2000
#126,400
National surname rank
Recorded bearers 125
First available Census row
Per 100,000 0.05
Very Rare Last name
Jirkovsky
A locational surname meaning "from Jirkov" or "from Jirikov", towns in the Czech Republic.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Jirkovsky. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Jirkovsky 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Jirkovsky in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Jirkovsky, the largest self-reported group is White at 95.4%. The next largest groups are Two or More Races (3.7%) and Hispanic (0.9%).
Origin
Meaning and origin of Jirkovsky
The surname Jirkovsky originates from the Czech Republic, with its earliest known roots dating back to the 12th century. It is believed to have evolved from the Old Czech word "jirka," which referred to a person with a small, delicate physique. This nickname was often given to individuals who were slender or petite in stature.
The name Jirkovsky is derived from the combination of "jirka" and the possessive suffix "-ovsky," which was commonly used in Czech surnames to indicate ownership or affiliation. This formation suggests that the original bearer of the name may have been associated with a place or person named Jirka.
One of the earliest recorded instances of the name Jirkovsky can be found in the Codex Diplomaticus et Epistolaris Regni Bohemiae, a collection of medieval documents from the Kingdom of Bohemia, dating back to the 13th century. This codex contains references to individuals bearing the surname Jirkovsky, indicating its widespread use during that period.
In the 14th century, the name Jirkovsky appeared in the Liber Vetustissimus Archidiaconatus Pragensis, an ancient register of the Archdiocese of Prague. This record provided valuable insights into the geographical distribution of the name, suggesting that it was particularly prevalent in the regions surrounding Prague and central Bohemia.
Among the notable historical figures bearing the surname Jirkovsky is Jan Jirkovsky (1550-1621), a renowned Czech painter and engraver who gained recognition for his religious and allegorical works during the Renaissance period. Another notable bearer of the name was Vaclav Jirkovsky (1680-1745), a Baroque architect who played a significant role in the design and construction of several churches and monasteries in Bohemia.
In the 19th century, the name Jirkovsky gained further prominence with the birth of Karel Jirkovsky (1822-1888), a Czech writer, journalist, and political activist who advocated for Czech national rights and cultural preservation during the era of Austrian rule.
Another notable figure was Alois Jirkovsky (1857-1925), a Czech linguist and lexicographer who made significant contributions to the study and documentation of the Czech language. His work on compiling dictionaries and analyzing the etymology of Czech words was highly regarded in academic circles.
Lastly, the 20th century saw the rise of Rudolf Jirkovsky (1901-1977), a prominent Czech geologist and paleontologist who made groundbreaking discoveries in the field of paleontology and contributed to the understanding of the geological history of the Czech lands.
Demographics
Ancestry and ethnicity for Jirkovsky
Among Census respondents with the surname Jirkovsky, the largest self-reported group is White at 95.4%. The next largest groups are Two or More Races (3.7%) and Hispanic (0.9%).
The bar chart below shows how Jirkovsky 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 Jirkovsky surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.4% · 104
- Two or more races3.7% · 4
- Hispanic or Latino0.9% · 1
Timeline
Historical Census data for Jirkovsky
Jirkovsky 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
#133,863
National surname rank
Recorded bearers 126
+1 bearers (+0.8%)
Per 100,000 0.04
Rank movement Down 7,463 places
2020
#150,205
National surname rank
Recorded bearers 109
-17 bearers (-13.5%)
Per 100,000 0.04
Rank movement Down 16,342 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #126,400 | 125 | 0.05 | First available Census row | First available Census row |
| 2010 | #133,863 | 126 | 0.04 | +1 bearers (+0.8%) | Down 7,463 places |
| 2020 | #150,205 | 109 | 0.04 | -17 bearers (-13.5%) | Down 16,342 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 Jirkovsky 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 | #133,863 | #150,205 | -12.2% |
| Count | 126 | 109 | -13.5% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Jirkovsky bearers went from 126 to 109 (-13.5% change). The surname moved down 16,342 positions in the national ranking, going from #133,863 to #150,205.
FAQ
Jirkovsky surname: questions and answers
How many people in the U.S. have the surname Jirkovsky?
Name Census estimates that about 125 living Americans carry the surname Jirkovsky. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Jirkovsky?
Jirkovsky ranks #150,205 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 109 people with the surname Jirkovsky. That is different from the site's living-bearer estimate (125), 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 Jirkovsky.
Has Jirkovsky become more or less common over time?
Between 2010 and 2020, the surname Jirkovsky went from 126 recorded bearers to 109. That is a decrease of 17 (-13.5%). In the national ranking it fell from #133,863 to #150,205.
What does the Census say about the background of Jirkovsky?
Among Census respondents with the surname Jirkovsky, the largest self-reported group is White at 95.4%. The next largest groups are Two or More Races (3.7%) and Hispanic (0.9%). 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 Jirkovsky in the 2020 Census, accounting for 95.4% (104 people in the source table).
What is the full ancestry breakdown?
Jirkovsky appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.4%), Two or More Races (3.7%), Hispanic (0.9%). 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 Jirkovsky (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 Jirkovsky mean?
A locational surname meaning "from Jirkov" or "from Jirikov", towns in the Czech Republic. 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 Jirkovsky (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 Americans have the surname Jirkovsky?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.