2000
#9,989
National surname rank
Recorded bearers 2,978
First available Census row
Per 100,000 1.10
Rare Last name
Munday
Derived from the Old English "Munandæg," referring to someone born on a Monday or having a connection to Monday.
According to the 2020 US Census Bureau surname tables, roughly 3,375 Americans carry the last name Munday. That puts it at #10,423 in the national surname ranking, appearing at a frequency of 0.98 per 100,000 people (about 1 in 101,557 residents).
This page is the full Name Census profile for the Munday 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.
For British records, Name Census UK has a British surname profile for Munday with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
3.4K
1 in 101,557
Census rank
#10,423
2020 decennial data
Per 100,000
1.0
Frequency rate
Recorded bearers
2.9K
rare in the US
Popularity narrative
The Census Bureau recorded 2,943 bearers of the surname Munday in its 2020 decennial surname file. At a rate of 0.98 per 100,000 residents, it holds the 10423rd position in the national surname ranking.
Among Census respondents with the surname Munday, the largest self-reported group is White at 87.7%. The next largest groups are Black (3.4%) and Two or More Races (3.3%).
Origin
Meaning and origin of Munday
The surname MUNDAY is of English origin, derived from the Old English words "mūnan dæg," which translates to "day of the moon" or "Monday." It is believed to have originated as a nickname for someone born or baptized on a Monday.
One of the earliest recorded instances of the MUNDAY surname can be found in the Domesday Book of 1086, where it appears as "Munedai." This suggests that the name was already in use by the late 11th century in England.
During the Middle Ages, the MUNDAY name was primarily concentrated in the counties of Northamptonshire and Buckinghamshire, where it was often associated with various place names and localities. For instance, there are records of individuals named "de Munday" or "atte Munday" from villages like Chipping Warden and Brackley.
One notable bearer of the MUNDAY name was Sir John Munday (c. 1495-1537), a prominent English politician and landowner who served as Lord Mayor of London in 1536. Another was Anthony Munday (c. 1553-1633), an English playwright, poet, and writer who was a contemporary of Shakespeare.
In the 17th century, the MUNDAY surname gained prominence in the Americas, with several individuals bearing the name becoming early settlers in the British colonies. One such individual was Richard Munday (c. 1615-1667), who was among the first English settlers in Virginia and served as a member of the House of Burgesses.
Other historical figures with the MUNDAY surname include John Munday (1711-1767), an English clockmaker and inventor known for his development of the "striking train" mechanism in clocks, and William Munday (1790-1858), a British naval officer who served in the Royal Navy during the Napoleonic Wars.
Throughout its history, the MUNDAY surname has undergone various spelling variations, including Mundy, Mounday, and Moundy, reflecting the diverse regional dialects and linguistic influences of different areas of England.
Demographics
Ancestry and ethnicity for Munday
Among Census respondents with the surname Munday, the largest self-reported group is White at 87.7%. The next largest groups are Black (3.4%) and Two or More Races (3.3%).
The bar chart below shows how Munday 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 Munday surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.7% · 2,581
- Black or African American3.4% · 99
- Two or more races3.3% · 97
- Hispanic or Latino2.8% · 82
- Asian and Pacific Islander2.3% · 68
- American Indian and Alaska Native0.5% · 16
Timeline
Historical Census data for Munday
Munday 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
#10,857
National surname rank
Recorded bearers 2,934
-44 bearers (-1.5%)
Per 100,000 0.99
Rank movement Down 868 places
2020
#10,423
National surname rank
Recorded bearers 2,943
+9 bearers (+0.3%)
Per 100,000 0.98
Rank movement Up 434 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #9,989 | 2,978 | 1.10 | First available Census row | First available Census row |
| 2010 | #10,857 | 2,934 | 0.99 | -44 bearers (-1.5%) | Down 868 places |
| 2020 | #10,423 | 2,943 | 0.98 | +9 bearers (+0.3%) | Up 434 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 Munday 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 | #10,857 | #10,423 | 4.0% |
| Count | 2,934 | 2,943 | 0.3% |
| Per 100K | 0.99 | 0.98 | -0.5% |
Between the 2010 and 2020 Census, the number of Munday bearers went from 2,934 to 2,943 (+0.3% change). The surname moved up 434 positions in the national ranking, going from #10,857 to #10,423.
FAQ
Munday surname: questions and answers
How many people in the U.S. have the surname Munday?
Name Census estimates that about 3,375 living Americans carry the surname Munday. Using the current population baseline, that works out to roughly 1 in 101,557 residents.
How common is Munday?
Munday ranks #10,423 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.98 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,943 people with the surname Munday. That is different from the site's living-bearer estimate (3,375), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.98 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.98 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Munday.
Has Munday become more or less common over time?
Between 2010 and 2020, the surname Munday went from 2,934 recorded bearers to 2,943. That is an increase of 9 (+0.3%). In the national ranking it rose from #10,857 to #10,423.
What does the Census say about the background of Munday?
Among Census respondents with the surname Munday, the largest self-reported group is White at 87.7%. The next largest groups are Black (3.4%) and Two or More Races (3.3%). 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 Munday in the 2020 Census, accounting for 87.7% (2,581 people in the source table).
What is the full ancestry breakdown?
Munday appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.7%), Black (3.4%), Two or More Races (3.3%). 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 Munday (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 Munday mean?
Derived from the Old English "Munandæg," referring to someone born on a Monday or having a connection to Monday. 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 Munday (0.98 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 Munday?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.