# DeLacy (surname)

Source: https://namelineage.com/surname/delacy/  
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 Norman.

| Field | Value |
|---|---|
| Origin | Norman |
| Type | place, taken from where an ancestor lived or came from |
| People in the US (2010 Census) | 573 |
| US rank (2010) | 38,582 of 162,253 |
| How often | about 1 in every 538,823 people |
| Change since 2000 | -2.6% (588 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Etymology

Habitational surname of Norman origin, from the village of Lassy, Calvados, in Normandy.

## Who carries it

Share of people named DeLacy 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) | 82% |
| Black (not Hispanic) | 9.4% |
| Hispanic or Latino (any race) | 3.8% |
| Asian and Pacific Islander | 3.0% |

## Where

Wikidata records people named DeLacy in Principality of Wales, Earldom of Ulster and the United Kingdom of Great Britain and Ireland.

## People named DeLacy

- Alice de Lacy, 3rd Countess of Lincoln, 4th Countess of Lincoln; born in Wales
- Hugh de Lacy, 1st Earl of Ulster, (1176-1242)
- Hugh de Lacy, Lord of Meath, anglo-Norman landowner and royal office holder

## Similar surnames

Deluca, Deloach, Delk, Delucia, Delahoussaye, Dulac, Dallas, Dills, Dahlke, Dalessio, Dolce, Doles.

## 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.