2000
#6,101
National surname rank
Recorded bearers 5,185
First available Census row
Per 100,000 1.92
Rare Last name
Monday
A surname likely derived from the Old English word "mōnandæg," referring to someone born or baptized on a Monday.
According to the 2020 US Census Bureau surname tables, roughly 5,533 Americans carry the last name Monday. That puts it at #6,720 in the national surname ranking, appearing at a frequency of 1.61 per 100,000 people (about 1 in 61,947 residents).
This page is the full Name Census profile for the Monday 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 Monday with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
5.5K
1 in 61,947
Census rank
#6,720
2020 decennial data
Per 100,000
1.6
Frequency rate
Recorded bearers
4.8K
rare in the US
Popularity narrative
The Census Bureau recorded 4,825 bearers of the surname Monday in its 2020 decennial surname file. At a rate of 1.61 per 100,000 residents, it holds the 6720th position in the national surname ranking.
Among Census respondents with the surname Monday, the largest self-reported group is White at 78.2%. The next largest groups are Black (12.4%) and Two or More Races (4.3%).
Origin
Meaning and origin of Monday
The surname MONDAY is believed to have originated in England, tracing its roots back to the medieval period. It is derived from the Old English word "monandæg," which literally translates to "day of the moon." This name likely arose as a descriptive nickname or occupational name for someone who worked on Mondays or had a particular association with that day of the week.
One of the earliest recorded instances of the MONDAY surname can be found in the Hundred Rolls of Gloucestershire, a census-like record from the late 13th century. Here, the name is listed as "Mundai," which is a phonetic spelling of the Old English "monandæg."
During the 14th century, the MONDAY surname began appearing more frequently in various documents and records across England. In the Subsidy Rolls of Worcestershire from 1327, a certain William Moneday is mentioned, while the Poll Tax returns of Yorkshire from 1379 list a John Moneday.
The MONDAY name has also been linked to various place names throughout England. For instance, the village of Munday in Hertfordshire is said to have derived its name from the Old English "mona" (moon) and "dæg" (day), potentially sharing a common linguistic origin with the surname.
Notable historical figures who bore the MONDAY surname include:
1. Sir John Monday (c. 1545-1608), an English Member of Parliament and landowner from Worcestershire.
2. William Monday (c. 1570-1642), an English clergyman and academic who served as the Provost of Eton College.
3. Thomas Monday (c. 1620-1681), an English lawyer and author of legal treatises during the 17th century.
4. Elizabeth Monday (c. 1655-1720), a renowned English midwife who published one of the earliest books on midwifery in English.
5. James Monday (c. 1785-1859), a British naval officer who served during the Napoleonic Wars and later became a successful merchant and shipowner.
Over time, the MONDAY surname has undergone various spelling variations, including Moneday, Munday, Mundaye, and Monndaye, reflecting the evolving nature of English orthography and regional dialects. However, the core meaning and origin of the name have remained rooted in its connection to the first day of the week and its linguistic ties to the Old English language.
Demographics
Ancestry and ethnicity for Monday
Among Census respondents with the surname Monday, the largest self-reported group is White at 78.2%. The next largest groups are Black (12.4%) and Two or More Races (4.3%).
The bar chart below shows how Monday 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 Monday surname at the time of the 2020 Census, not any inherent property of the name itself.
- White78.2% · 3,775
- Black or African American12.4% · 600
- Two or more races4.3% · 207
- Hispanic or Latino3.3% · 161
- Asian and Pacific Islander0.9% · 44
- American Indian and Alaska Native0.8% · 38
Timeline
Historical Census data for Monday
Monday 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
#6,336
National surname rank
Recorded bearers 5,379
+194 bearers (+3.7%)
Per 100,000 1.82
Rank movement Down 235 places
2020
#6,720
National surname rank
Recorded bearers 4,825
-554 bearers (-10.3%)
Per 100,000 1.61
Rank movement Down 384 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #6,101 | 5,185 | 1.92 | First available Census row | First available Census row |
| 2010 | #6,336 | 5,379 | 1.82 | +194 bearers (+3.7%) | Down 235 places |
| 2020 | #6,720 | 4,825 | 1.61 | -554 bearers (-10.3%) | Down 384 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 Monday 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 | #6,336 | #6,720 | -6.1% |
| Count | 5,379 | 4,825 | -10.3% |
| Per 100K | 1.82 | 1.61 | -11.3% |
Between the 2010 and 2020 Census, the number of Monday bearers went from 5,379 to 4,825 (-10.3% change). The surname moved down 384 positions in the national ranking, going from #6,336 to #6,720.
FAQ
Monday surname: questions and answers
How many people in the U.S. have the surname Monday?
Name Census estimates that about 5,533 living Americans carry the surname Monday. Using the current population baseline, that works out to roughly 1 in 61,947 residents.
How common is Monday?
Monday ranks #6,720 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.61 per 100,000 residents, which is about 2 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 4,825 people with the surname Monday. That is different from the site's living-bearer estimate (5,533), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.61 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.61 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 2 of them to have the surname Monday.
Has Monday become more or less common over time?
Between 2010 and 2020, the surname Monday went from 5,379 recorded bearers to 4,825. That is a decrease of 554 (-10.3%). In the national ranking it fell from #6,336 to #6,720.
What does the Census say about the background of Monday?
Among Census respondents with the surname Monday, the largest self-reported group is White at 78.2%. The next largest groups are Black (12.4%) and Two or More Races (4.3%). 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 Monday in the 2020 Census, accounting for 78.2% (3,775 people in the source table).
What is the full ancestry breakdown?
Monday appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (78.2%), Black (12.4%), Two or More Races (4.3%). 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 Monday (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 Monday mean?
A surname likely derived from the Old English word "mōnandæg," referring to someone born or baptized on a 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 Monday (1.61 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 Monday?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.