2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Lamack
An English surname derived from a Middle English word meaning "lacquer" or "varnish".
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Lamack. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Lamack 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Lamack in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Lamack, the largest self-reported group is White at 96.5%. The next largest groups are Two or More Races (1.7%) and Asian/Pacific Islander (0.9%).
Origin
Meaning and origin of Lamack
The surname Lamack is believed to have originated in England during the medieval period. It is thought to be derived from the Old English words "lam" meaning "muddy" and "ac" meaning "oak tree," suggesting the name may have initially referred to someone living near a muddy oak tree or in an area with such trees.
One of the earliest recorded instances of the name can be found in the Pipe Rolls of Gloucestershire from 1195, where a William de Lamacc is mentioned. This spelling variation indicates the name's roots in the region.
In the 13th century, the name appeared in various forms such as Lamacke, Lammacke, and Lammak in records from counties like Somerset, Oxfordshire, and Warwickshire. These records often referred to landowners or local officials, indicating the name held some status at the time.
The Domesday Book, a manuscript dating back to 1086, does not appear to contain any direct references to the Lamack surname. However, it does mention several place names that may have influenced the name's development, such as Lamborne in Berkshire and Lambourn in Essex.
One notable historical figure with the surname Lamack was Sir John Lamack (1522-1586), a English soldier and military commander who served under Queen Elizabeth I during the Anglo-Spanish War. He is known for his role in the capture of the Spanish settlement of San Agustín in Florida in 1586.
Another individual of note was Richard Lamack (1670-1744), a prominent merchant and landowner from Gloucestershire. He is recorded as having owned substantial properties in the region during the early 18th century.
In the literary realm, the name appears in the works of the 16th-century writer and poet John Lyly, who mentioned a character named "Mistress Lamack" in his play "Endymion, the Man in the Moon."
Mary Lamack (1815-1892), a writer and educator from Yorkshire, authored several books on etiquette and social conduct in the Victorian era, contributing to the cultural discourse of her time.
Finally, William Lamack (1876-1951), a British architect, gained recognition for his designs of several notable buildings in London, including the Finsbury Health Centre and the former premises of the National Maritime Museum.
Demographics
Ancestry and ethnicity for Lamack
Among Census respondents with the surname Lamack, the largest self-reported group is White at 96.5%. The next largest groups are Two or More Races (1.7%) and Asian/Pacific Islander (0.9%).
The bar chart below shows how Lamack 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 Lamack surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.5% · 111
- Two or more races1.7% · 2
- Asian and Pacific Islander0.9% · 1
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Lamack
Lamack 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
#134,712
National surname rank
Recorded bearers 125
+12 bearers (+10.6%)
Per 100,000 0.04
Rank movement Up 2,071 places
2020
#145,757
National surname rank
Recorded bearers 115
-10 bearers (-8.0%)
Per 100,000 0.04
Rank movement Down 11,045 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #134,712 | 125 | 0.04 | +12 bearers (+10.6%) | Up 2,071 places |
| 2020 | #145,757 | 115 | 0.04 | -10 bearers (-8.0%) | Down 11,045 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 Lamack 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 | #134,712 | #145,757 | -8.2% |
| Count | 125 | 115 | -8.0% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Lamack bearers went from 125 to 115 (-8.0% change). The surname moved down 11,045 positions in the national ranking, going from #134,712 to #145,757.
FAQ
Lamack surname: questions and answers
How many people in the U.S. have the surname Lamack?
Name Census estimates that about 132 living Americans carry the surname Lamack. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Lamack?
Lamack ranks #145,757 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 115 people with the surname Lamack. That is different from the site's living-bearer estimate (132), 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 Lamack.
Has Lamack become more or less common over time?
Between 2010 and 2020, the surname Lamack went from 125 recorded bearers to 115. That is a decrease of 10 (-8.0%). In the national ranking it fell from #134,712 to #145,757.
What does the Census say about the background of Lamack?
Among Census respondents with the surname Lamack, the largest self-reported group is White at 96.5%. The next largest groups are Two or More Races (1.7%) and Asian/Pacific Islander (0.9%). 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 Lamack in the 2020 Census, accounting for 96.5% (111 people in the source table).
What is the full ancestry breakdown?
Lamack appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.5%), Two or More Races (1.7%), Asian/Pacific Islander (0.9%). 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 Lamack (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 Lamack mean?
An English surname derived from a Middle English word meaning "lacquer" or "varnish". 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 Lamack (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 are called Lamack?
See how common the surname Lamack is on HowManyOfMe.org, our sister site built around that single question.