.
According to the 2020 US Census Bureau surname tables, roughly 7,948 Americans carry the last name Jablonski. That puts it at #4,926 in the national surname ranking, appearing at a frequency of 2.32 per 100,000 people (about 1 in 43,125 residents).
This page is the full Name Census profile for the Jablonski 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 Jablonski with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
7.9K
1 in 43,125
Census rank
#4,926
2020 decennial data
Per 100,000
2.3
Frequency rate
Recorded bearers
6.9K
rare in the US
Popularity narrative
The Census Bureau recorded 6,931 bearers of the surname Jablonski in its 2020 decennial surname file. At a rate of 2.32 per 100,000 residents, it holds the 4926th position in the national surname ranking.
Among Census respondents with the surname Jablonski, the largest self-reported group is White at 93.6%. The next largest groups are Hispanic (3.1%) and Two or More Races (2.0%).
Origin
Meaning and origin of Jablonski
The surname Jablonski originated in Poland and the surrounding regions in Eastern Europe during the late medieval period. It is derived from the Polish word "jabłoń," meaning "apple tree," and the suffix "-ski," indicating a Polish possessive form. This suggests that the name was likely given to someone who lived near an apple orchard or was associated with apple cultivation.
One of the earliest recorded instances of the name can be found in the "Księga Henrykowska," a 13th-century manuscript from the Silesian region of Poland. This document mentions a person named "Jablonski" as a witness in a legal dispute over land ownership.
In the 16th century, the name appeared in various records from the Polish-Lithuanian Commonwealth, such as tax registers and land deeds. One notable example is Jan Jablonski, a wealthy landowner and merchant from the city of Krakow, who lived from 1520 to 1587.
During the 17th and 18th centuries, the Jablonski name became associated with several prominent scholars and intellectuals. Daniel Ernst Jablonski (1660-1741) was a renowned German theologian and linguist who made significant contributions to the study of the Hebrew language and Jewish culture.
Another noteworthy figure was Johann Theodor Jablonski (1654-1731), a Polish-German philosopher and mathematician who served as the rector of the University of Frankfurt (Oder) and was a member of the prestigious Prussian Academy of Sciences.
In the 19th century, the Jablonski name gained recognition in the field of music. Gustaw Adolf Jablonski (1835-1894) was a Polish composer and pianist who wrote numerous works for piano and orchestra, including the popular "Polish Dances."
The name Jablonski can also be traced back to several place names in Poland, such as the village of Jabłonka in the Małopolska region and the town of Jabłonowo in the Warmian-Masurian Voivodeship. These locations likely influenced the surname's origins and geographical distribution.
Throughout history, the Jablonski surname has undergone various spelling variations, including Jablonsky, Jablonski, and Jablonsky, reflecting regional dialects and linguistic changes over time.
Demographics
Ancestry and ethnicity for Jablonski
Among Census respondents with the surname Jablonski, the largest self-reported group is White at 93.6%. The next largest groups are Hispanic (3.1%) and Two or More Races (2.0%).
The bar chart below shows how Jablonski 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 Jablonski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.6% · 6,484
- Hispanic or Latino3.1% · 216
- Two or more races2.0% · 141
- Asian and Pacific Islander0.6% · 45
- Black or African American0.5% · 32
- American Indian and Alaska Native0.2% · 13
Timeline
Historical Census data for Jablonski
Jablonski 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
#4,743
National surname rank
Recorded bearers 7,469
+133 bearers (+1.8%)
Per 100,000 2.53
Rank movement Down 288 places
2020
#4,926
National surname rank
Recorded bearers 6,931
-538 bearers (-7.2%)
Per 100,000 2.32
Rank movement Down 183 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #4,455 | 7,336 | 2.72 | First available Census row | First available Census row |
| 2010 | #4,743 | 7,469 | 2.53 | +133 bearers (+1.8%) | Down 288 places |
| 2020 | #4,926 | 6,931 | 2.32 | -538 bearers (-7.2%) | Down 183 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 Jablonski 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 | #4,743 | #4,926 | -3.9% |
| Count | 7,469 | 6,931 | -7.2% |
| Per 100K | 2.53 | 2.32 | -8.3% |
Between the 2010 and 2020 Census, the number of Jablonski bearers went from 7,469 to 6,931 (-7.2% change). The surname moved down 183 positions in the national ranking, going from #4,743 to #4,926.
FAQ
Jablonski surname: questions and answers
How many people in the U.S. have the surname Jablonski?
Name Census estimates that about 7,948 living Americans carry the surname Jablonski. Using the current population baseline, that works out to roughly 1 in 43,125 residents.
How common is Jablonski?
Jablonski ranks #4,926 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 2.32 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 6,931 people with the surname Jablonski. That is different from the site's living-bearer estimate (7,948), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 2.32 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 2.32 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 Jablonski.
Has Jablonski become more or less common over time?
Between 2010 and 2020, the surname Jablonski went from 7,469 recorded bearers to 6,931. That is a decrease of 538 (-7.2%). In the national ranking it fell from #4,743 to #4,926.
What does the Census say about the background of Jablonski?
Among Census respondents with the surname Jablonski, the largest self-reported group is White at 93.6%. The next largest groups are Hispanic (3.1%) and Two or More Races (2.0%). 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 Jablonski in the 2020 Census, accounting for 93.6% (6,484 people in the source table).
What is the full ancestry breakdown?
Jablonski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.6%), Hispanic (3.1%), Two or More Races (2.0%). 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 Jablonski (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 Jablonski mean?
Derived from a Polish place name meaning "of the apple tree," referring to someone living near apple trees. 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 Jablonski (2.32 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 Jablonski?
Want to know how common the surname Jablonski is? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.