# Duplessis (surname)

Source: https://namelineage.com/surname/duplessis/  
Publisher: Name Lineage. Counts from the US Census Bureau; origin and etymology from Wiktionary; bearers from Wikidata. Data updated 2026-11-11.

A surname from French

| Field | Value |
|---|---|
| Origin | French |
| Type | not recorded |
| People in the US (2010 Census) | 3,044 |
| US rank (2010) | 10,536 of 162,253 |
| How often | about 1 in every 101,428 people |
| Change since 2000 | +14% (2,662 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | Deplessis, Leplessis, Plessis |

## Etymology

From French Duplessis.

## Who carries it

Share of people named Duplessis in the 2010 US Census by the Census's own race and ethnicity groups. The Census suppresses a share when the count behind it is small.

| Group | Share |
|---|---|
| White (not Hispanic) | 57% |
| Black (not Hispanic) | 36% |
| Hispanic or Latino (any race) | 4.1% |
| Asian and Pacific Islander | 0.4% |
| American Indian and Alaska Native | 0.4% |
| Two or more races | 2.0% |

## Where

Wikidata records people named Duplessis in France.

## People named Duplessis

- Marie Duplessis, 19th-century French courtesan

## Similar surnames

Davalos, Defelice, DeFalco, Debellis, DiBlasi, Deblois.

## How to read these numbers

A Census count is people alive and counted in 2010, not births, and names occurring fewer than 100 times are not published at all. Ethnicity shares are the Census's own categories.