2000
#134,037
National surname rank
Recorded bearers 116
First available Census row
Per 100,000 0.04
Very Rare Last name
Mcmanmon
A Scottish surname derived from the Gaelic "Mac Naomhóg" meaning "son of the little saint".
According to the 2020 US Census Bureau surname tables, roughly 120 Americans carry the last name Mcmanmon. That puts it at #152,989 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,856,286 residents).
This page is the full Name Census profile for the Mcmanmon 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
120
1 in 2,856,286
Census rank
#152,989
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
105
very rare in the US
Popularity narrative
The Census Bureau recorded 105 bearers of the surname Mcmanmon in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152989th position in the national surname ranking.
Among Census respondents with the surname Mcmanmon, the largest self-reported group is White at 94.3%. The next largest groups are Black (3.8%) and Hispanic (1.0%).
Origin
Meaning and origin of Mcmanmon
The surname MCMANMON has its origins tracing back to Ireland in the 16th century. It is thought to be an anglicized form of the Gaelic name Mac Manmáin, which translates to "son of the monk." This suggests that the name may have been associated with an early Irish family that had connections to a monastery or religious order.
The earliest recorded reference to the name MCMANMON can be found in the Annals of the Four Masters, a chronicle of medieval Irish history compiled in the 17th century. The annals mention an individual named Niall Mac Manmáin, who lived in County Donegal in the late 16th century.
In the 17th century, the name appears in various records and documents from the County Monaghan area, where it is believed the MCMANMON family had established roots. One notable individual from this time period was Patrick MCMANMON, a landowner and military leader who fought against the English forces during the Irish Confederate Wars of the 1640s.
As the MCMANMON family spread across Ireland, variations in spelling arose, including MCMANAMAN, MCMANAMIN, and MCMANAMANN. These variants can be found in historical records from counties such as Armagh, Tyrone, and Fermanagh.
One of the earliest known instances of the MCMANMON name appearing outside of Ireland was in the late 18th century, when a man named John MCMANMON emigrated from County Monaghan to America, settling in Pennsylvania. He later served in the American Revolutionary War.
Another notable figure was Michael MCMANMON, born in County Monaghan in the early 19th century. He was a prominent Irish scholar and historian who wrote extensively on the history and folklore of the region.
In the 20th century, Patrick MCMANMON, born in 1902 in County Armagh, gained recognition as a successful businessman and philanthropist, contributing significantly to educational and charitable initiatives in Ireland.
Overall, the surname MCMANMON has a rich history deeply rooted in Irish heritage, with various bearers of the name leaving their mark across different eras and regions.
Demographics
Ancestry and ethnicity for Mcmanmon
Among Census respondents with the surname Mcmanmon, the largest self-reported group is White at 94.3%. The next largest groups are Black (3.8%) and Hispanic (1.0%).
The bar chart below shows how Mcmanmon 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 Mcmanmon surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.3% · 99
- Black or African American3.8% · 4
- Hispanic or Latino1.0% · 1
- Two or more races1.0% · 1
Timeline
Historical Census data for Mcmanmon
Mcmanmon 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
#144,141
National surname rank
Recorded bearers 115
-1 bearers (-0.9%)
Per 100,000 0.04
Rank movement Down 10,104 places
2020
#152,989
National surname rank
Recorded bearers 105
-10 bearers (-8.7%)
Per 100,000 0.04
Rank movement Down 8,848 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #134,037 | 116 | 0.04 | First available Census row | First available Census row |
| 2010 | #144,141 | 115 | 0.04 | -1 bearers (-0.9%) | Down 10,104 places |
| 2020 | #152,989 | 105 | 0.04 | -10 bearers (-8.7%) | Down 8,848 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 Mcmanmon 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 | #144,141 | #152,989 | -6.1% |
| Count | 115 | 105 | -8.7% |
| Per 100K | 0.04 | 0.04 | -12.2% |
Between the 2010 and 2020 Census, the number of Mcmanmon bearers went from 115 to 105 (-8.7% change). The surname moved down 8,848 positions in the national ranking, going from #144,141 to #152,989.
FAQ
Mcmanmon surname: questions and answers
How many people in the U.S. have the surname Mcmanmon?
Name Census estimates that about 120 living Americans carry the surname Mcmanmon. Using the current population baseline, that works out to roughly 1 in 2,856,286 residents.
How common is Mcmanmon?
Mcmanmon ranks #152,989 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 105 people with the surname Mcmanmon. That is different from the site's living-bearer estimate (120), 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 Mcmanmon.
Has Mcmanmon become more or less common over time?
Between 2010 and 2020, the surname Mcmanmon went from 115 recorded bearers to 105. That is a decrease of 10 (-8.7%). In the national ranking it fell from #144,141 to #152,989.
What does the Census say about the background of Mcmanmon?
Among Census respondents with the surname Mcmanmon, the largest self-reported group is White at 94.3%. The next largest groups are Black (3.8%) and Hispanic (1.0%). 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 Mcmanmon in the 2020 Census, accounting for 94.3% (99 people in the source table).
What is the full ancestry breakdown?
Mcmanmon appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.3%), Black (3.8%), Hispanic (1.0%). 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 Mcmanmon (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 Mcmanmon mean?
A Scottish surname derived from the Gaelic "Mac Naomhóg" meaning "son of the little saint". 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 Mcmanmon (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 have the surname Mcmanmon?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.