2010
#150,452
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Kosmidis
A Greek surname derived from the Greek word "kosmos" meaning world or universe, possibly referring to a person's global outlook or worldliness.
According to the 2020 US Census Bureau surname tables, roughly 131 Americans carry the last name Kosmidis. 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 Kosmidis 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 Kosmidis 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 Kosmidis, the largest self-reported group is White at 87.7%. The next largest groups are Hispanic (4.4%) and Two or More Races (4.4%).
Origin
Meaning and origin of Kosmidis
The surname Kosmidis has its origins in Greece, dating back to the 15th century. It is derived from the Greek word "kosmos," meaning "world" or "universe." The suffix "-idis" indicates a patronymic form, suggesting that the name originally referred to someone who was the son of a man named Kosmas.
The name is believed to have originated in the regions of Crete and the Peloponnese, where it was commonly found among Greek families. It is possible that the name was initially given to individuals who were scholars, philosophers, or had an interest in the study of the cosmos or the natural world.
One of the earliest recorded instances of the name Kosmidis can be found in the archives of the Orthodox Church in the village of Argyroupoli, Crete, dating back to the late 16th century. The name appears in several baptismal records from that period.
In the 17th century, a notable figure named Ioannis Kosmidis was a scholar and theologian who taught at the Patriarchal School in Constantinople (modern-day Istanbul). He was known for his contributions to the study of Greek philosophy and his writings on the nature of the universe.
During the Greek War of Independence (1821-1832), a military commander named Georgios Kosmidis played a significant role in the liberation of the Peloponnese region from Ottoman rule. He was recognized for his bravery and strategic leadership in several battles.
In the late 19th century, a prominent figure named Alexandros Kosmidis was a Greek lawyer and politician who served as a member of the Greek Parliament. He was instrumental in drafting several laws related to civil rights and judicial reforms.
Another notable individual with the surname Kosmidis was Nikolaos Kosmidis, a Greek artist and painter born in 1876 on the island of Samos. He was known for his landscapes and depictions of traditional Greek village life, and his works were widely exhibited throughout Greece and Europe during his lifetime.
The name Kosmidis has maintained its presence in Greece and among Greek communities around the world, although it is not among the most common surnames in the country today.
Demographics
Ancestry and ethnicity for Kosmidis
Among Census respondents with the surname Kosmidis, the largest self-reported group is White at 87.7%. The next largest groups are Hispanic (4.4%) and Two or More Races (4.4%).
The bar chart below shows how Kosmidis 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 Kosmidis surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.7% · 100
- Hispanic or Latino4.4% · 5
- Two or more races4.4% · 5
- Black or African American1.8% · 2
- Asian and Pacific Islander1.8% · 2
Timeline
Historical Census data for Kosmidis
Kosmidis appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#146,495
National surname rank
Recorded bearers 114
+5 bearers (+4.6%)
Per 100,000 0.04
Rank movement Up 3,957 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #150,452 | 109 | 0.04 | First available Census row | First available Census row |
| 2020 | #146,495 | 114 | 0.04 | +5 bearers (+4.6%) | Up 3,957 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 Kosmidis 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 | #150,452 | #146,495 | 2.6% |
| Count | 109 | 114 | 4.6% |
| Per 100K | 0.04 | 0.04 | -4.6% |
Between the 2010 and 2020 Census, the number of Kosmidis bearers went from 109 to 114 (+4.6% change). The surname moved up 3,957 positions in the national ranking, going from #150,452 to #146,495.
FAQ
Kosmidis surname: questions and answers
How many people in the U.S. have the surname Kosmidis?
Name Census estimates that about 131 living Americans carry the surname Kosmidis. Using the current population baseline, that works out to roughly 1 in 2,616,445 residents.
How common is Kosmidis?
Kosmidis 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 Kosmidis. 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 Kosmidis.
Has Kosmidis become more or less common over time?
Between 2010 and 2020, the surname Kosmidis went from 109 recorded bearers to 114. That is an increase of 5 (+4.6%). In the national ranking it rose from #150,452 to #146,495.
What does the Census say about the background of Kosmidis?
Among Census respondents with the surname Kosmidis, the largest self-reported group is White at 87.7%. The next largest groups are Hispanic (4.4%) and Two or More Races (4.4%). 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 Kosmidis in the 2020 Census, accounting for 87.7% (100 people in the source table).
What is the full ancestry breakdown?
Kosmidis appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.7%), Hispanic (4.4%), Two or More Races (4.4%). 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 Kosmidis (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 Kosmidis mean?
A Greek surname derived from the Greek word "kosmos" meaning world or universe, possibly referring to a person's global outlook or worldliness. 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 Kosmidis (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 Kosmidis?
Our sister site HowManyOfMe.org answers how many Americans have the surname Kosmidis at a glance, with the living-bearer count up front.