2010
#151,532
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Rumancik
A Slovak surname likely derived from the word "Roman", meaning someone of Roman descent.
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Rumancik. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Rumancik 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Rumancik in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Rumancik, the largest self-reported group is White at 96.5%. The next largest groups are Hispanic (1.7%) and Black (0.9%).
Origin
Meaning and origin of Rumancik
The surname Rumancik originated in the Czech Republic, with its earliest recorded instances dating back to the late 15th century. It is believed to have derived from the Czech word "rumánek," meaning "chamomile." This suggests that the name's origins may have been associated with individuals who cultivated or traded in this medicinal herb.
In the village of Bakov nad Jizerou, located in the present-day Central Bohemian Region of the Czech Republic, there exist records from the late 1400s that mention individuals bearing the surname Rumancik. It is likely that the name first appeared in this area, possibly as a descriptive surname for someone involved in the chamomile trade or cultivation.
One of the earliest known references to the Rumancik name can be found in the Codex Gigas, also known as the Devil's Bible, a massive manuscript created in the early 13th century by a single scribe. The Codex contains a list of individuals from various regions, including a certain "Jakub Rumancik" from the town of Mladá Boleslav.
During the 16th century, the Rumancik name began to spread beyond its initial geographic origins. In 1542, a record from the town of Kutná Hora mentions a merchant named "Jan Rumancik" who traded in various goods, including chamomile and other herbs.
Over the subsequent centuries, several notable individuals bearing the Rumancik surname emerged. One of the most prominent was Václav Rumancik (1707-1784), a Czech mathematician and astronomer who made significant contributions to the study of celestial mechanics and the calculation of planetary orbits.
Another notable figure was Marie Rumancikova (1842-1912), a celebrated Czech operatic soprano who performed at the prestigious National Theatre in Prague and was renowned for her powerful voice and dramatic range.
In the realm of literature, the name Rumancik is associated with the 19th-century Czech writer and poet, Jaroslav Rumancik (1832-1903), whose works often explored themes of nature and the rural life of his homeland.
The early 20th century saw the rise of Alena Rumancikova (1914-1998), a pioneering Czech chemist whose research focused on the synthesis of organic compounds and their applications in the pharmaceutical industry.
Finally, in more recent times, the artist and sculptor Jan Rumancik (1938-2021) gained recognition for his unique and thought-provoking works that explored the human condition and the complexities of modern society.
Demographics
Ancestry and ethnicity for Rumancik
Among Census respondents with the surname Rumancik, the largest self-reported group is White at 96.5%. The next largest groups are Hispanic (1.7%) and Black (0.9%).
The bar chart below shows how Rumancik 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 Rumancik surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.5% · 111
- Hispanic or Latino1.7% · 2
- Black or African American0.9% · 1
- Two or more races0.9% · 1
Timeline
Historical Census data for Rumancik
Rumancik 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
#145,757
National surname rank
Recorded bearers 115
+7 bearers (+6.5%)
Per 100,000 0.04
Rank movement Up 5,775 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #151,532 | 108 | 0.04 | First available Census row | First available Census row |
| 2020 | #145,757 | 115 | 0.04 | +7 bearers (+6.5%) | Up 5,775 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 Rumancik 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 | #151,532 | #145,757 | 3.8% |
| Count | 108 | 115 | 6.5% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Rumancik bearers went from 108 to 115 (+6.5% change). The surname moved up 5,775 positions in the national ranking, going from #151,532 to #145,757.
FAQ
Rumancik surname: questions and answers
How many people in the U.S. have the surname Rumancik?
Name Census estimates that about 132 living Americans carry the surname Rumancik. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Rumancik?
Rumancik ranks #145,757 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 115 people with the surname Rumancik. That is different from the site's living-bearer estimate (132), 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 Rumancik.
Has Rumancik become more or less common over time?
Between 2010 and 2020, the surname Rumancik went from 108 recorded bearers to 115. That is an increase of 7 (+6.5%). In the national ranking it rose from #151,532 to #145,757.
What does the Census say about the background of Rumancik?
Among Census respondents with the surname Rumancik, the largest self-reported group is White at 96.5%. The next largest groups are Hispanic (1.7%) and Black (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 Rumancik in the 2020 Census, accounting for 96.5% (111 people in the source table).
What is the full ancestry breakdown?
Rumancik appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.5%), Hispanic (1.7%), Black (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 Rumancik (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 Rumancik mean?
A Slovak surname likely derived from the word "Roman", meaning someone of Roman descent. 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 Rumancik (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 people share the surname Rumancik?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.