2000
#14,243
National surname rank
Recorded bearers 1,933
First available Census row
Per 100,000 0.72
Rare Last name
Lamarche
A French topographic surname indicating someone who lived near a boundary or frontier.
According to the 2020 US Census Bureau surname tables, roughly 2,338 Americans carry the last name Lamarche. That puts it at #14,136 in the national surname ranking, appearing at a frequency of 0.68 per 100,000 people (about 1 in 146,602 residents).
This page is the full Name Census profile for the Lamarche 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
2.3K
1 in 146,602
Census rank
#14,136
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.0K
rare in the US
Popularity narrative
The Census Bureau recorded 2,039 bearers of the surname Lamarche in its 2020 decennial surname file. At a rate of 0.68 per 100,000 residents, it holds the 14136th position in the national surname ranking.
Among Census respondents with the surname Lamarche, the largest self-reported group is White at 83.7%. The next largest groups are Hispanic (12.1%) and Two or More Races (2.6%).
Origin
Meaning and origin of Lamarche
The surname LAMARCHE is of French origin and can be traced back to the 12th century. It is derived from the Old French words "la" meaning "the" and "marche" meaning "boundary" or "frontier." This suggests that the name was initially given to someone who lived near a border or frontier area.
LAMARCHE is most commonly associated with the Normandy region of northern France, where the earliest recorded instances of the name appear in medieval documents and records. One of the earliest known bearers of the name was Geoffroy de la Marche, a Norman knight who fought in the First Crusade in the late 11th century.
In the 13th century, the name LAMARCHE appears in the Cartulaire de Lyre, a collection of medieval charters and deeds from the abbey of Lyre in Normandy. This suggests that the name was well-established in the region by this time.
During the Middle Ages, the LAMARCHE name was also found in other parts of France, including the provinces of Poitou and Anjou. It is likely that the name spread to these areas through migrations and the establishment of new branches of the family.
One notable bearer of the LAMARCHE name was Jean de la Marche, a 15th-century French poet and chronicler who served at the court of Philip the Good, Duke of Burgundy. Jean de la Marche was born around 1390 and is known for his works such as "Le Traité des gages de bataille" and "Les Mémoires sur la vie de Philippe le Bon."
Another historical figure with the surname LAMARCHE was Olivier de la Marche, a 15th-century Burgundian nobleman and writer who served as a courtier and diplomat under Charles the Bold, Duke of Burgundy. Olivier de la Marche was born around 1425 and is best known for his memoirs, which provide valuable insights into the life and culture of the Burgundian court.
In the 16th century, the LAMARCHE name appears in records from the city of Paris, where it was borne by several families of the bourgeoisie and minor nobility. One notable Parisian bearer of the name was Jacques de la Marche, a 16th-century lawyer and legal scholar who authored several influential works on French law.
The LAMARCHE name has also been associated with various places and localities throughout France, including the commune of La Marche in the department of Vienne, and the village of Lamarche in the department of Vosges.
Demographics
Ancestry and ethnicity for Lamarche
Among Census respondents with the surname Lamarche, the largest self-reported group is White at 83.7%. The next largest groups are Hispanic (12.1%) and Two or More Races (2.6%).
The bar chart below shows how Lamarche 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 Lamarche surname at the time of the 2020 Census, not any inherent property of the name itself.
- White83.7% · 1,707
- Hispanic or Latino12.1% · 247
- Two or more races2.6% · 53
- Asian and Pacific Islander0.8% · 17
- Black or African American0.5% · 10
- American Indian and Alaska Native0.2% · 5
Timeline
Historical Census data for Lamarche
Lamarche 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
#14,392
National surname rank
Recorded bearers 2,077
+144 bearers (+7.4%)
Per 100,000 0.70
Rank movement Down 149 places
2020
#14,136
National surname rank
Recorded bearers 2,039
-38 bearers (-1.8%)
Per 100,000 0.68
Rank movement Up 256 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #14,243 | 1,933 | 0.72 | First available Census row | First available Census row |
| 2010 | #14,392 | 2,077 | 0.70 | +144 bearers (+7.4%) | Down 149 places |
| 2020 | #14,136 | 2,039 | 0.68 | -38 bearers (-1.8%) | Up 256 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 Lamarche 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 | #14,392 | #14,136 | 1.8% |
| Count | 2,077 | 2,039 | -1.8% |
| Per 100K | 0.70 | 0.68 | -2.5% |
Between the 2010 and 2020 Census, the number of Lamarche bearers went from 2,077 to 2,039 (-1.8% change). The surname moved up 256 positions in the national ranking, going from #14,392 to #14,136.
Notable bearers
Famous people with the surname Lamarche
FAQ
Lamarche surname: questions and answers
How many people in the U.S. have the surname Lamarche?
Name Census estimates that about 2,338 living Americans carry the surname Lamarche. Using the current population baseline, that works out to roughly 1 in 146,602 residents.
How common is Lamarche?
Lamarche ranks #14,136 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.68 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 2,039 people with the surname Lamarche. That is different from the site's living-bearer estimate (2,338), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.68 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.68 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 Lamarche.
Has Lamarche become more or less common over time?
Between 2010 and 2020, the surname Lamarche went from 2,077 recorded bearers to 2,039. That is a decrease of 38 (-1.8%). In the national ranking it rose from #14,392 to #14,136.
What does the Census say about the background of Lamarche?
Among Census respondents with the surname Lamarche, the largest self-reported group is White at 83.7%. The next largest groups are Hispanic (12.1%) and Two or More Races (2.6%). 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 Lamarche in the 2020 Census, accounting for 83.7% (1,707 people in the source table).
What is the full ancestry breakdown?
Lamarche appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (83.7%), Hispanic (12.1%), Two or More Races (2.6%). 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 Lamarche (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 Lamarche mean?
A French topographic surname indicating someone who lived near a boundary or frontier. 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 Lamarche (0.68 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 common is the surname Lamarche?
Find out how many people have the last name Lamarche on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.