2000
#148,244
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.04
Very Rare Last name
Marosy
A surname of Hungarian origin meaning "marshy" or "swampy".
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Marosy. 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 Marosy 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 Marosy 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 Marosy, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (6.1%).
Origin
Meaning and origin of Marosy
The surname Marosy is of Hungarian origin, with its earliest known roots dating back to the 13th century. The name is believed to have derived from the Old Hungarian word "maros," which referred to a river or stream. It is likely that the name was initially given to individuals who lived near the Maros River, which flows through present-day Hungary, Romania, and Serbia.
One of the earliest recorded instances of the Marosy name can be found in a 14th-century manuscript from the region of Transylvania, which was then part of the Kingdom of Hungary. The document mentions a landowner named Marosy Janos, who owned several estates along the banks of the Maros River.
During the 15th century, the Marosy family became prominent in the town of Szeged, located in southern Hungary. Several members of the family held influential positions in the local administration and were involved in the town's trade and commerce. One notable figure was Marosy Istvan, a successful merchant who served as the mayor of Szeged in the late 15th century.
As the Marosy name spread throughout Hungary, it also began to appear in various historical records and documents. For instance, in the 16th century, a military officer named Marosy Mihaly was mentioned in chronicles detailing the Ottoman-Hungarian Wars, where he fought bravely against the invading Ottoman forces.
The 17th century saw the rise of another prominent Marosy, Marosy Gabor, who was a renowned scholar and philosopher. He was born in 1635 in the town of Debrecen and made significant contributions to the fields of theology and education during his lifetime.
In the 19th century, the Marosy name gained further recognition with the birth of Marosy Karoly, a celebrated painter and artist. Born in 1825 in Budapest, Marosy Karoly's works were highly acclaimed, and his paintings are still displayed in several prominent museums and galleries throughout Hungary.
Throughout its long history, the surname Marosy has been associated with various notable individuals from different walks of life, including writers, politicians, scientists, and artists. While the name may have evolved in spelling and pronunciation over the centuries, its Hungarian roots and connection to the Maros River remain a significant part of its rich heritage.
Demographics
Ancestry and ethnicity for Marosy
Among Census respondents with the surname Marosy, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (6.1%).
The bar chart below shows how Marosy 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 Marosy surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.9% · 108
- Hispanic or Latino6.1% · 7
Timeline
Historical Census data for Marosy
Marosy 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
#158,432
National surname rank
Recorded bearers 102
+0 bearers (+0.0%)
Per 100,000 0.03
Rank movement Down 10,188 places
2020
#145,757
National surname rank
Recorded bearers 115
+13 bearers (+12.7%)
Per 100,000 0.04
Rank movement Up 12,675 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #148,244 | 102 | 0.04 | First available Census row | First available Census row |
| 2010 | #158,432 | 102 | 0.03 | +0 bearers (+0.0%) | Down 10,188 places |
| 2020 | #145,757 | 115 | 0.04 | +13 bearers (+12.7%) | Up 12,675 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 Marosy 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 | #158,432 | #145,757 | 8.0% |
| Count | 102 | 115 | 12.7% |
| Per 100K | 0.03 | 0.04 | 28.2% |
Between the 2010 and 2020 Census, the number of Marosy bearers went from 102 to 115 (+12.7% change). The surname moved up 12,675 positions in the national ranking, going from #158,432 to #145,757.
FAQ
Marosy surname: questions and answers
How many people in the U.S. have the surname Marosy?
Name Census estimates that about 132 living Americans carry the surname Marosy. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Marosy?
Marosy 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 Marosy. 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 Marosy.
Has Marosy become more or less common over time?
Between 2010 and 2020, the surname Marosy went from 102 recorded bearers to 115. That is an increase of 13 (+12.7%). In the national ranking it rose from #158,432 to #145,757.
What does the Census say about the background of Marosy?
Among Census respondents with the surname Marosy, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (6.1%). 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 Marosy in the 2020 Census, accounting for 93.9% (108 people in the source table).
What is the full ancestry breakdown?
Marosy appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.9%), Hispanic (6.1%). 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 Marosy (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 Marosy mean?
A surname of Hungarian origin meaning "marshy" or "swampy". 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 Marosy (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 Marosy?
Find out how many people have the last name Marosy on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.