2000
#14,799
National surname rank
Recorded bearers 1,840
First available Census row
Per 100,000 0.68
Rare Last name
Delorme
French topographic surname referring to someone living near an elm tree or grove.
According to the 2020 US Census Bureau surname tables, roughly 2,125 Americans carry the last name Delorme. That puts it at #15,248 in the national surname ranking, appearing at a frequency of 0.62 per 100,000 people (about 1 in 161,296 residents).
This page is the full Name Census profile for the Delorme 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
2.1K
1 in 161,296
Census rank
#15,248
2020 decennial data
Per 100,000
0.6
Frequency rate
Recorded bearers
1.9K
rare in the US
Popularity narrative
The Census Bureau recorded 1,853 bearers of the surname Delorme in its 2020 decennial surname file. At a rate of 0.62 per 100,000 residents, it holds the 15248th position in the national surname ranking.
Among Census respondents with the surname Delorme, the largest self-reported group is White at 70.8%. The next largest groups are American Indian/Alaska Native (14.1%) and Two or More Races (6.0%).
Origin
Meaning and origin of Delorme
The surname DELORME originated in France during the late medieval period. It is derived from the Old French words "de" meaning "of" and "l'orme" meaning "the elm tree". This suggests the name may have initially referred to someone who lived near an elm tree or in an area known for its elm trees.
One of the earliest recorded instances of the DELORME surname can be found in the Domesday Book, a manuscript record of landholders in England compiled in 1086 under the orders of William the Conqueror. The name appears as "de la Orme", which aligns with the Old French origin.
In the 13th century, records show a nobleman named Geoffroi DELORME who held lands in the region of Normandy, France. He was born around 1220 and was known for his involvement in the Seventh Crusade.
During the Renaissance period, a notable figure with the DELORME surname was Philibert DELORME (1510-1570), a French architect and writer who is considered one of the initiators of the French Renaissance architectural movement.
In the 17th century, a French Jesuit priest and mathematician named Gabriel DELORME (1617-1688) made significant contributions to the study of projections and cartography, developing what is known as the DELORME projection.
Another historical figure with this surname was Claude DELORME (1619-1703), a French botanist and physician who is remembered for his work on plant taxonomy and his contributions to the development of modern horticulture.
Throughout history, variations of the DELORME surname have included spellings such as De L'Orme, DeLorme, and DeL'Orme, often reflecting the regional dialects and spelling conventions of different areas of France.
Demographics
Ancestry and ethnicity for Delorme
Among Census respondents with the surname Delorme, the largest self-reported group is White at 70.8%. The next largest groups are American Indian/Alaska Native (14.1%) and Two or More Races (6.0%).
The bar chart below shows how Delorme 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 Delorme surname at the time of the 2020 Census, not any inherent property of the name itself.
- White70.8% · 1,312
- American Indian and Alaska Native14.1% · 261
- Two or more races6.0% · 112
- Black or African American5.5% · 102
- Hispanic or Latino2.7% · 50
- Asian and Pacific Islander0.9% · 16
Timeline
Historical Census data for Delorme
Delorme 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
#15,002
National surname rank
Recorded bearers 1,969
+129 bearers (+7.0%)
Per 100,000 0.67
Rank movement Down 203 places
2020
#15,248
National surname rank
Recorded bearers 1,853
-116 bearers (-5.9%)
Per 100,000 0.62
Rank movement Down 246 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #14,799 | 1,840 | 0.68 | First available Census row | First available Census row |
| 2010 | #15,002 | 1,969 | 0.67 | +129 bearers (+7.0%) | Down 203 places |
| 2020 | #15,248 | 1,853 | 0.62 | -116 bearers (-5.9%) | Down 246 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 Delorme 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 | #15,002 | #15,248 | -1.6% |
| Count | 1,969 | 1,853 | -5.9% |
| Per 100K | 0.67 | 0.62 | -7.5% |
Between the 2010 and 2020 Census, the number of Delorme bearers went from 1,969 to 1,853 (-5.9% change). The surname moved down 246 positions in the national ranking, going from #15,002 to #15,248.
FAQ
Delorme surname: questions and answers
How many people in the U.S. have the surname Delorme?
Name Census estimates that about 2,125 living Americans carry the surname Delorme. Using the current population baseline, that works out to roughly 1 in 161,296 residents.
How common is Delorme?
Delorme ranks #15,248 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.62 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 1,853 people with the surname Delorme. That is different from the site's living-bearer estimate (2,125), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.62 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.62 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 Delorme.
Has Delorme become more or less common over time?
Between 2010 and 2020, the surname Delorme went from 1,969 recorded bearers to 1,853. That is a decrease of 116 (-5.9%). In the national ranking it fell from #15,002 to #15,248.
What does the Census say about the background of Delorme?
Among Census respondents with the surname Delorme, the largest self-reported group is White at 70.8%. The next largest groups are American Indian/Alaska Native (14.1%) and Two or More Races (6.0%). 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 Delorme in the 2020 Census, accounting for 70.8% (1,312 people in the source table).
What is the full ancestry breakdown?
Delorme appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (70.8%), American Indian/Alaska Native (14.1%), Two or More Races (6.0%). 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 Delorme (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 Delorme mean?
French topographic surname referring to someone living near an elm tree or grove. 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 Delorme (0.62 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 Americans have the surname Delorme?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.