2000
#92,217
National surname rank
Recorded bearers 185
First available Census row
Per 100,000 0.07
Very Rare Last name
Mcclamroch
A surname of uncertain origin, perhaps from a Scottish place name or dialect term.
According to the 2020 US Census Bureau surname tables, roughly 271 Americans carry the last name Mcclamroch. That puts it at #85,336 in the national surname ranking, appearing at a frequency of 0.08 per 100,000 people (about 1 in 1,264,776 residents).
This page is the full Name Census profile for the Mcclamroch 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
271
1 in 1,264,776
Census rank
#85,336
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
236
very rare in the US
Popularity narrative
The Census Bureau recorded 236 bearers of the surname Mcclamroch in its 2020 decennial surname file. At a rate of 0.08 per 100,000 residents, it holds the 85336th position in the national surname ranking.
Among Census respondents with the surname Mcclamroch, the largest self-reported group is White at 97.9%. The next largest groups are Hispanic (1.7%) and Two or More Races (0.4%).
Origin
Meaning and origin of Mcclamroch
The surname MCCLAMROCH has its origins in the Scottish Highlands, dating back to the 15th century. It is believed to be derived from the Gaelic words "mac" meaning "son of" and "clamhroch," which refers to a person with a hoarse or gruff voice. This could suggest that the name was initially a descriptive nickname given to an ancestor with a distinct vocal quality.
One of the earliest recorded instances of the name MCCLAMROCH can be found in the Ecclesiastical Records of Argyll and the Isles, where a certain Duncan MCCLAMROCH is mentioned in the year 1487. Another early reference appears in the Exchequer Rolls of Scotland from 1502, which lists a John MCCLAMROCH from the town of Inveraray.
In the 16th century, the MCCLAMROCH name was particularly concentrated in the areas around Loch Lomond and Loch Fyne, where several families bearing this surname were recorded in local parish registers and land records. One notable individual from this period was Angus MCCLAMROCH, a renowned bard and storyteller who lived in the village of Strathlachlan in the late 1500s.
During the 17th century, the MCCLAMROCH surname began to spread beyond its traditional Highland strongholds. In 1629, a James MCCLAMROCH was documented as a merchant in the city of Glasgow, while a Robert MCCLAMROCH served as a captain in the Scottish army during the Wars of the Three Kingdoms (1639-1651).
As the centuries progressed, various spelling variations of the name emerged, including MCCLAMROCK, MCCLAMROCH, and MCCLAMROCH. In the late 18th century, a notable bearer of the name was Archibald MCCLAMROCH (1737-1815), a prominent landowner and cattle breeder in Argyllshire.
Other individuals of historical significance who carried the MCCLAMROCH surname include:
1. Alasdair MCCLAMROCH (1802-1872), a renowned Gaelic poet and storyteller from the Isle of Islay.
2. Mary MCCLAMROCH (1845-1921), an early advocate for women's rights and education in Scotland.
3. Iain MCCLAMROCH (1876-1938), a respected historian and author who wrote extensively on the history and culture of the Scottish Highlands.
4. Angus MCCLAMROCH (1912-1987), a distinguished military officer who served in World War II and later became a respected author and playwright.
5. Flora MCCLAMROCH (1928-2001), a celebrated artist and sculptor whose works were widely exhibited throughout Scotland and the United Kingdom.
Demographics
Ancestry and ethnicity for Mcclamroch
Among Census respondents with the surname Mcclamroch, the largest self-reported group is White at 97.9%. The next largest groups are Hispanic (1.7%) and Two or More Races (0.4%).
The bar chart below shows how Mcclamroch 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 Mcclamroch surname at the time of the 2020 Census, not any inherent property of the name itself.
- White97.9% · 231
- Hispanic or Latino1.7% · 4
- Two or more races0.4% · 1
Timeline
Historical Census data for Mcclamroch
Mcclamroch 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
#91,625
National surname rank
Recorded bearers 201
+16 bearers (+8.6%)
Per 100,000 0.07
Rank movement Up 592 places
2020
#85,336
National surname rank
Recorded bearers 236
+35 bearers (+17.4%)
Per 100,000 0.08
Rank movement Up 6,289 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #92,217 | 185 | 0.07 | First available Census row | First available Census row |
| 2010 | #91,625 | 201 | 0.07 | +16 bearers (+8.6%) | Up 592 places |
| 2020 | #85,336 | 236 | 0.08 | +35 bearers (+17.4%) | Up 6,289 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 Mcclamroch 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 | #91,625 | #85,336 | 6.9% |
| Count | 201 | 236 | 17.4% |
| Per 100K | 0.07 | 0.08 | 12.8% |
Between the 2010 and 2020 Census, the number of Mcclamroch bearers went from 201 to 236 (+17.4% change). The surname moved up 6,289 positions in the national ranking, going from #91,625 to #85,336.
FAQ
Mcclamroch surname: questions and answers
How many people in the U.S. have the surname Mcclamroch?
Name Census estimates that about 271 living Americans carry the surname Mcclamroch. Using the current population baseline, that works out to roughly 1 in 1,264,776 residents.
How common is Mcclamroch?
Mcclamroch ranks #85,336 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.08 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 236 people with the surname Mcclamroch. That is different from the site's living-bearer estimate (271), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.08 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.08 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 Mcclamroch.
Has Mcclamroch become more or less common over time?
Between 2010 and 2020, the surname Mcclamroch went from 201 recorded bearers to 236. That is an increase of 35 (+17.4%). In the national ranking it rose from #91,625 to #85,336.
What does the Census say about the background of Mcclamroch?
Among Census respondents with the surname Mcclamroch, the largest self-reported group is White at 97.9%. The next largest groups are Hispanic (1.7%) and Two or More Races (0.4%). 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 Mcclamroch in the 2020 Census, accounting for 97.9% (231 people in the source table).
What is the full ancestry breakdown?
Mcclamroch appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (97.9%), Hispanic (1.7%), Two or More Races (0.4%). 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 Mcclamroch (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 Mcclamroch mean?
A surname of uncertain origin, perhaps from a Scottish place name or dialect term. 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 Mcclamroch (0.08 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 are called Mcclamroch?
Find out how many people have the last name Mcclamroch on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.