2000
#121,780
National surname rank
Recorded bearers 131
First available Census row
Per 100,000 0.05
Very Rare Last name
Kokocinski
A Polish surname referring to one from the region of Kokocino.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Kokocinski. That puts it at #154,182 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,904,698 residents).
This page is the full Name Census profile for the Kokocinski 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
118
1 in 2,904,698
Census rank
#154,182
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
103
very rare in the US
Popularity narrative
The Census Bureau recorded 103 bearers of the surname Kokocinski in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154182nd position in the national surname ranking.
Among Census respondents with the surname Kokocinski, the largest self-reported group is White at 94.2%. The next largest groups are Hispanic (1.9%) and Two or More Races (1.9%).
Origin
Meaning and origin of Kokocinski
The surname Kokocinski is of Polish origin and can be traced back to the 15th century. It is derived from the Polish word "kokot," which means "rooster" or "cock." The name likely originated as a nickname for someone with traits associated with a rooster, such as a loud or boastful personality.
One of the earliest recorded instances of the Kokocinski name can be found in the Nieszawa Parish Records from 1428, where a person named Jan Kokocinski is mentioned. The name also appears in other historical records from various regions of Poland, including the Sandomierz region and the Krakow area.
During the Middle Ages, the Kokocinski name was often spelled with variations such as Kokoczynski, Kokoczenski, or Kokoczyński. These variations were likely due to regional differences in pronunciation and spelling conventions of the time.
In the 16th century, the Kokocinski family had a notable presence in the town of Wieliczka, near Krakow. Records show that in 1548, a man named Stanislaw Kokocinski held the position of a salt mine overseer in Wieliczka, which was an important position at the time due to the significance of the salt trade.
Another notable figure with the Kokocinski surname was Bartlomiej Kokocinski, a Polish noble who lived in the 17th century. He was a landowner and a member of the Szlachta (Polish nobility) in the Lublin region. Historical records from 1642 mention his involvement in a legal dispute over land ownership.
In the 18th century, a Franciscan friar named Grzegorz Kokocinski (1718-1784) gained recognition for his work as a historian and writer. He authored several books on the history of Polish monasteries and religious orders.
During the 19th century, the Kokocinski name was found in various parts of Poland, including the Kielce region and the Radom area. One notable individual from this period was Michal Kokocinski (1832-1891), a Polish painter and illustrator known for his landscapes and portraits.
Throughout its history, the Kokocinski surname has been associated with various professions and social classes, from nobles and landowners to artisans, clergymen, and artists. Despite its humble origins as a nickname, the name has gained a strong presence in Polish history and culture over the centuries.
Demographics
Ancestry and ethnicity for Kokocinski
Among Census respondents with the surname Kokocinski, the largest self-reported group is White at 94.2%. The next largest groups are Hispanic (1.9%) and Two or More Races (1.9%).
The bar chart below shows how Kokocinski 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 Kokocinski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.2% · 97
- Hispanic or Latino1.9% · 2
- Two or more races1.9% · 2
- Black or African American1.0% · 1
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Kokocinski
Kokocinski 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
-18 bearers (-13.7%)
Per 100,000 0.04
Rank movement Down 24,421 places
2020
#154,182
National surname rank
Recorded bearers 103
-10 bearers (-8.8%)
Per 100,000 0.03
Rank movement Down 7,981 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #121,780 | 131 | 0.05 | First available Census row | First available Census row |
| 2010 | #146,201 | 113 | 0.04 | -18 bearers (-13.7%) | Down 24,421 places |
| 2020 | #154,182 | 103 | 0.03 | -10 bearers (-8.8%) | Down 7,981 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 Kokocinski 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 | #154,182 | -5.5% |
| Count | 113 | 103 | -8.8% |
| Per 100K | 0.04 | 0.03 | -13.9% |
Between the 2010 and 2020 Census, the number of Kokocinski bearers went from 113 to 103 (-8.8% change). The surname moved down 7,981 positions in the national ranking, going from #146,201 to #154,182.
FAQ
Kokocinski surname: questions and answers
How many people in the U.S. have the surname Kokocinski?
Name Census estimates that about 118 living Americans carry the surname Kokocinski. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Kokocinski?
Kokocinski ranks #154,182 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 103 people with the surname Kokocinski. That is different from the site's living-bearer estimate (118), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Kokocinski.
Has Kokocinski become more or less common over time?
Between 2010 and 2020, the surname Kokocinski went from 113 recorded bearers to 103. That is a decrease of 10 (-8.8%). In the national ranking it fell from #146,201 to #154,182.
What does the Census say about the background of Kokocinski?
Among Census respondents with the surname Kokocinski, the largest self-reported group is White at 94.2%. The next largest groups are Hispanic (1.9%) 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 Kokocinski in the 2020 Census, accounting for 94.2% (97 people in the source table).
What is the full ancestry breakdown?
Kokocinski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.2%), Hispanic (1.9%), 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 Kokocinski (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 Kokocinski mean?
A Polish surname referring to one from the region of Kokocino. 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 Kokocinski (0.03 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 Kokocinski?
Find out how many people have the surname Kokocinski on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.