2000
#128,797
National surname rank
Recorded bearers 122
First available Census row
Per 100,000 0.05
Very Rare Last name
Manaugh
Of Irish origin, a variant of Monaghan, meaning "descendant of the people of the fertile plain or meadow".
According to the 2020 US Census Bureau surname tables, roughly 115 Americans carry the last name Manaugh. That puts it at #155,682 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,980,473 residents).
This page is the full Name Census profile for the Manaugh 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
115
1 in 2,980,473
Census rank
#155,682
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
100
very rare in the US
Popularity narrative
The Census Bureau recorded 100 bearers of the surname Manaugh in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155682nd position in the national surname ranking.
Among Census respondents with the surname Manaugh, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (5.0%) and Two or More Races (2.0%).
Origin
Meaning and origin of Manaugh
The surname Manaugh originated in the Irish region of Ulster, specifically in the county of Donegal. It is an anglicized form of the old Irish Gaelic name "O'Monacháin," which means "descendant of the monk." The name dates back to medieval times, around the 12th or 13th century.
In ancient Irish records, the name was often spelled as "O'Monaghan" or "O'Monahan." These variations are due to the translation of the name from the Irish Gaelic language to English. The name is believed to have been derived from the Irish word "manach," meaning "monk."
One of the earliest recorded instances of the name Manaugh can be found in the Annals of the Four Masters, a chronicle of medieval Irish history compiled in the 17th century. The annals mention a notable figure named Diarmaid O'Monachan, who was the Chief of Tir-Conaill (Donegal) in the year 1242.
During the 16th and 17th centuries, the Manaugh surname was prominent in the region of Trough, County Monaghan, where they were lords of the territory. Notably, Aodh O'Manachan was the last chieftain of Trough before the arrival of English settlers in the area.
In the 18th century, a notable bearer of the Manaugh name was Reverend Patrick Manaugh, who was born in County Donegal in 1724. He was a Catholic priest and a prominent figure in the Irish Catholic community during the period of the Penal Laws.
Another historical figure with the Manaugh surname was John Manaugh, born in County Monaghan in 1810. He was a successful businessman and landowner in the mid-19th century, and his family estate was located in the town of Carrickmacross.
In the late 19th century, a prominent member of the Manaugh family was Margaret Manaugh, born in 1865 in County Donegal. She was a renowned Irish language scholar and played a crucial role in preserving and promoting the Irish language and culture.
While the Manaugh surname has its roots in Ireland, it has since spread to other parts of the world due to emigration. However, its origins can be traced back to the ancient Irish name "O'Monacháin," reflecting the family's historical connection to the monastic tradition in Ireland.
Demographics
Ancestry and ethnicity for Manaugh
Among Census respondents with the surname Manaugh, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (5.0%) and Two or More Races (2.0%).
The bar chart below shows how Manaugh 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 Manaugh surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.0% · 91
- Hispanic or Latino5.0% · 5
- Two or more races2.0% · 2
- Black or African American1.0% · 1
- American Indian and Alaska Native1.0% · 1
Timeline
Historical Census data for Manaugh
Manaugh 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
#152,628
National surname rank
Recorded bearers 107
-15 bearers (-12.3%)
Per 100,000 0.04
Rank movement Down 23,831 places
2020
#155,682
National surname rank
Recorded bearers 100
-7 bearers (-6.5%)
Per 100,000 0.03
Rank movement Down 3,054 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #128,797 | 122 | 0.05 | First available Census row | First available Census row |
| 2010 | #152,628 | 107 | 0.04 | -15 bearers (-12.3%) | Down 23,831 places |
| 2020 | #155,682 | 100 | 0.03 | -7 bearers (-6.5%) | Down 3,054 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 Manaugh 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 | #152,628 | #155,682 | -2.0% |
| Count | 107 | 100 | -6.5% |
| Per 100K | 0.04 | 0.03 | -16.4% |
Between the 2010 and 2020 Census, the number of Manaugh bearers went from 107 to 100 (-6.5% change). The surname moved down 3,054 positions in the national ranking, going from #152,628 to #155,682.
FAQ
Manaugh surname: questions and answers
How many people in the U.S. have the surname Manaugh?
Name Census estimates that about 115 living Americans carry the surname Manaugh. Using the current population baseline, that works out to roughly 1 in 2,980,473 residents.
How common is Manaugh?
Manaugh ranks #155,682 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 100 people with the surname Manaugh. That is different from the site's living-bearer estimate (115), 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 Manaugh.
Has Manaugh become more or less common over time?
Between 2010 and 2020, the surname Manaugh went from 107 recorded bearers to 100. That is a decrease of 7 (-6.5%). In the national ranking it fell from #152,628 to #155,682.
What does the Census say about the background of Manaugh?
Among Census respondents with the surname Manaugh, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (5.0%) and Two or More Races (2.0%). 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 Manaugh in the 2020 Census, accounting for 91.0% (91 people in the source table).
What is the full ancestry breakdown?
Manaugh appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.0%), Hispanic (5.0%), Two or More Races (2.0%). 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 Manaugh (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 Manaugh mean?
Of Irish origin, a variant of Monaghan, meaning "descendant of the people of the fertile plain or meadow". 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 Manaugh (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 many people have the last name Manaugh?
See how many people have the last name Manaugh on HowManyOfMe.org, our sister site built around that single question.