2000
#11,310
National surname rank
Recorded bearers 2,563
First available Census row
Per 100,000 0.95
Rare Last name
Maddock
Derived from the Welsh given name "Madog," meaning "fortunate" or "good."
According to the 2020 US Census Bureau surname tables, roughly 2,756 Americans carry the last name Maddock. That puts it at #12,345 in the national surname ranking, appearing at a frequency of 0.80 per 100,000 people (about 1 in 124,367 residents).
This page is the full Name Census profile for the Maddock 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 Maddock with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
2.8K
1 in 124,367
Census rank
#12,345
2020 decennial data
Per 100,000
0.8
Frequency rate
Recorded bearers
2.4K
rare in the US
Popularity narrative
The Census Bureau recorded 2,403 bearers of the surname Maddock in its 2020 decennial surname file. At a rate of 0.80 per 100,000 residents, it holds the 12345th position in the national surname ranking.
Among Census respondents with the surname Maddock, the largest self-reported group is White at 91.9%. The next largest groups are Hispanic (3.5%) and Two or More Races (2.8%).
Origin
Meaning and origin of Maddock
The surname Maddock has its origins in England, with records dating back to the late 12th century. The name is believed to have derived from the Old English words "mad" or "mæd," meaning meadow, and "ac" or "oc," meaning oak, suggesting that the original bearers of the name lived near a meadow with oak trees.
One of the earliest recorded instances of the name Maddock can be found in the Curia Regis Rolls of 1196, where a person named William Maddock is mentioned. The Hundred Rolls of 1273 also reference a John de Maddok in Oxfordshire.
In the 14th century, variations of the name appeared in various records, including Maddok, Maddocke, and Maddoke. These variations likely resulted from the different regional dialects and spellings used at the time.
The Maddock surname has been associated with several place names throughout history. For instance, the village of Maddock in Shropshire, England, was mentioned in the Domesday Book of 1086 as "Madoc." This suggests that the surname may have originated from this location or that the place name derived from an early bearer of the surname.
Notable individuals with the surname Maddock include:
1. John Maddock (1545-1615), an English clergyman and theologian who served as the rector of Cheam, Surrey.
2. Sir Thomas Maddock (1617-1689), an English lawyer and politician who served as Lord Mayor of London in 1672.
3. Henry Maddock (1660-1735), a British naval officer who served as Lieutenant Governor of Placentia, Newfoundland, from 1727 to 1735.
4. Harriet Maddock (1816-1891), an English author and playwright known for her works on education and women's rights.
5. Sir Wilfred Maddock (1886-1952), a British civil engineer and construction executive who played a crucial role in the development of hydroelectric power in Canada.
The Maddock surname has a rich history spanning centuries, with its origins rooted in the rural landscapes of England and connections to various historical records and locations.
Demographics
Ancestry and ethnicity for Maddock
Among Census respondents with the surname Maddock, the largest self-reported group is White at 91.9%. The next largest groups are Hispanic (3.5%) and Two or More Races (2.8%).
The bar chart below shows how Maddock 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 Maddock surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.9% · 2,208
- Hispanic or Latino3.5% · 85
- Two or more races2.8% · 68
- Asian and Pacific Islander0.9% · 21
- Black or African American0.8% · 20
- American Indian and Alaska Native0.0% · 1
Timeline
Historical Census data for Maddock
Maddock 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
#12,108
National surname rank
Recorded bearers 2,574
+11 bearers (+0.4%)
Per 100,000 0.87
Rank movement Down 798 places
2020
#12,345
National surname rank
Recorded bearers 2,403
-171 bearers (-6.6%)
Per 100,000 0.80
Rank movement Down 237 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #11,310 | 2,563 | 0.95 | First available Census row | First available Census row |
| 2010 | #12,108 | 2,574 | 0.87 | +11 bearers (+0.4%) | Down 798 places |
| 2020 | #12,345 | 2,403 | 0.80 | -171 bearers (-6.6%) | Down 237 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 Maddock 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 | #12,108 | #12,345 | -2.0% |
| Count | 2,574 | 2,403 | -6.6% |
| Per 100K | 0.87 | 0.80 | -7.6% |
Between the 2010 and 2020 Census, the number of Maddock bearers went from 2,574 to 2,403 (-6.6% change). The surname moved down 237 positions in the national ranking, going from #12,108 to #12,345.
FAQ
Maddock surname: questions and answers
How many people in the U.S. have the surname Maddock?
Name Census estimates that about 2,756 living Americans carry the surname Maddock. Using the current population baseline, that works out to roughly 1 in 124,367 residents.
How common is Maddock?
Maddock ranks #12,345 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.80 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 2,403 people with the surname Maddock. That is different from the site's living-bearer estimate (2,756), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.8 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.80 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 Maddock.
Has Maddock become more or less common over time?
Between 2010 and 2020, the surname Maddock went from 2,574 recorded bearers to 2,403. That is a decrease of 171 (-6.6%). In the national ranking it fell from #12,108 to #12,345.
What does the Census say about the background of Maddock?
Among Census respondents with the surname Maddock, the largest self-reported group is White at 91.9%. The next largest groups are Hispanic (3.5%) and Two or More Races (2.8%). 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 Maddock in the 2020 Census, accounting for 91.9% (2,208 people in the source table).
What is the full ancestry breakdown?
Maddock appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.9%), Hispanic (3.5%), Two or More Races (2.8%). 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 Maddock (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 Maddock mean?
Derived from the Welsh given name "Madog," meaning "fortunate" or "good." 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 Maddock (0.80 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 Maddock?
Find out how many Americans have the surname Maddock on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.